CN115075292A - Method for developing and utilizing logistics storage space of waste open-air sand pit - Google Patents
Method for developing and utilizing logistics storage space of waste open-air sand pit Download PDFInfo
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- CN115075292A CN115075292A CN202210232445.7A CN202210232445A CN115075292A CN 115075292 A CN115075292 A CN 115075292A CN 202210232445 A CN202210232445 A CN 202210232445A CN 115075292 A CN115075292 A CN 115075292A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/58—Construction or demolition [C&D] waste
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- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a method for developing and utilizing logistics storage space of a waste open-air sand pit, which comprises the following steps: carrying out exploration and partition on the waste open pit; cleaning the waste open-air sand pit, and primarily leveling the field in the waste open-air sand pit; relieving unstable highwalls of the abandoned open-air sand pit, and cleaning the highwalls which are loose and have cracks; removing islands in the waste open-air sand pits, and leveling pit bottom terrains of continuous areas in the waste open-air sand pits; stripping surface soil in the waste open pit, and extending the stripping range of the surface soil to the outer edge of the surface of the waste open pit; strengthening the bearing capacity of the bottom foundation and the foundation column foundation of the waste open-air sand pit; constructing a logistics storage building and paving a logistics field road; constructing a drainage system of the waste open-air sand pit; the underground space of the existing abandoned open-air sand pit is utilized to construct the abandoned open-air sand pit into an underground logistics storage system compatible with the urban expressway transportation function, so that the system has the storage and transportation functions of bulk goods, and can safely store the goods.
Description
Technical Field
The invention relates to the technical field of restoration treatment and development and utilization of mine environment, in particular to a method for developing and utilizing logistics storage space of a waste open-pit.
Background
At present, most of waste open-air sand pits are in an idle state or used for storing household garbage or construction garbage, and the waste open-air sand pits are not effectively developed and utilized. The waste open-air sand pit is utilized according to the space characteristics of the waste open-air sand pit, so that the underground space of the waste open-air sand pit can be recycled; therefore, a method for reusing the underground space of the waste open pit is required.
Disclosure of Invention
In view of the above, the present invention is directed to a method for developing and utilizing logistics storage space of waste open-air sand pits.
Based on the purpose, the invention provides a method for developing and utilizing logistics storage space of a waste open-pit, which comprises the following steps: carrying out exploration and zoning on the waste open-air sand pit; cleaning the waste open-air sand pit, and primarily leveling the site condition in the waste open-air sand pit; relieving unstable highwalls of the abandoned open-air sand pit, and cleaning the highwalls which are loose and have cracks; removing the isolated island in the abandoned open pit, and leveling the pit bottom topography of the connected area in the abandoned open pit; stripping surface soil in the waste open pit, and extending the stripping range of the surface soil to the outer edge of the surface of the waste open pit; strengthening the bearing capacity of the bottom foundation and the foundation column foundation of the waste open-air sand pit; constructing a logistics storage building and paving a logistics field road; and constructing a drainage system of the waste open-air sand pit.
From the above, the method for developing and utilizing the logistics storage space of the waste open-air sand pit provided by the invention utilizes the underground space of the existing waste open-air sand pit to construct the waste open-air sand pit into an underground logistics storage system compatible with the urban expressway transportation function, has the storage and transportation functions of bulk goods, can safely store the goods, and improves the efficiency of acquiring and transporting the bulk goods.
The method can meet the requirement of a city on large cargo collecting and distributing sites by developing and utilizing the waste open-air sand pits to form logistics storage spaces, reduces the construction cost of large storage facilities, has the characteristic of being connected with a road network, is convenient to transport, and improves the distribution and transportation efficiency of a logistics park.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a cross-sectional view of a sand pit with a slope condition;
FIG. 2 is a cross-sectional view of a sand pit without relief condition, which is provided by an embodiment of the present invention;
fig. 3 is a cross-sectional view of the logistics storage space development and auxiliary facilities arrangement of the abandoned sand pit with the slope relief condition provided by the embodiment of the invention;
FIG. 4 is a cross-sectional view of the logistics storage space development and auxiliary facilities layout of a waste sand pit without slope relief provided by an embodiment of the present invention;
fig. 5 is a plan view of the development and utilization of the waste sand pit logistics storage space provided by the embodiment of the invention.
The numbers in the figures are as follows: 1-original side slope of a waste open pit, 2-slope cutting and load reducing area of side slope of the sand pit, 3-side slope cutting and load reducing area of the sand pit, 4-island, 5-backfill area of the waste sand pit, 6-digging area of the waste sand pit, 7-foundation of the flattened bottom of the waste sand pit, 8-original earth surface of the outer edge of the sand pit, 9-lower support of side slope of the sand pit, 10-logistics storage building, 11-branch auxiliary road, 12-drainage system of the waste sand pit, 13-vegetation greening of the side slope of the waste sand pit, 14-photovoltaic power generation, 15-greening of roof of the logistics storage building, 16-parking area of large-scale logistics transport vehicles and 17-urban expressway.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that technical terms or scientific terms used in the embodiments of the present invention should have a general meaning as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined.
The method for developing and utilizing the logistics storage space of the abandoned open pit according to the invention is described in detail below with reference to the accompanying drawings.
As an embodiment of the invention, the abandoned sand pits (hereinafter referred to as 'sand pits') developed and utilized by the G6 high-speed cold-chain logistics park are positioned on the north side of the Kyokunjing G6 highway (Rojiaying-Haoqin Yingzhang section) in the northern part of the Heanhote City and the south side of the Hara update village, the occupied area of the sand pits is about 19.7 ten thousand square meters, the ground shape is the sand pit with the depth of about 28 meters formed by sand excavation for long-term construction, the early stage is caused by sand excavation and soil taking during construction of 110 national roads and urban construction, and the late stage is caused by late stage theftThe phenomenon of random mining causes the environment to be continuously deteriorated, so that the area of the sand pit and the damage depth are increased. A simple road is arranged near the sand pit and communicated with a 110 national road, so that the traffic is convenient. The exposed stratum of the waste open pit is a fourth system full-new system flood-deposited gravel pebbles, and is controlled by geological structures and ancient geographic environments, and the fourth system loose accumulation is large in thickness. From the region, the stratum in the abandoned sand pit is updated from an upper system to a complete new system (Q) 3-4 ) The rock-soil body type mainly comprises gravelly soil, and has the characteristics of high bearing capacity, small compression ratio and good engineering geological conditions.
According to the geological environment background, the mineral resource types and the open pit mining mode of the sand pit, considering that the sand pit is abandoned for many years and is positioned on the north side of the highway Hubao section of the G6 Kyowa Kanghai-Kanghai where the traffic is convenient, the method for developing and utilizing the logistics storage space of the abandoned open pit can be used for developing and utilizing the underground space of the sand pit, and specifically, the method for developing and utilizing the logistics storage space of the abandoned open pit comprises the following steps:
1) the method is used for surveying and partitioning the waste open pit area and accurately surveying the scale of the open underground space which can be utilized by the waste open pit so as to divide the specific logistics storage space development and utilization mode in the site and calculate the leveling and balancing earth volume of the site.
Specifically, when the abandoned open pit is surveyed, the depth and the connectable leveling area of the bottom of the abandoned open pit after leveling are found, the unstable slope distribution range of the open pit is found, the abandoned open pit backfill area 5 and the abandoned sand pit excavation area 6 in the connected area of the abandoned open pit are determined by utilizing an earthwork balance calculation method, as shown in fig. 1 and 2, and the construction elevations of the abandoned open pit backfill area 5 and the abandoned open pit excavation area 6 are designed according to the construction elevations.
According to the requirements of underground logistics warehouses built in the waste open pit fields, the fields of the pre-built warehouses in the waste open pit can be divided into three types according to the depth of development and utilization of the sand pits and the continuous areas of the sand pits, and the types are shown in table 1.
Wherein, the depth of the I-type sand pit field is less than 5m, and the area of the connected pieces is smallAt 50000m 2 The method is suitable for building single-layer small logistics storage facilities; the depth of the II-type sand pit field is more than 5m and less than 25m, and the area of the connected pieces is more than 50000m 2 And less than 100000m 2 The method is suitable for building three-layer or below medium-sized logistics storage facilities; the depth of the III-class sand pit field is more than 25m, and the area of the connected pieces is more than 150000m 2 And is suitable for building multilayer large-scale logistics storage facilities.
TABLE 1 requirements for the logistics and storage site of abandoned open-air sand pits
| Type (B) | Depth (m) | Area of connected piece (m) 2 ) |
| Class I | <5 | <50000 |
| Class II | 5～25m | 50000～100000 |
| Class III | >25m | >150000 |
The method is suitable for developing and utilizing III-type waste open pit fields, and the depth of the bottom surface of the sand pit after the waste open pit is repaired to be more than 25m from the earth surface, and the area of the waste sand pit connected with the plate is more than 150000m 2 And requires lower underground water level around the abandoned sand pit and side walls of the sand pitNo underground water is exposed, no surface water system exists within 1km around the surface of the sand pit, and the site foundation is not soaked by the underground water.
2) The method has the advantages that solid waste in the waste open pit is cleaned, accumulated water and sewage are discharged, the site is cleaned, and the site condition in the waste open pit is leveled primarily, so that the purpose of mechanical construction in the pit in the later period is facilitated.
Clearing up garbage and clearing and transporting waste in sand pit
In a defined development and utilization area of the waste open-air sand pit, the residual domestic garbage and construction garbage which are movably accumulated in human engineering and distributed in the sand pit are cleaned, waste buildings at the periphery of the sand pit are dismantled, and the garbage and solid wastes are cleaned to a stacking area which is designed to be outside 50m of the periphery of the original earth surface 8 at the outer edge of the sand pit and are stored in a sealed mode or are filled into other sand pits in the peripheral area to be buried after layered rolling.
② cleaning and discharging accumulated water and sludge in sand pit
Pumping accumulated water and sludge accumulated by natural rainfall in the waste open pit, arranging a temporary pipeline to be pumped and discharged to an external discharge area within 50m specified outside the pit, or pumping and discharging by a tank truck and transporting to a sewage treatment field, and strictly preventing the accumulated water from being discharged during pumping and discharging; clearing the wild vegetation and the sludge in the sand pit, and conveying the wild vegetation and the sludge to a designed stockpiling place which is the same as the solid waste.
3) The unstable side slope of the abandoned open-air sand pit is relieved, the side slope which is loose and has cracks is cleaned, and the stability of the side slope of the sand pit is ensured.
And (3) eliminating unstable highwalls at the edges of the waste open pit, and clearing the original highwalls 1 of the waste open pit, which have pumice stones and loose cracks. The method for eliminating the upper load of the slope cutting and load reducing area 2 of the side slope of the sand pit is adopted, a small bulldozer or a manual matching machine is utilized for construction, the inclination angle of the side slope is adjusted from the ground to the bottom direction of the side slope of the sand pit, as shown in figure 1, the inclination angle of the side slope with the slope releasing condition is adjusted to be less than 30 degrees, a sand pit side slope 3 after slope cutting is obtained, as shown in figure 2, after the upper load of the side slope without the slope releasing condition is eliminated, a lower support 9 of the side slope of the sand pit is built within the range of a lower edge 1/3 of the side slope, and the design and construction of the lower support 9 of the side slope of the sand pit refer to the relevant technical specifications of the slope prevention and control engineering of buildings. The rock and soil mass removed from the side slope body of the waste open-air sand pit is transported to a waste sand pit backfilling area 5 nearby, and direct outward transportation of the rock and soil mass is reduced.
4) And excavating isolated islands in the abandoned open-air sand pits, and leveling the pit bottom topography of the inter-segment areas in the sand pits to provide site conditions for the construction of logistics storage facilities.
As shown in fig. 1 and 2, carry out abandonment sand pit bottom of a pit topography and maintain, utilize backhoe excavating machinery to clear up the island 4 of abandonment sand pit connection piece intra-area distribution, clear up the order and clear up to the island near the sand pit edge by the inside island of sand pit, and according to the clearance order by island top to island bottom, the ground body after the clearance transports and rolls in 5 districts of the abandonment sand pit backfill nearby in layering, the flattening, until clear up the island elevation to be the same with the place construction elevation, reduce the external transportation of ground body.
5) Surface soil stripping of sand pit treatment area
And stripping surface soil in the waste open-air sand pit treatment area, extending the stripping range of the surface soil to 5-10 m from the outer edge of the original earth surface 8 at the outer edge of the sand pit, preferably 100-150 mm in surface soil stripping depth, and stripping 150mm in the area with the surface soil thickness larger than 200 mm. The surface soil can be stacked and stored at a distance of 15m from the outer edge of the sand pit after being peeled off, water is sprayed to the surface soil stacking area for at least 1 time every week, the unit area spraying time is not less than 30s, and damage and loss of nutrient components after disturbance of surface soil of the repairing area can be reduced by spraying water to the surface soil stacking area. The amount of water sprayed may be 500 square meters of topsoil per cubic meter of water.
6) Strengthening bearing capacity of foundation and foundation column foundation at bottom of abandoned sand pit site
As shown in fig. 1 and fig. 2, the foundation at the bottom of the abandoned sand pit field is compacted by the impact force of large and medium-sized compaction mechanical equipment, the compaction frequency per square meter is not less than 50, the compacted and compacted foundation of the sand pit field is leveled by a scraping machine, a leveled foundation 7 of the bottom of the abandoned sand pit field is obtained, and the leveling degree in the field is not more than 10 cm. And (2) at the position of a foundation column base of the architectural design, spraying cement slurry into a sand layer by adopting a deep stirring machine in the drilling process, mixing the slurry according to the water-cement ratio of 0.5, uniformly stirring, then feeding and spraying, wherein the stirring time is not less than 3min, and the bearing capacity of the foundation is required to be more than 150kPa after the foundation is treated by deep stirring.
7) Logistics storage building construction and logistics field road laying
As shown in fig. 3 and 4, according to the requirements of the logistics storage building construction facilities, a multi-story logistics storage building 10 is constructed, and design parameters and construction specifications of the logistics storage building 10 refer to standard construction specifications of storehouses such as general warehouse and storage area planning design parameters (national standard GB/T28581-2012), and the storage area, the unloading area, the processing and packaging area and the office area are reasonably arranged.
As shown in figure 5, the road in the waste sand pit is led into the branch auxiliary road 11 from the urban expressway 17 to enter the waste sand pit logistics storage area, and the large logistics transport vehicle parking area 16 is arranged in the field and is close to the unloading area of the logistics storage building, so that the logistics goods can be conveniently loaded and unloaded. The minimum turning radius of the branch auxiliary road is not less than 25 m.
8) Construction of waste open-air sand pit drainage system
The waste sand pit drainage system 12 is divided into a waste sand pit edge outer edge drainage unit and a waste sand pit inner drainage unit according to the functions of the waste sand pit edge outer edge drainage unit and the waste sand pit inner edge drainage unit. The waste sand pit edge outer edge drainage unit is a construction method using a small ditching machine or a manual auxiliary machine, a water retaining cofferdam and an outer drainage ditch are constructed outside the earth surface of the edge of the outer edge of a development and utilization area, the ditch mouth of the outer drainage ditch is 10cm higher than the earth surface, the ditch depth is 0.8m to 1.2m, the slope ratio of the outer drainage ditch is 1%, smooth drainage can be ensured, cement seepage prevention is performed in the ditch, and a drainage ditch cover plate made of resin or cast iron is used. And water discharged by the drainage units at the outer edge of the side wall of the waste sand pit is collected by the outer drainage ditch and then is intensively drained out of the sand pit.
The drainage unit in the abandoned sand pit is composed of a plurality of outer drainage ditches and intercepting ditches, wherein the outer drainage ditches are arranged along the side slope of the sand pit, the intercepting ditches are arranged along the bottom edge of the sand pit, the interval between every two adjacent outer drainage ditches is 20m, the outer drainage ditches and the intercepting ditches are not provided with ditch top cover plates, the sizes of the outer drainage ditches and the intercepting ditches are determined according to rainfall, the deep parts of the outer drainage ditches and the intercepting ditches are not smaller than 1.0m, the width of the outer drainage ditches and the intercepting ditches is not smaller than 0.5m, and gravel concrete impermeable layers are arranged in the ditches.
9) Pit wall soil covering greening and roof greening
The surface soil stripped in the development and utilization of the waste open-air sand pit is repeatedly covered on the roof of the logistics storage building, the roof of the logistics storage building and the terrace are used for planting trees and flowers, meanwhile, the trees and flowers are planted on the side walls of the sand pit, a logistics storage building roof greening 15 and a waste sand pit side wall vegetation greening 13 are formed, and the peripheral landscape of the sand pit and the roof building landscape are improved. The roof greening engineering can play a good role in building heat preservation and insulation, reducing noise in a warehouse and saving energy consumption of the warehouse, and the vegetation greening 13 on the edge of the waste sand pit can control noise propagation of a sand pit logistics park.
10) Construction of sand pit logistics storage matching system
The sand pit logistics and warehousing supporting system comprises lighting, communication, fire protection, drainage, lighting, temperature and humidity control, shock prevention, wind prevention, lightning protection, freezing prevention, ventilation and the like. As shown in fig. 3, 4 or 5, a photovoltaic power generator 14 is installed on the roof of the logistics storage building for providing power supply for the storage facilities and the supporting system.
It should be noted that the embodiments of the present invention can be further described in the following ways:
a method for developing and utilizing logistics storage space of a waste open pit comprises the following steps: carrying out exploration and partition on the waste open pit; cleaning the waste open-air sand pit, and primarily leveling a field in the waste open-air sand pit; relieving unstable highwalls of the abandoned open-air sand pit, and cleaning the highwalls which are loose and have cracks; removing the isolated island in the abandoned open pit, and leveling the pit bottom topography of the connected area in the abandoned open pit; stripping surface soil in the waste open pit, and extending the stripping range of the surface soil to the outer edge of the surface of the waste open pit; strengthening the bearing capacity of the bottom foundation and the foundation column foundation of the waste open-air sand pit; constructing a logistics storage building and paving a logistics field road; and constructing a drainage system of the waste open-air sand pit.
Optionally, the step of surveying and zoning the abandoned open pit comprises: and (3) surveying the scale of the available underground space of the waste open pit, and partitioning the site of a pre-built warehouse in the waste open pit according to the development and utilization depth and the continuous area of the pit.
Optionally, the surveying comprises: finding out the depth and the connectable leveling area of the leveled pit bottom of the abandoned open pit; ascertaining an unstable highwall distribution area of the abandoned open pit; determining a backfill region and an excavation region in the waste open pit connecting region, and designing the construction elevation of the backfill region and the excavation region.
Optionally, the step of mitigating unstable highwalls of the abandoned open pit comprises: and adjusting the inclination angle of the unstable side slope from the ground to the bottom of the side slope, adjusting the inclination angle of the unstable side slope with the slope releasing condition to be less than 30 degrees, eliminating the upper load of the unstable side slope without the slope releasing condition, and building the retaining wall within the range of the lower edge 1/3 of the unstable side slope.
Optionally, the step of removing islands in the abandoned open pit and leveling the pit bottom topography of the continuous area in the abandoned open pit comprises: clear away earlier the inside island of abandonment open-air sand pit, clear away the island at sand pit edge position again, and clear up to the island bottom by the island top, transport the ground body after the clearance to the regional interior layering of backfill earth that closes on and roll, the flattening.
Optionally, the stripping depth of the surface soil is 100-150 mm, and the stripping range of the surface soil extends to the outer edge of the ground surface of the waste open pit by 5-10 m.
Optionally, the water cement ratio of the cement slurry used for reinforcing the bearing capacity of the foundation pillar base is 0.5.
Optionally, the logistics site road comprises a branch road, and the minimum turning radius of the branch road is not less than 25 m.
Optionally, the drainage system comprises a side outer edge drainage unit and a sand pit inner drainage unit; the side edge outer edge drainage unit comprises a water retaining weir and an outer drainage ditch which are constructed outside the earth surface of the side edge of the waste open-air sand pit, the ditch opening of the drainage ditch is 10cm higher than the earth surface, the ditch depth is 0.8-1.2 m, and the slope ratio is 1%; the drainage unit in the sand pit comprises an outer drainage ditch and a water interception ditch, wherein the outer drainage ditch is arranged along the side slope of the sand pit in an inclined mode, the water interception ditch is arranged along the bottom edge of the sand pit, the depth of the outer drainage ditch and the depth of the water interception ditch are larger than or equal to 1.0m, and the width of the outer drainage ditch and the width of the water interception ditch are larger than or equal to 0.5 m.
Optionally, the method further comprises: the stripped surface soil is repeatedly covered on the top of the logistics storage building, and the top roof and the terrace of the logistics storage building are utilized to plant tree flowers; and constructing a logistics storage matching system.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to those examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the invention.
Claims (10)
1. A method for developing and utilizing logistics storage space of a waste open-air sand pit is characterized by comprising the following steps:
carrying out exploration and partition on the waste open pit;
cleaning the waste open-air sand pit, and primarily leveling a field in the waste open-air sand pit;
relieving unstable highwalls of the abandoned open-air sand pit, and cleaning the highwalls which are loose and have cracks;
removing the isolated island in the abandoned open pit, and leveling the pit bottom topography of the connected area in the abandoned open pit;
stripping surface soil in the waste open pit, and extending the stripping range of the surface soil to the outer edge of the surface of the waste open pit;
strengthening the bearing capacity of the bottom foundation and the foundation column foundation of the waste open-air sand pit;
constructing a logistics storage building and paving a logistics field road;
and constructing a drainage system of the waste open-air sand pit.
2. The method of claim 1, wherein the step of surveying and zoning the abandoned open pit comprises:
and (3) surveying the scale of the available underground space of the waste open pit, and partitioning the site of a pre-built warehouse in the waste open pit according to the development and utilization depth and the continuous area of the pit.
3. The method of claim 1, wherein the surveying comprises:
finding out the depth and the connectable leveling area of the leveled pit bottom of the abandoned open pit;
ascertaining an unstable highwall distribution area of the abandoned open pit;
determining a backfill region and an excavation region in the waste open pit connecting region, and designing the construction elevation of the backfill region and the excavation region.
4. The method of claim 1, wherein the step of mitigating unstable highwalls of the abandoned open pit comprises:
and adjusting the inclination angle of the unstable side wall from the ground to the bottom of the side wall, adjusting the inclination angle of the unstable side wall with the slope releasing condition to be less than 30 degrees, eliminating the upper load of the unstable side wall without the slope releasing condition, and building the retaining wall within the range of the lower edge 1/3 of the unstable side wall.
5. The method of claim 1, wherein said step of removing islands in said abandoned open pit and leveling pit floor terrain in contiguous areas of said abandoned open pit comprises:
clear away earlier the inside island of abandonment open-air sand pit, clear away the island at sand pit edge position again, and clear up to the island bottom by the island top, transport the ground body after the clearance to the regional interior layering of backfill earth that closes on and roll, the flattening.
6. The method according to claim 1, wherein the depth of the surface soil stripping is 100-150 mm, and the stripping range of the surface soil is extended to 5-10 m of the outer edge of the surface of the waste open pit.
7. The method of claim 1, wherein the cement grout used to reinforce the bearing capacity of the foundation is used at a water-cement ratio of 0.5.
8. The method of claim 1, wherein the logistics site road comprises a branch road, and the minimum turning radius of the branch road is not less than 25 m.
9. The method of claim 1, wherein the drainage system comprises a highwall peripheral drainage cell and a sandpit internal drainage cell;
the side outer edge drainage unit comprises a water retaining weir and an outer drainage ditch which are constructed outside the earth surface of the side of the waste open-air sand pit, the ditch opening of the drainage ditch is 10cm higher than the earth surface, the ditch depth is 0.8-1.2 m, and the slope ratio is 1%;
the drainage unit in the sand pit comprises an outer drainage ditch and a water interception ditch, wherein the outer drainage ditch is arranged along the side slope of the sand pit in an inclined mode, the water interception ditch is arranged along the bottom edge of the sand pit, the depth of the outer drainage ditch and the depth of the water interception ditch are larger than or equal to 1.0m, and the width of the outer drainage ditch and the width of the water interception ditch are larger than or equal to 0.5 m.
10. The method of claim 1, further comprising:
the stripped surface soil is repeatedly covered on the top of the logistics storage building, and the top roof and the terrace of the logistics storage building are utilized to plant tree flowers;
and constructing a logistics storage matching system.
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