CN210684945U - Rainwater collecting pool - Google Patents

Abstract

The utility model discloses a rainwater collecting pool, which comprises a waste flow pool and a module water pool, wherein a waste flow pool filter screen is arranged in the middle of the waste flow pool and divides the waste flow pool into a sewage filtering area and a settling area, wherein one end of the waste flow pool is a water inlet, and the water inlet is connected with a rainwater inlet pipe; the other end of the flow abandoning pool is a water outlet, the water outlet is connected with a water outlet pipe, the water outlet pipe is connected with a module pool, water storage lattice layers are uniformly distributed in the module pool, inspection wells communicated with the water storage lattice layers are symmetrically arranged at two ends of each water storage lattice layer, and a sewage pump is arranged at the bottom of each inspection well; one of the inspection wells is connected with a water outlet pipe, the bottom of the other inspection well is provided with a desilting pool, and the side wall of the module pool close to one end of the desilting pool is provided with an overflow port. The utility model discloses can be effectual collect, save the rainwater, collect the extensive development of utilization through the rainwater, the rainwater is stayed or is rewet the underground, has reduced the displacement, has alleviateed city flood calamity and has threatened to groundwater can be resupplied, and the water environment can be improved, and ecological environment can be restoreed.

Description

Rainwater collecting pool

Technical Field

The utility model relates to a construction method, it is specific that a rainwater collecting pit and construction method thereof mainly are applicable to residential quarter, industrial park, square and factory building region's rainwater and collect and utilize, belong to rainwater and collect and utilize technical field.

Background

Generally speaking, the traditional reinforced concrete rainwater collection tank construction process is complex, the processes are multiple (foundation pit excavation, foundation pit support, cushion layer construction, reinforcement bar binding, formwork installation, concrete pouring, maintenance, formwork removal, waterproof construction, foundation pit backfilling and the like), the construction period is long due to the limitation of the self construction process, the exposure time after the foundation pit excavation is long, the requirement on the foundation pit support is high, safety accidents such as foundation pit collapse and the like are easy to occur in the construction process, and the construction is greatly influenced by seasons and weather; the requirement of the structure and the construction process has higher requirement on the condition of a construction site, and the requirement on the bearing capacity of a foundation is higher due to higher self weight, so that uneven settlement is easy to generate, and the reinforced concrete water tank is pulled to crack and leak; the shock resistance and the crack resistance are poor, and leakage is easy to generate; once the concrete structure is damaged, the repair, reinforcement and reinforcement of the concrete structure are difficult; the waste materials cannot be recycled, so that secondary pollution is caused to the environment; the pool surface bears low load and cannot be reused; the internal structure of the concrete is thick and rough, impurities are easy to adhere to the concrete, algae and fungi are easy to breed, and the internal structure of the concrete is not beneficial to ensuring the stability of water quality.

Therefore, the key point for solving the technical problems is to develop a modular pool construction method capable of effectively collecting and storing rainwater.

Disclosure of Invention

To a great deal of defect and not enough that exist among the above-mentioned background art, the utility model discloses improve and the innovation to this, aim at provides one kind can be effectual collect the rainwater, save, collect the extensive development of utilization through the rainwater, the rainwater is stayed or is rewet the underground, has reduced the displacement, has alleviateed city flood disaster threat to groundwater can be resupplied, and the water environment can be improved, and ecological environment can be restoreed.

The utility model discloses another utility model purpose is that the input is few, has reduced the pollution to the air, has collected the rainwater and has recycled, has practiced thrift the water resource, does not occupy the land, has important environmental protection value.

In order to solve the above problems and achieve the object of the present invention, the present invention provides a rainwater collecting tank and a construction method thereof, which are realized by adopting the following design structure and the following technical scheme:

a rainwater collecting pool comprises a flow discarding pool (1) and a module water pool (2) connected with the flow discarding pool (1), wherein a flow discarding pool filter screen (11) is arranged in the middle of the flow discarding pool (1), the flow discarding pool filter screen (11) divides the flow discarding pool (1) into a sewage filtering area and a settling area, one end of the flow discarding pool (1) is provided with a water inlet, and the water inlet is connected with a rainwater inlet pipe (12); the other end of the flow abandoning pool (1) is a water outlet, the water outlet is connected with a water outlet pipe (13), the water outlet pipe (13) is connected with the module pool (2), water storage grids are uniformly distributed in the module pool (2), inspection wells (21) communicated with the water storage grids are symmetrically arranged at the two ends of each water storage grid, and a sewage pump (22) is arranged at the bottom of each inspection well (21); one of the inspection wells (21) is connected with the water outlet pipe (13), the bottom of the other inspection well (21) is provided with a sand basin (23), the side wall of the module water pool (2) close to one end of the sand basin (23) is provided with an overflow port, and the overflow port is connected with an overflow pipe (24).

Preferably, the filter screen (11) of the waste flow tank is an artificial grid.

Preferably, a cleaning outlet (14) is arranged at the top of the sewage filtering area, an inspection port (15) is arranged at the top of the settling area, and a drainage pump (16) is further arranged in the settling area.

Preferably, a reinforced concrete raft (3) is arranged at the bottom of the modular pool (2); a filter screen (25) is also arranged between the water storage grid layer and the inspection well (21), and the filter screen (25) is a stainless steel net.

Preferably, one end of the sewage pump (22) is a water inlet end, and the water inlet end is positioned at the bottom of the inspection well (21); the other end of the sewage pump (22) is a water outlet end which is connected with a sewage pipe, and the sewage pipe extends out of the inspection well (21).

Preferably, a geotextile or geomembrane (4) and a broken stone permeable layer (5) are further arranged on the periphery of the modular pool (2) from inside to outside in sequence.

Preferably, an injection molding layer, an anti-rust layer and a warning layer are sequentially sprayed on the outer surfaces of the flow discarding pool (1), the module pool (2), the flow discarding pool filter screen (11), the rainwater inlet pipe (12), the water outlet pipe (13), the flow discarding pump (16), the inspection well (21), the sewage pump (22), the sand settling pool (23) and the overflow pipe (24) from inside to outside, and fluorescent powder is coated on the warning layer.

Preferably, the injection layer is injected with a high-molecular wear-resistant material; the anti-rust layer comprises epoxy zinc-rich primer, chlorinated rubber finish paint and epoxy mica iron intermediate paint positioned between the epoxy zinc-rich primer and the chlorinated rubber finish paint; the warning layer is a yellow or black reflective warning tape or a reflective color film or reflective paint.

Compared with the prior art, the utility model produced beneficial effect is:

1. compared with the traditional reinforced concrete water pool, the water pool is assembled by adopting the plastic modules, the modules can be recycled, and a large amount of materials such as reinforcing steel bars, concrete, battens and laminates are saved;

2. the utility model can establish a rainwater sewage interception and infiltration system, a rainwater collection and utilization system and the like, and can greatly save tap water resources by using rainwater as urban miscellaneous water for spraying road surfaces, irrigating greenbelt, storing water and flushing toilets and the like;

3. the utility model adopts manual installation, the time is only 1/3 of the construction period of the traditional pool, the construction period is shortened, the input amount of construction machinery is reduced, and the energy consumption saving effect is obvious;

4. the PP module of the utility model can be repeatedly used and recycled, and the resource is recycled;

5. the utility model is of a full-buried type, and can be provided with greening, road, square, parking lot, playground, greening and other forms as required after the top is covered with soil, thus not occupying the ground space and leading the land resources to be better utilized;

6. the modular pool constructed by the utility model has the advantages of less mechanical investment, reduced air pollution, rainwater collection and reutilization, water resource saving, no land occupation and important environmental protection value;

7. the construction time of the modular rainwater collecting pool of the utility model is only 8 days, which is shortened by 15 days compared with the construction time of the traditional reinforced concrete rainwater collecting pool, and the foundation pit can be backfilled in time, thereby reducing the safety risk;

8. the utility model discloses the module pond is the rainwater utilizes some in the system, can effectually collect the rainwater, save, can alleviate the situation that present urban water resource is in short supply, is an effective way of open source throttle, is the requirement such as improvement of having comprehensively considered rainwater runoff pollution control, city flood control and ecological environment, and the rainwater of collecting is used as the technical means that sprays the road surface, irrigate urban miscellaneous water such as greenery patches, retaining flushing toilet or infiltration entering surrounding soil body and carry out the replenishment to groundwater.

Drawings

The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:

fig. 1 is one of the overall structural schematic diagrams of the present invention;

fig. 2 is a second schematic view of the overall structure of the present invention;

FIG. 3 is one of the flow charts of the construction process of the present invention;

FIG. 4 is a second block diagram of the construction process of the present invention;

table 1 is a material table of the present invention;

table 2 the mechanical equipment of the present invention is shown;

wherein, the reference numbers in the figures: 1-a flow discarding pool, 11-a flow discarding pool filter screen, 12-a rainwater inlet pipe, 13-a water outlet pipe, 14-a cleaning outlet, 15-an inspection opening, and 16-a flow discarding pump;

2-module water pool, 21-inspection well, 22-sewage pump, 23-desilting pool, and 24-overflow pipe;

3-reinforced concrete raft;

4-geotextile or geomembrane;

5, a broken stone permeable layer;

s1, construction preparation;

s2, excavating foundation pit earthwork and supporting the foundation pit;

s3, checking and accepting the foundation pit;

s4, pouring cushion layer concrete;

s5, installing the flow discarding pool, the raft, the sand basin steel bars and the templates;

s6, pouring concrete in the abandoning basin, the raft and the desilting basin;

s7, laying bottom plate geotextile;

s8-assembling PP module units;

s9, wrapping the module water pool with geotextile;

s10, the flow discarding pool is communicated with the module pool;

s11, communicating the module water pool with a municipal pipe network;

s12, mounting a filter screen;

s13, installing a discharge pump and a sewage pump;

s14, backfilling a foundation pit;

s15 — periodic check.

Detailed Description

In order to make the technical means, the inventive features, the purpose of achieving the goal and the efficacy easy to understand, the technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description, it should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict, and the present invention will be described in detail with reference to the drawings and with reference to the embodiments.

The rainwater collection pool comprises a discarding pool 1 and a module pool 2 connected with the discarding pool 1, wherein a discarding pool filter screen 11 is arranged in the middle of the discarding pool 2, the discarding pool filter screen 11 divides the discarding pool 1 into a dirt filtering area and a settling area, one end of the discarding pool 1 is provided with a water inlet, and the water inlet is connected with a rainwater inlet pipe 12; the other end of the flow abandoning pool 1 is a water outlet, the water outlet is connected with a water outlet pipe 13, the water outlet pipe 13 is connected with a module pool 2, water storage lattices are uniformly distributed in the module pool 2, inspection wells 21 communicated with the water storage lattices are symmetrically arranged at the two ends of each water storage lattice, and a sewage pump 22 is arranged at the bottom of each inspection well 21; one of the inspection wells 21 is connected with the water outlet pipe 13, the bottom of the other inspection well 21 is provided with a desilting pool 23, the side wall of the module water pool 2 close to one end of the desilting pool 23 is provided with an overflow port, and the overflow port is connected with an overflow pipe 24.

Further, the filter screen 11 of the flow discarding pool is an artificial grid.

Further, a cleaning outlet 14 is arranged at the top of the sewage filtering area, an inspection opening 15 is arranged at the top of the settling area, and a discharge pump 16 is further arranged in the settling area.

Further, a reinforced concrete raft 3 is arranged at the bottom of the module water pool 2; a filter screen 25 is also arranged between the water storage grid layer and the inspection well 21, and the filter screen 25 is a stainless steel net.

Furthermore, one end of the sewage pump 22 is a water inlet end, and the water inlet end is positioned at the bottom of the inspection well 21; the other end of the sewage pump 22 is a water outlet end which is connected with a sewage pipe, and the sewage pipe extends out of the inspection well 21.

Furthermore, a geotextile or a geomembrane 4 and a gravel permeable layer 5 are sequentially arranged on the periphery of the modular pool 2 from inside to outside.

Further, an injection molding layer, an anti-rust layer and a warning layer are sequentially sprayed on the outer surfaces of the flow discarding pool 1, the module water pool 2, the flow discarding pool filter screen 11, the rainwater inlet pipe 12, the water outlet pipe 13, the flow discarding pump 16, the inspection well 21, the sewage pump 22, the sand settling pool 23 and the overflow pipe 24 from inside to outside, and fluorescent powder is coated on the warning layer.

Specifically, a high-molecular wear-resistant material is injected on the injection molding layer; the anti-rust layer comprises epoxy zinc-rich primer, chlorinated rubber finish paint and epoxy mica iron intermediate paint positioned between the epoxy zinc-rich primer and the chlorinated rubber finish paint; the warning layer is a yellow or black reflective warning tape or a reflective color film or reflective paint.

The rainwater collecting pool and the construction method thereof as shown in the attached figures 3 to 4 of the specification comprise the following construction steps:

s1, construction preparation;

s2, excavating foundation pit earthwork and supporting the foundation pit;

s3, checking and accepting the foundation pit;

s4, pouring cushion layer concrete;

s5, installing the abandoning basin, the raft, the sand basin steel bars and the templates;

s6, pouring concrete in the abandoning basin, the raft and the desilting basin;

s7, laying the bottom plate geotextile;

s8, assembling PP module units;

s9, wrapping the module water pool with geotextile;

s10, the flow discarding pool is communicated with the module water pool;

s11, communicating the module water pool with a municipal pipe network;

s12, mounting a filter screen;

s13, installing a discharge pump and a sewage pump;

s14, backfilling a foundation pit;

s15, check periodically.

Further, in S2, the constructor performs excavation of the foundation pit, the width and length of the excavation of the foundation pit are determined according to the design, the excavation depth of the foundation pit is 5m to 5.5m, the foundation pit is supported after the excavation of the foundation pit is completed, and the periphery and the top of the foundation pit are covered after the support of the foundation pit is completed;

and in S4, pouring a C15 concrete cushion layer with the thickness of 100mm in a mode of adjusting and transporting by using an automobile pump or a tower crane according to actual conditions after the groove cleaning of the foundation pit is finished.

Further, in S5, the abandoning pool is a reinforced concrete pool, positioning and paying-off are carried out according to construction drawings during construction, reinforcing steel bars are bound according to the construction drawings, concrete is poured after relevant hole formwork supporting is reserved, and after formwork removal is completed during maintenance of the abandoning pool, an artificial grid is installed in the middle of the abandoning pool;

the reinforced concrete raft plates are used for finding a slope towards the desilting basin during pouring, so that a small amount of unfiltered sediment flows into the desilting basin along the slope after sinking into the bottom of the basin;

in the S7, after the geotextile is conveyed to the site, manual rolling and paving are adopted, after the geotextile is laid, the geotextile is checked to see whether the damaged part exists, if the damaged part exists, the geotextile needs to be repaired, and three sides of the geotextile are hung by soft ropes so as to facilitate the carrying and stacking of the modules.

Further, in the step S8, a plurality of PP module units are assembled into a module water pool, the assembly height of the module water pool is 1-3 m, and the top earthing thickness is not more than 2 m;

wherein, the module pond is by the cross buckle, the butterfly buckle, the module is constituteed, require during the installation to connect four module angles with the butterfly buckle in the module bottom, from the second floor up, the cross card is connected for the module four corners, require every layer of module about, around, the left and right sides direction all will be unanimous, upper and lower module strong point aligns, the butterfly buckle is used to the top layer, and it is fixed with the ribbon between two modules of marginal portion, the starting point of installation module is from a corner location of foundation ditch, begin to put things in good order with L type extension, the module long direction keeps unanimous with the pond short direction.

Further, in S9, after the whole module water tank is installed, the module water tank is wrapped with geotextile, folds of the geotextile should be reduced as much as possible in the wrapping process, the geotextile at the four corners of the module water tank should be pulled to the upper end of the module water tank, the geotextile at the four walls should be pulled to the upper end of the module water tank after being laid, whether the geotextile at the periphery is damaged is checked, and the damaged part is repaired;

in the step S10, rainwater is firstly collected into a flow discarding pool through an outdoor rainwater pipe network, filtered in the initial stage and then discharged into a module water pool through a water outlet pipe;

in the step S11, after the module water tank is filled with water, the redundant rainwater is discharged into a municipal pipe network through an overflow pipe arranged at the downstream of the flow discarding tank;

abandon and flow pond and the inside inspection shaft intercommunication of module pond, module pond and municipal pipe network intercommunication all adopt the bellows, set up the drainage slope of certain tendency during the connection, guarantee that the rainwater drains into the module pond smoothly and overflow goes into municipal pipe network.

The utility model discloses in, be provided with the sealed pad of stagnant water between two adjacent PP modular unit, the sealed pad of stagnant water is the rubber sealing pad, and this rubber sealing pad is sealed to be set up in two PP modular unit's interconnect department.

Further, in S12, a filter screen is installed on the inner wall of the inspection well inside the module water pool to filter the rainwater for the second time;

in the step S13, a drainage pump is installed in the drainage pool, and if the rainwater quantity is too large and cannot be drained into the module pool from the drainage pool in time, the drainage pump is started to drain the rainwater to a nearby rainwater well and the rainwater is converged into a downstream rainwater pipe network to be drained away;

arranging a sewage pump in the module pool inspection well to pump and discharge silt left after filtering by a filter screen to a nearest sewage well; and pumping a small amount of unfiltered sediment which flows into the sediment tank along the gradient of the bottom plate after sinking to the bottom of the tank, so as to prevent the sediment from accumulating inside the module water tank.

Furthermore, in the step S14, when the foundation pit is backfilled, the module water tank is not damaged, broken stones with the particle size not greater than 30mm are backfilled within the range of 20cm close to the module water tank to protect the broken stones and facilitate the penetration of rainwater in the tank to surrounding soil bodies; tamping the backfill of the first layer once when the backfill is 50cm high, tamping the backfill once every 20cm, tamping the backfill to the top of the module water pool, and tamping by adopting a small machine, wherein the backfilling compactness of the peripheral groove of the module is 0.9, the compactness of the top of the module is 0.85 within 0.5m, and the compactness of the top of the module above 0.5m is 0.8;

in the step S15, after the foundation pit is backfilled, the structure and the equipment such as the drainage pool, the module pool, the rainwater inlet pipe, the rainwater outlet pipe, the overflow pump, and the sewage pump are regularly and comprehensively inspected during the use process, so as to repair the damaged and failed parts in time and ensure the normal operation of the whole rainwater collection system.

Examples

The construction method is suitable for collecting and utilizing the rainwater in residential districts, industrial parks, squares and factory building areas.

Firstly, preparation of construction

1. Necessary construction preparation is required before construction, constructors need to be familiar with drawings carefully before construction, the position of a water pool is accurately positioned, and preparation of devices such as a foundation pit excavation line, an excavator, a muck truck and the like and materials such as a PP module and the like is finished;

2. according to a geological survey report, surveying a construction site in detail, and familiarizing peripheral underground pipe ditches and adjacent buildings;

3. the site enclosure and the drainage ditches on the two sides of the road in the construction site are arranged, so that water is not accumulated in the site, and the smoothness of the construction machinery road is ensured. Before construction, hydropower and temporary living facilities are installed as required.

4. The contents of the design data and the bidding documents are comprehensively checked on site and subjected to construction investigation, particularly the data related to roadbed construction, such as the quantity of earthwork, traffic, vegetation, building and facility removal, geological measurement and the like;

4. the filling material of the pool dike is subjected to reexamination and sampling tests, the maximum dry density, the optimal water content, the liquid limit, the plasticity index or particle analysis, the filling material strength and the like of the filling material are measured, and the tests are processed according to the building construction safety inspection grade standard (G59-2011) and the construction temporary electricity utilization safety technical specification (J46-2011).

Second, excavation of foundation pit earthwork and foundation pit support

In the step S2, constructors perform foundation pit earthwork excavation, the width and the length of the foundation pit excavation are determined according to the design, the assembly height of the module water pool is 1 m-3 m, the top earthing thickness is different according to different bearing specifications of the PP module, but the thickest thickness is not more than 2m, so the excavation depth of the foundation pit is generally 5 m-5.5 m;

supporting measures are needed to be taken for the foundation pit, in order to ensure the stability and safety of the foundation pit, a construction scheme is compiled according to design requirements with clear requirements on a design drawing to support the foundation pit, the design drawing does not have clear requirements on the foundation pit with the excavation depth of more than 3m (including 3m) and the foundation pit with the excavation depth of not more than 3m, but geological conditions, surrounding environment and underground pipelines are complex, or a special construction scheme needs to be compiled for the foundation pit which affects the safety of adjacent buildings and structures, safe and reliable foundation pit supporting measures are formulated, and the supporting is carried out according to the special construction scheme after approval; for a foundation pit with the excavation depth of more than 5m (including 5m), the foundation pit belongs to a subsection project with larger risk of more than a certain scale, and a special construction scheme can be implemented after expert demonstration;

the top and the periphery are covered after the foundation pit supporting is finished, so that the foundation pit is prevented from being washed by surface water and rainwater, and the safety of operating personnel in the foundation pit is ensured.

Acceptance inspection of foundation pit

In the step S3, a chief engineer organizes a conference, and units such as a main body of five construction parties (construction, design, geological survey and supervision) perform groove inspection together, and the position, the size and the groove bottom depth of the excavation plane of the foundation groove are inspected according to a design drawing; checking whether the design drawing conforms to the excavation depth, whether the excavation depth conforms to the design requirement and the like.

Fourthly, pouring cushion layer concrete

And in S4, pouring a C15 concrete cushion layer with the thickness of 100mm in a mode of adjusting and transporting by using an automobile pump or a tower crane according to actual conditions after the groove cleaning of the foundation pit is finished.

Fifthly, mounting the abandoning basin, the raft, the steel bars of the desilting basin and the templates

In the step S5, the abandoning pool is a reinforced concrete pool, positioning and paying-off are carried out according to construction drawings during construction, reinforcing steel bars are bound according to the construction drawings, relevant holes are reserved for formwork support, concrete is poured, and after maintenance of the abandoning pool is completed, an artificial grid is installed in the middle of the abandoning pool.

Sixthly, pouring concrete of the abandon flow pool, the raft plate and the desilting pool

In S6, the bearing capacity per se can meet the requirements for better geological conditions, and the bearing requirements can be met only by pouring a C15 plain concrete plate with the thickness of 100mm for leveling a foundation pit with the pool assembly height below 1.5 m. For a foundation pit with insufficient self bearing capacity and a bearing capacity characteristic value below 160Kpa, pouring a C15 concrete cushion layer with the thickness of 100mm after groove cleaning of the foundation pit is completed, binding (three-level steel) phi 12@300 double-layer bidirectional reinforcing steel bars on the cushion layer, and then pouring a C25 reinforced concrete raft plate with the thickness of 300mm so as to improve the bearing capacity of the base and prevent the modular pool from generating uneven settlement in the use process;

the reinforced concrete raft plates find a slope towards the desilting basin when being poured, so that a small amount of unfiltered sediment flows into the desilting well along the slope after sinking into the bottom of the basin.

Seven, bottom plate geotextile laying

In the S7, the bottom plate is paved with geotextile, which is one of important components of the pool body, and the integrity of the geotextile should be protected during construction to avoid abrasion and damage. Strict requirements are imposed on the surrounding environment, dregs, sharp objects, stones, iron wires and the like need to be cleaned for a coarse sand layer, the bottom groove is thoroughly cleaned, and the geotechnical cloth is not damaged.

After the geotextile is transported to the site, manual rolling and paving are adopted. After the laying is finished, the geotextile is checked to see whether the damaged part is damaged or not, and if the damaged part is damaged, the geotextile is repaired. The geotextile can be hung on three sides by the soft rope, so that the module can be conveniently carried and stacked.

The module pond is divided into water storage formula module pond and infiltration formula module pond according to the difference of retaining mode, and is better to geological conditions itself, and soil permeability coefficient is lower or groundwater level is higher itself and has surpassed the effective depth of water in module pond, can not satisfy the infiltration requirement, adopts water storage formula module pond, and at this moment, the main function in module pond is to carry out the rainwater regulation and storage, and the wrong peak is discharged, alleviates municipal drainage pipe network load, reduces urban waterlogging's probability. When the water storage type module pool is adopted, the impermeable composite geomembrane is laid at the bottom. When the permeable module water tank is adopted, the preferential infiltration is considered, and the geotextile with better water permeability is laid at the bottom.

Eight, PP modular unit assembly

And in the S8, the module water pool is composed of a cross buckle, a butterfly buckle and a module. During installation, the bottom of the module is required to be connected with four module corners by butterfly buckles, and the module corners are connected by cross-shaped cards from the second layer upwards. The upper layer module, the lower layer module, the front layer module, the rear layer module and the left layer module are required to be consistent in vertical, front-back and left-right directions, supporting points of the upper layer module and the lower layer module are required to be aligned, the uppermost layer module is fastened by a butterfly buckle and is fixed between the two modules at the edge part by a binding tape, the starting point of the installation module is positioned from one corner of a foundation pit and starts to be stacked in an L-shaped extension mode, the length direction of the module is consistent with the short direction of a pool, a water inlet well and a water outlet well are arranged simultaneously according to requirements when the first. When the circular water inlet and outlet well is installed, a square stable support is installed at the joint of the two layers of modules, and each layer of connection is installed, so that the water inlet and outlet well can tightly depend on the walls of the modules.

Nine, geotechnical cloth wrapping module pool

In the step S9, after the whole tank body is installed, the tank body needs to be wrapped by geotextile, folds of the geotextile should be reduced as much as possible in the wrapping process, the geotextile at four corners of the tank body needs to be pulled to the upper end of the tank body, the geotextile at four walls needs to be pulled to the upper end of the tank body after being laid, whether the geotextile at the periphery is damaged is checked, and the damaged part needs to be repaired when the damaged part is found;

when the water storage type module water tank is adopted, the bottom, the side face and the top face are wrapped with the impermeable composite geomembrane, and the lap joint position of the geomembrane is in hot melt connection and cannot leak water. When the permeable module water tank is adopted, geotextiles with better water permeability are wrapped, and a geotextile sewing machine is adopted for sewing the geotextiles, and the geotextiles are fixed on the module by a binding belt.

Ten, abandon a class pond and module pond intercommunication

In S10, the rainwater is collected into the flow discarding pool through the outdoor rainwater pipe network, and is discharged into the module pool after initial filtering.

Eleven, the module water pool is communicated with a municipal pipe network

In the step S11, after the module water tank is filled with water, the redundant rainwater is discharged into a municipal pipe network through an overflow pipe arranged at the downstream of the flow discarding tank;

abandon and flow pond and the inside inspection shaft intercommunication of module pond, module pond and municipal pipe network intercommunication all adopt the bellows, set up the drainage slope of certain tendency during the connection, guarantee that the rainwater drains into the module pond smoothly and overflow goes into municipal pipe network.

Twelve, installation of filter screen

And in the S12, a filter screen is arranged on the inner wall of the inspection well in the module water tank to filter rainwater for the second time, so that the water discharged into the tank body of the module water tank is further purified.

Thirteen, abandon the stream pump and dredge pump installation

In the step S13, a drainage pump is installed in the drainage pool, and if the rainwater flow is too large and cannot be drained into the module pool from the drainage pool in time, the drainage pump is started to drain the rainwater to a nearby rainwater well and the rainwater is collected into a downstream rainwater pipe network to be drained away;

arranging a sewage pump in the module pool inspection well to pump and discharge silt left after filtering by a filter screen to a nearest sewage well; and pumping and discharging a small amount of unfiltered silt which flows into the sediment trap along the gradient of the bottom plate after sinking to the bottom of the tank, so as to prevent the silt from accumulating inside the tank body of the module water tank.

Fourteen, backfilling foundation pit

In the S14, in order to ensure that the pool body is not damaged when the foundation pit is backfilled, broken stones with the particle size not larger than 30mm are backfilled within a range of 20cm close to the pool body to protect the pool body and facilitate the penetration of rainwater in the pool to the surrounding soil body. Besides meeting the requirement of conventional foundation pit backfilling, the backfilling soil needs to be considered in the aspects of not doping large and hard stones, humus and clay with a small infiltration coefficient. During backfilling, according to design requirements, backfilling within a range of 0.5m above the top of the module is required to be backfilled manually, and mechanical bulldozing is strictly forbidden. Manually backfilling the part close to the tank body at the periphery, gradually tamping, tamping the backfill soil of the first layer once when the height of the backfill soil is 50cm, tamping the backfill soil to the top of the tank body once every 20cm, tamping the backfill soil by adopting a small machine, and carefully tamping the part close to the tank body. The optimum compactness of the backfilling groove at the periphery of the module is 0.9, the compactness of the top of the module is 0.85 within 0.5m, and the compactness of the top of the module above 0.5m is 0.8.

Fifteen, regular inspection

In the step S15, after the foundation pit is backfilled, the structure and the equipment such as the drainage pool, the module pool, the rainwater inlet pipe, the rainwater outlet pipe, the overflow pump, and the sewage pump are regularly and comprehensively inspected during the use process, so as to repair the damaged and failed parts in time and ensure the normal operation of the whole rainwater collection system.

Sixthly, the process flow

The construction process flow chart is shown in fig. 3 and 4.

Seventeen, materials and equipment

The utility model discloses a material table is shown as table 1, and this table 1 is the utility model discloses a main material table.

The utility model discloses a mechanical equipment table is shown as table 2, and this table 2 does the utility model discloses a to construct mechanical equipment configuration table.

Eighteen quality assurance measures

1. Quality control standard

Building construction safety inspection scoring standard GJG 59-2011.

Technical Specification for temporary construction electricity utilization JGJ 46-2011.

2. The quality control points

(1) When the finished module enters the field, the finished module needs to be checked and accepted, certificates such as quality certificates need to be provided, the inner surface and the outer surface of the module need to be clean and smooth, and the defects of air bubbles, obvious scratches, impurities and the like are not allowed. The product has the advantages of complete appearance, no crack loss and no delamination, the position of the pouring gate does not influence the balanced placement of the board surface, and the edge position of the module has no burr.

(2) PP module assembly has higher requirement on the flatness of a foundation pit, and the buckle connection between the basic uneven modules is not tight, so that the requirement on the operation level of a foundation pit digging manipulator is higher, and the equipped excavation guiding personnel and a mechanical manipulator must be tightly matched, so that the grooving efficiency, safety and excavation quality are ensured.

(3) The excavation construction is operated in the daytime as far as possible, the visual monitoring control on the conditions of the stratum of the groove section, the side wall, the bedrock seepage and the like is convenient, constructors must operate by a station, and the safety and the rapidity of the construction are guaranteed. If night shift work is required, a sufficient number of lighting devices must be equipped.

(4) In order to ensure that the pool body modules are installed smoothly, the width of the bottom of each side is 100mm wider than that of the bottom plate concrete when a foundation pit is excavated.

(5) After finishing pouring of the raft, coarse sand must be used for leveling an uneven area, otherwise, the integrity of the module pool is influenced, and the bearing capacity of the module pool is reduced.

(6) After the assembly of the modular water tanks is finished, the side surfaces and the top of the modular water tanks need to be tightly wrapped by anti-seepage geomembranes (geotextiles), and the anti-seepage geomembranes (geotextiles) on the side walls and the anti-seepage geomembranes (geotextiles) on the bottom plates are tightly connected by adopting a hot melting connection or a geotextile sewing machine.

Nineteen safety guarantee measures

(1) The specification standards followed: construction safety inspection scoring standard GJG59-2011, construction temporary electricity safety technical Specification JGJ 46-2011;

(2) clear and safe production targets: the safety accident of human body and equipment is stopped, a regular safety inspection system is made, a safety guarantee gold system and a reward and punishment system are implemented, the problems are found, and the correction and the modification are carried out in a limited period. The standardized operation is seriously implemented, the construction labor discipline is obeyed, and the illegal command and illegal operation are practically avoided.

(3) The construction has cross operation, the use of construction equipment is more, all circuits are processed by a professional electrician, other personnel cannot connect and disconnect the power line without permission, the illumination brightness of the construction at night is required to meet the national regulations, and the illumination line is required to be frequently checked and maintained.

(4) When the machine works, the safety of people and machines must be guaranteed, road inspection, paving and equipment integral inspection are carried out in advance, the safe transfer is guaranteed, and people cannot stand in the operation range of the excavator and the loader.

(5) The foundation pit excavation will be observed and monitored the foundation pit, and to the foundation pit excavation degree of depth be greater than 3m will set up the observation point, monitor the condition such as foundation pit deformation displacement in real time, guarantee that the foundation pit is stable and constructor safety. The monitoring scheme is required to be compiled for the foundation pit with the depth of 5m or more, and the main contents of the monitoring scheme comprise engineering general description, monitoring basis, monitoring content, monitoring method, personnel and equipment, measuring point arrangement and protection, monitoring frequency, early warning standard, monitoring result report and the like.

(6) The foundation pit must be protected by facing the side, the distance from the facing side to the foundation pit side is 1.5m, the height of the protective railing is 1.2m, the protective railing is sealed by a dense vertical net, and a safety mark is arranged.

(7) And (3) arranging a water collecting pit when accumulated water exists in the foundation pit, timely pumping the accumulated water out of the construction site, sealing the top of the water collecting pit by using a laminate and arranging a safety mark.

(8) Various pits with potential safety hazards in a construction site need to be protected, backfilling can be carried out in time, accumulated water in the pits cannot be drained when backfilling is needed, and safety signs are arranged.

(9) Non-constructors in a construction site need to be dissuaded in time, and construction safety is guaranteed.

Twenty, environmental protection measures

(1) When a machine such as an excavator or a muck truck is used for foundation pit construction, the emission of dust and tail gas is noticed so as not to pollute the atmosphere.

(2) When the muck truck leaves the field from the soil source, loose soil is compacted, shaped and covered; and covering the site soil deposit points with a green dense mesh net.

(3) Various construction wastes left in a construction area are classified and recycled in time, the construction wastes are cleared and transported at any time, the wastes are forbidden to be thrown at will, and waste water and waste slurry generated in the construction process are treated in a centralized manner and then discharged.

(4) The construction road is hardened, and the construction traffic lane is sprinkled with water in sunny days, so that dust is prevented from flying to pollute the surrounding environment.

Twenty-one, benefit analysis

1. Compared with the traditional reinforced concrete water tank, the water tank is assembled by adopting the plastic modules, the modules can be recycled, and a large amount of materials such as reinforcing steel bars, concrete, battens and laminates are saved.

2. A rainwater sewage interception and infiltration system, a rainwater collection and utilization system and the like can be established, and the rainwater is used as urban miscellaneous water for spraying road surfaces, irrigating greenbelts, storing water and flushing toilets and the like, so that tap water resources can be greatly saved.

3. This module pond adopts artifical the installation, and the time only is 1/3 of traditional pond construction cycle, has shortened the time limit for a project, has reduced construction machinery's input, and the energy consumption saving effect is showing.

4. The PP module can be recycled, and resources can be recycled.

5. The module pool is of a full-buried type, forms such as greening, roads, squares, parking lots, playgrounds, greening and the like can be arranged as required after the top of the module pool is covered with soil, the space on the ground is not occupied, and land resources can be better utilized.

6. The module pool is constructed with less mechanical investment, reduces the pollution to the air, collects and recycles the rainwater, saves the water resource, does not occupy the land, and has important environmental protection value.

7. The rain water treatment system project in the Mei Kunming Huma semi-mountain district is positioned in the Kunming Luma Huma semi-mountain district in the Panlongdistrict, and the main function of the module water tank is used for storing rain water and infiltrating into surrounding soil to supplement underground water. The construction time of the module rainwater collecting pool is only 8 days, the construction time is shortened by 15 days compared with that of the traditional reinforced concrete rainwater collecting pool, the foundation pit can be backfilled in time, and the safety risk is reduced.

8. A project for improving and constructing a Kunming Yuhua district KCC2011-84 landmass shed house district comprehensively utilizes rainwater, and the main function of the module water tank is to store rainwater and permeate into surrounding soil to supplement underground water. The construction time of the module rainwater collecting pool is only 10 days, the construction time is shortened by 15 days compared with the construction time of the traditional reinforced concrete rainwater collecting pool, and because the labor cost and the mechanical cost are reduced along with the construction time, the total manufacturing cost is reduced, and good economic benefits are created.

9. A dragon bucket I No. 36 and 39 plot sewage treatment and rainwater comprehensive utilization project, the main function of the module water tank is used for storing rainwater, one part of the module water tank is collected and reused as irrigation water, and the other part of the module water tank permeates into surrounding soil to supplement underground water. And (5) beginning the construction of the rainwater collecting pool of the project module in 2017 and within 2 months, and finishing the construction within 10 days.

Twenty-two, application example

(1) The rain water treatment system project in the Mei Kunming Huma semi-mountain district is positioned in the Kunming Luma Huma semi-mountain district in the Panlongdistrict, and the main function of the module water tank is used for storing rain water and infiltrating into surrounding soil to supplement underground water. The construction time of the module rainwater collecting pool is only 8 days, the construction time is shortened by 15 days compared with that of the traditional reinforced concrete rainwater collecting pool, the foundation pit can be backfilled in time, and the safety risk is reduced.

(2) A project for improving and constructing a Kunming Yuhua district KCC2011-84 landmass shed house district comprehensively utilizes rainwater, and the main function of the module water tank is to store rainwater and permeate into surrounding soil to supplement underground water. The construction time of the module rainwater collecting pool is only 10 days, the construction time is shortened by 15 days compared with the construction time of the traditional reinforced concrete rainwater collecting pool, and because the labor cost and the mechanical cost are reduced along with the construction time, the total manufacturing cost is reduced, and good economic benefits are created.

(3) A dragon bucket I No. 36 and 39 plot sewage treatment and rainwater comprehensive utilization project, the main function of the module water tank is used for storing rainwater, one part of the module water tank is collected and reused as irrigation water, and the other part of the module water tank permeates into surrounding soil to supplement underground water. And (5) beginning the construction of the rainwater collecting pool of the project module in 2017 and within 2 months, and finishing the construction within 10 days.

To sum up, the utility model discloses advantage in particular embodiment is:

1. the utility model discloses a template pond is collected PP modular unit by a plurality of rainwater and is combined, forms an underground water storage pool, wraps up prevention of seepage geomembrane or infiltration geotechnological cloth at the pond periphery according to the engineering needs, constitutes different grade type such as cistern, infiltration pond, flood diversion pond, can replace traditional reinforced concrete rainwater collecting pit. Rainwater collects through outdoor rainwater pipe network and gets into PP module combination rainwater collecting pit front end and abandons a class pond, flow in the plastics inspection shaft that sets up in the module pond inside through the outlet pipe after filtering, inside the aperture infiltration entering around rethread inspection shaft enters into the module around, the front end is abandoned class pond and is not filtered sediment of depositing completely in the inspection shaft inside and pass through the sump pit pump drainage to sewage shaft nearby, PP module combination rainwater collecting pit is annotated after full water, municipal pipe network is arranged into through setting up the gap that abandons a class pond to unnecessary rainwater, moreover, the steam generator is simple in structure, and the use is simple and convenient.

2. The module adopts regeneration material, and material durable can adapt to various adverse circumstances, and the protection against insects is mothproof, green, and the inside water of module can keep under the optimal condition to there is sufficient aerobic activity space, prevents to produce the anaerobism bacterium that influences quality of water because of the rainwater stagnation, and does not breed ant fly and alga.

3. This rainwater catch basin adopts the combination of finished product assembled PP module to form, and the PP module is polypropylene plastic unit module, and acid and alkali resistance, ageing resistance, free from extraneous odour, the smooth fungus class that should not breed of outer wall, and the inner wall is more smooth than the concrete inner wall, and the difficult impurity that adheres to of inner structure more is favorable to guaranteeing stable quality of water.

4. The product has strong compression resistance and the whole service life can reach more than 50 years.

5. Construction simple to operate, the efficiency of construction is high, and the installation cycle is 1/3 of traditional pond construction cycle only. The construction cost is low, and the benefit is good.

6. The rainwater collecting pool can be flexibly arranged according to different terrains, can be designed into various irregular shapes and sizes according to different project characteristics, can achieve 2000m3 to the maximum extent in a single water pool, and has a wide water collecting surface.

7. The assembled water pool has good stretching property and excellent earthquake resistance.

8. The combined rainwater collecting pool is installed underground, can be arranged below greenery, roads, squares, parking lots and sports grounds as required, does not occupy the ground space, and does not influence the landscape effect.

9. Can be removed and transferred to other areas for recycling.

10 because the outer surface of the utility model or the outer surface of the part exposed to the air is coated with the self-luminous fluorescent material, the position of the module pool can be clearly marked at night or in a dark room and in the underground construction environment, and the function of safety prompt can be effectively played;

the utility model provides a rainwater collecting pit and construction method introduce in detail, it is here right the utility model discloses a principle describes, and the explanation of above theory of operation is only used for helping to understand the utility model discloses a core thought. It should be noted that, for those skilled in the art, the present invention can be modified and modified without departing from the principle of the present invention, and the modified and modified embodiments also fall into the protection scope of the claims of the present invention.

Claims (8)

1. The utility model provides a rainwater collecting pool, is including abandoning class pond (1), with abandoning the module pond (2) of class pond (1) connection, its characterized in that: a flow discarding pool filter screen (11) is arranged in the middle of the flow discarding pool (1), the flow discarding pool filter screen (11) divides the flow discarding pool (1) into a dirt filtering area and a settling area, wherein one end of the flow discarding pool (1) is provided with a water inlet, and the water inlet is connected with a rainwater inlet pipe (12); the other end of the flow abandoning pool (1) is a water outlet, the water outlet is connected with a water outlet pipe (13), the water outlet pipe (13) is connected with the module pool (2), water storage grids are uniformly distributed in the module pool (2), inspection wells (21) communicated with the water storage grids are symmetrically arranged at the two ends of each water storage grid, and a sewage pump (22) is arranged at the bottom of each inspection well (21); one of the inspection wells (21) is connected with the water outlet pipe (13), the bottom of the other inspection well (21) is provided with a sand basin (23), the side wall of the module water pool (2) close to one end of the sand basin (23) is provided with an overflow port, and the overflow port is connected with an overflow pipe (24).

2. A stormwater collection pool as claimed in claim 1, wherein: the filter screen (11) of the flow abandoning pool is an artificial grid.

3. A stormwater collection pool as claimed in claim 1, wherein: a cleaning outlet (14) is arranged at the top of the sewage filtering area, an inspection port (15) is arranged at the top of the settling area, and a discharge pump (16) is also arranged in the settling area.

4. A stormwater collection pool as claimed in claim 1, wherein: a reinforced concrete raft (3) is arranged at the bottom of the module pool (2); a filter screen (25) is also arranged between the water storage grid layer and the inspection well (21), and the filter screen (25) is a stainless steel net.

5. A stormwater collection pool as claimed in claim 1, wherein: one end of the sewage pump (22) is a water inlet end which is positioned at the bottom of the inspection well (21); the other end of the sewage pump (22) is a water outlet end which is connected with a sewage pipe, and the sewage pipe extends out of the inspection well (21).

6. A stormwater collection pool as claimed in claim 1, wherein: and a geotextile or a geomembrane (4) and a broken stone permeable layer (5) are sequentially arranged on the periphery of the modular water pool (2) from inside to outside.

7. A stormwater collection pool as claimed in claim 1, wherein: the plastic injection layer, the antirust layer and the warning layer are sequentially sprayed on the outer surfaces of the flow discarding pool (1), the module pool (2), the flow discarding pool filter screen (11), the rainwater inlet pipe (12), the water outlet pipe (13), the flow discarding pump (16), the inspection well (21), the sewage pump (22), the sand settling pool (23) and the overflow pipe (24) from inside to outside, and fluorescent powder is coated on the warning layer.

8. A stormwater collection pool as claimed in claim 7, wherein: the injection layer is injected with a high polymer wear-resistant material; the anti-rust layer comprises epoxy zinc-rich primer, chlorinated rubber finish paint and epoxy mica iron intermediate paint positioned between the epoxy zinc-rich primer and the chlorinated rubber finish paint; the warning layer is a yellow or black reflective warning tape or a reflective color film or reflective paint.

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