CN210315613U

CN210315613U - Foundation ditch blind ditch drainage construction structure

Info

Publication number: CN210315613U
Application number: CN201920675993.0U
Authority: CN
Inventors: 卢武成; 李德收; 李裕达; 柳云岳; 周文彬
Original assignee: Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Current assignee: Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-04-14
Anticipated expiration: 2029-05-13

Abstract

The utility model discloses a foundation pit blind ditch drainage construction structure, which comprises a foundation pit bottom, wherein a blind ditch is arranged at the position close to a side slope at the bottom of the foundation pit, a layer of dense safety net is laid on the inner wall of the blind ditch, cobblestones are filled above the dense safety net in the blind ditch, a water collecting well is arranged at the bottom of the foundation pit, and a steel filter cylinder is inserted in the water collecting well; by adopting the drainage construction structure, the blind ditches can be randomly arranged according to underground water emitting points, the bottom of the blind ditches is used as a reverse water filtering net by using a dense mesh safety net, cobblestones are filled in the ditches for drainage, the surface is paved with color strip cloth for preventing the pad concrete from invading, the drainage of the concrete pad bottom can be realized, the water collecting well adopts a plastic barrel bottom water squeezing method for concrete backfill plugging, the water cement ratio of backfill concrete is ensured, the embarrassing situation that a submersible pump is buried in the well is also prevented, and simultaneously, the water at the bottom of the water collecting well is extruded by using the principle that the concrete density is large, so that the water collecting well is plugged more tightly, and the problem of water leakage of the basement bottom plate at the water collecting well is solved.

Description

Foundation ditch blind ditch drainage construction structure

Technical Field

The utility model relates to a construction technical field specifically is foundation ditch french drain construction structure.

Background

When the building foundation pit is dug to the designed bottom elevation, if underground water is not treated, the interior of the foundation pit is always changed into a pile of mud, even when bottom plate concrete is poured, the bottom of the pit still has water accumulation, which not only affects the engineering quality, but also affects the construction progress, and causes the phenomenon.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a foundation ditch french drain drainage construction structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a foundation pit blind ditch drainage construction structure comprises a foundation pit bottom 1, a blind ditch 2 is arranged at the position, close to a side slope 101, of the foundation pit bottom 1, a layer of dense mesh safety net 4 is laid on the inner wall of the blind ditch 2, cobblestones 5 are filled above the dense mesh safety net 4 in the blind ditch 2, a layer of color strip cloth 9 is laid on the cobblestones 5, a steel plate net 10 is pressed above the color strip cloth 9, a concrete cushion 8 is poured above the steel plate net 10, a waterproof layer 11 is arranged above the concrete cushion 8, a waterproof protective layer 12 is arranged above the waterproof layer 11, a water collecting well 3 is arranged on the foundation pit bottom 1, a dense mesh safety net 4 is laid on the wall of the water collecting well 3, a steel filter cylinder 6 is inserted in the water collecting well 3, cobblestones 5 are filled between the wall of the water collecting well 3 and the steel filter cylinder 6, a submersible pump 13 is arranged at the bottom of the inner side of the steel filter cylinder 6, be connected with drinking-water pipe 7 on the immersible pump 13, the outside that the steel was strained to the upper end of drinking-water pipe 7 extends to, the outside lower extreme that the steel was strained 6 is provided with filtration pore 14, the outside upper end that the steel was strained 6 is provided with lower seal ring 15 and last water ring 16, the upper end that the steel was strained 6 extends to concrete cushion 8 top, lower seal ring 15 is located the centre of concrete cushion 8, it is located the top of concrete cushion 8 to go up water ring 16.

Preferably, the depth of the water collecting well 3 is 500mm, the diameter of the water collecting well is 1200mm, the diameter of the steel filter cartridge 6 is 500mm, the thickness of the steel filter cartridge 6 is 2mm, and the aperture of each filter hole 14 on the steel filter cartridge 6 is 5 mm.

Preferably, after the submersible pump 13 is taken out of the water collecting well 3, a plastic barrel 17 is placed in the water collecting well 3, the opening of the plastic barrel 17 faces upwards, the length of the plastic barrel 17 is 150mm, and the radius of the plastic barrel 17 is 1mm smaller than that of the steel filter cartridge 6.

Preferably, the width of the lower water stop ring 15 is 50mm, the width of the upper water stop ring 16 is 100mm, the upper water stop ring 16 is 150mm higher than the surface of the concrete cushion layer 8, and the mouth of the steel filter cylinder 6 is 100mm higher than the upper water stop ring 16.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has reasonable structure design and flexible construction, and is not easy to turn like a finished blind ditch, the blind ditch can be randomly arranged according to underground water emitting points by adopting the structure and the method, the bottom of the blind ditch uses a dense safety net as a reverse water filtering net, cobblestones are filled in the ditch for drainage, and the bottom of a concrete cushion is drained by paving the color strip cloth on the surface to prevent the concrete from invading; the water collecting well is plugged by backfilling concrete by a water squeezing method at the bottom of a plastic barrel pocket, so that the water-cement ratio of the backfilled concrete is ensured, the embarrassing situation that a submersible pump is buried in the well is prevented, and meanwhile, water at the bottom of the water collecting well is squeezed out by utilizing the principle that the density of the concrete is high, so that the water collecting well is plugged more tightly, and the problem of water leakage of a basement bottom plate at the position of the water collecting well is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1 according to the present invention;

FIG. 4 is an enlarged schematic view of the structure at C in FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the blind ditch of the present invention;

fig. 6 is a schematic view of a steel filter cartridge according to the present invention.

In the figure: the water-saving and water-saving type foundation pit comprises a foundation pit bottom 1, a side slope 101, a blind ditch 2, a water collecting well 3, a dense-mesh safety net 4, cobblestones 5, a steel filter cylinder 6, a water pumping pipe 7, a concrete cushion layer 8, color strip cloth 9, a steel plate net 10, a waterproof layer 11, a waterproof protective layer 12, a submersible pump 13, a filter hole 14, a lower water stop ring 15, an upper water stop ring 16 and a plastic barrel 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a foundation pit blind ditch drainage construction structure comprises a foundation pit bottom 1, blind ditches 2 are arranged at positions, close to side slopes 101, of the foundation pit bottom 1, when a foundation pit is excavated to a designed bottom elevation, blind ditches 2 with the width of 300mm and the depth of 300mm are manually excavated according to the water outlet condition of the foundation pit, 5 thousandths of slopes are placed, the bottoms of the blind ditches are made into circular arcs, paving of dense safety nets 4 and filling of cobblestones 5 are facilitated, a layer of dense safety nets 4 is paved on the inner walls of the blind ditches 2, the upper reverse side slopes of the dense safety nets 4 are 500mm wide, the upper reverse foundation pit bottoms are 200mm wide and are firmly nailed by steel nails, the width of the dense safety nets 4 is not less than 200mm when the dense safety nets are lapped, cobblestones 5 are paved above the dense safety nets 4 in the blind ditches 2, a layer of color strip cloth 9 is paved on the cobblestones 5, the color strip cloth 9 is 1000mm wide in the reverse direction, seepage water can be favorably distributed into the blind ditches along the color strips, and can be favorably, the width of the bottom of the reverse foundation pit is 300mm, steel nails are adopted for nailing firmly, the width of the color strip cloth is not smaller than 300mm when the color strip cloth is lapped, a steel plate net 10 is pressed above the color strip cloth 9, the side slope is designed according to slope support, the steel plate net 10 is laid, a dense mesh safety net 4 and the color strip cloth 9 are pressed by the steel plate net 10, the dense mesh safety net 4 and the color strip cloth 9 are prevented from falling off, a concrete cushion layer 8 is poured above the steel plate net 10, a waterproof layer 11 is arranged above the concrete cushion layer 8, and a waterproof protective layer 12 is arranged above the waterproof layer 11;

the foundation pit bottom 1 is provided with a water collecting well 3, the arrangement position of the water collecting well is determined according to the position of a main water overflow point at the bottom of the foundation pit and the arrangement condition of a vertical structure of a building, and the distance of a blind ditch converging into the water collecting well, the water collecting well 3 is excavated by adopting a rotary excavator, a dense mesh safety net 4 is laid on the wall of the water collecting well 3, a steel filter cylinder 6 is inserted in the water collecting well 3, the depth of the water collecting well 3 is 500mm, the diameter of the water collecting well is 1200mm, the diameter of the steel filter cylinder 6 is 500mm, the thickness of the steel filter cylinder is 2mm, the aperture of a filter hole 14 on the steel filter cylinder 6 is 5mm, cobblestones 5 are backfilled between the wall of the water collecting well 3 and the steel filter cylinder 6, the bottom of the inner side of the steel filter cylinder 6 is provided with a submersible pump 13, the submersible pump 13 is connected with a water pumping pipe 7, the upper end of the water pumping pipe 7 extends to the outside of, the length of the plastic barrel 17 is 150mm, the radius of the plastic barrel 17 is 1mm smaller than that of the steel filter barrel 6, the lower end of the outer side of the steel filter barrel 6 is provided with a filter hole 14, bottom plate concrete (a concrete cushion layer 8) is poured at the side slope 101 and the foundation pit bottom 1, when the bottom plate concrete is poured to be close to a water collecting well, water in the water collecting well is drained as much as possible, a submersible pump 13 is lifted, then the plastic barrel 17 is plugged into the steel filter barrel 6, then micro-expansion concrete with the same strength grade as the bottom plate is adopted to fill the water collecting well 3, and in the filling process, the micro-expansion concrete pushes the plastic barrel 17 to extrude downwards, so that the water at the bottom of the steel filter barrel 6 is extruded through the filter hole 14, meanwhile, the plastic barrel 17 can also expand to be tightly combined with the steel filter barrel, and the micro-expansion concrete is poured together;

the upper end of the outer side of the steel filter cylinder 6 is provided with a lower water stop ring 15 and an upper water stop ring 16, the upper end of the steel filter cylinder 6 extends to the position above the concrete cushion layer 8, the lower water stop ring 15 is located in the middle of the concrete cushion layer 8, the upper water stop ring 16 is located above the concrete cushion layer 8, the width of the lower water stop ring 15 is 50mm, the width of the upper water stop ring 16 is 100mm, the upper water stop ring 16 is 150mm higher than the surface of the concrete cushion layer 8, and the opening of the steel filter cylinder 6 is 100mm higher than the upper water stop ring 16.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Foundation ditch blind ditch drainage construction structure, including basic pit bottom (1), its characterized in that: the foundation pit bottom (1) is provided with a blind ditch (2) close to a side slope (101), the inner wall of the blind ditch (2) is paved with a layer of dense mesh safety net (4), cobblestones (5) are filled above the dense mesh safety net (4) in the blind ditch (2), a layer of color strip cloth (9) is paved on the cobblestones (5), a steel plate net (10) is pressed above the color strip cloth (9), a concrete cushion (8) is poured above the steel plate net (10), a waterproof layer (11) is arranged above the concrete cushion (8), a waterproof protective layer (12) is arranged above the waterproof layer (11), a water collecting well (3) is arranged on the foundation pit bottom (1), the dense mesh safety net (4) is paved on the well wall of the water collecting well (3), a steel filter cylinder (6) is inserted in the water collecting well (3), and cobblestones (5) are arranged between the well wall of the water collecting well (3) and the steel filter cylinder (6), immersible pump (13) have been placed to the inboard bottom that the steel was strained section of thick bamboo (6), be connected with drinking-water pipe (7) on immersible pump (13), the outside that the steel was strained section of thick bamboo (6) is extended to the upper end of drinking-water pipe (7), the outside lower extreme that the steel was strained section of thick bamboo (6) is provided with filtration pore (14), the outside upper end that the steel was strained section of thick bamboo (6) is provided with lower seal ring (15) and last seal ring (16), the upper end that the steel was strained section of thick bamboo (6) extends to concrete cushion (8) top, lower seal ring (15) are located the centre of concrete cushion (8), it is located the top of concrete cushion (8) to go up seal ring (16).

2. The foundation pit blind ditch drainage construction structure of claim 1, characterized in that: the depth of the water collecting well (3) is 500mm, the diameter of the water collecting well is 1200mm, the diameter of the steel filter cylinder (6) is 500mm, the thickness of the steel filter cylinder is 2mm, and the aperture of each filter hole (14) in the steel filter cylinder (6) is 5 mm.

3. The foundation pit blind ditch drainage construction structure of claim 1 or 2, characterized in that: when the submersible pump (13) is taken out of the water collecting well (3), a plastic barrel (17) is placed in the water collecting well (3), the barrel opening of the plastic barrel (17) faces upwards, the length of the plastic barrel (17) is 150mm, and the radius of the plastic barrel (17) is 1mm smaller than that of the steel filter barrel (6).

4. The foundation pit blind ditch drainage construction structure of claim 1, characterized in that: the width of the lower water stop ring (15) is 50mm, the width of the upper water stop ring (16) is 100mm, the upper water stop ring (16) is 150mm higher than the surface of the concrete cushion layer (8), and the opening of the steel filter cylinder (6) is 100mm higher than the upper water stop ring (16).