CN114032937B - Foundation pit drainage device and construction method thereof - Google Patents
Foundation pit drainage device and construction method thereof Download PDFInfo
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- CN114032937B CN114032937B CN202111463805.6A CN202111463805A CN114032937B CN 114032937 B CN114032937 B CN 114032937B CN 202111463805 A CN202111463805 A CN 202111463805A CN 114032937 B CN114032937 B CN 114032937B
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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
- E02D19/10—Restraining of underground water by lowering level of ground water
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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
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/22—Lining sumps in trenches or other foundation pits
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The application relates to a foundation pit drainage device and a construction method thereof, relating to the technical field of building construction. The utility model provides a foundation ditch drainage device includes the platform that catchments, the porous disk, collector pipe and drainage component, the platform that catchments is located the foundation ditch bottom, the bench surface that catchments sets up downwards along the direction slope that central department orientation is close to the foundation ditch edge, the porous disk is located the bench side that catchments, form the sump pit between porous disk and the platform that catchments, a plurality of holes of permeating water have been seted up on the porous disk, hole and sump pit intercommunication permeate water, the collector pipe is equipped with a plurality ofly, a plurality of collector pipes are vertical respectively to be set up in the edge department of foundation ditch, collector pipe one end and sump pit intercommunication, drainage component is used for discharging the rainwater in the sump pit. During operation, accumulated water in a small water pit at the bottom of the foundation pit and the ditch leaks into the water collecting well through the water permeable plate, and then the accumulated water collected in the water collecting well is discharged by utilizing the drainage assembly. The foundation pit drainage device has the advantages of high construction efficiency and good drainage effect.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a foundation pit drainage device and a construction method thereof.
Background
The foundation pit is a space below the ground excavated for constructing a building foundation and a basement. Because the construction process of the foundation pit is long, and the building construction process is also long later, if the rainwater weather is met in the middle of the construction process, a large amount of water can be accumulated in the foundation pit, so that the construction is greatly influenced, and the drainage work is needed to be done after the foundation pit construction.
Among the correlation technique, generally adopt the water pump to draw water and handle, but the foundation ditch bottom is very smooth, and some low-lying or depressed part can all exist to the foundation ditch bottom generally, consequently when the water pump with the whole back of taking out most ponding, the foundation ditch bottom still can remain partly ponding in little sump and the ditch and can't be discharged by the water pump.
In view of the above-mentioned related art, the inventor believes that the accumulated water in the small pit and the ditch at the bottom of the foundation pit cannot be drained when the water is drained by the water pump in the related art, and thus the drainage effect is not good.
Disclosure of Invention
In order to improve the drainage effect of the drainage device, the application provides a foundation pit drainage device and a construction method thereof.
In a first aspect, the present application provides a foundation pit drainage device, adopt following technical scheme:
the utility model provides a foundation pit drainage device, includes collection water platform, porous disk, collector pipe and drainage component, the collection water platform is located the foundation pit bottom, the top surface of the platform that catchments sets up downwards along the direction slope that central department orientation is close to the foundation pit edge, the porous disk is located collection water bench side, the porous disk with form the sump pit between the platform that catchments, a plurality of holes of permeating water have been seted up on the porous disk, the hole of permeating water with the sump pit intercommunication, the collector pipe is equipped with a plurality ofly, and is a plurality of the collector pipe is vertical respectively to be set up in the edge department of foundation pit, collector pipe one end with the sump pit intercommunication, drainage component is equipped with a plurality ofly, each drainage component is located one respectively in the collector pipe, drainage component be used for with rainwater in the sump pit discharges.
Through adopting above-mentioned technical scheme, when raining, there is a large amount of ponding in the foundation ditch, utilize the water pump to take ponding out, foundation ditch bottom this moment remains some subsection little sump and ditch, ponding in little sump and the ditch passes through the porous disk seepage to catchment bench, then ponding flows in the sump through the catchment bench surface of slope, then utilize drainage assembly will catchment in the sump collect the ponding discharge can, above-mentioned structure can be convenient for discharge the ponding in remaining little sump of foundation ditch bottom and the ditch fast, thereby make foundation ditch bottom keep dry, avoid long-time ponding of foundation ditch bottom to lead to the problem that the foundation ditch sinks or influence the construction, drainage effect who has effectively promoted drainage device.
Optionally, the water-absorbing structure further comprises a supporting and protecting plate installed on the side wall of the foundation pit, the supporting and protecting plate is arranged in a hollow mode, a plurality of water-permeating holes are formed in one side, close to the side wall of the foundation pit, of the supporting and protecting plate, and the supporting and protecting plate is fixedly connected with water-absorbing cloth used for sealing the water-permeating holes.
Through adopting above-mentioned technical scheme, the installation of foundation ditch lateral wall props up the backplate and can prevent that the foundation ditch lateral wall from collapsing, and the groundwater of foundation ditch lateral wall can flow in through the infiltration hole simultaneously inside a backplate, and the cloth that absorbs water sets up in infiltration hole department simultaneously, can be with the groundwater drainage of foundation ditch lateral wall to the supporting plate in, the earth slump that the foundation ditch lateral wall can also be avoided to the cloth that absorbs water to the supporting plate in. The underground water of the side wall of the foundation pit can be further collected by arranging the supporting and protecting plate, so that the problem that the construction is influenced due to water seepage of the side wall of the foundation pit is avoided, and the drainage effect of the drainage device is effectively improved.
Optionally, the supporting plate includes a plurality of first splice plates and a plurality of second splice plates, the first splice plates and the second splice plates are detachably connected and are internally communicated with each other, and the interior of the first splice plates located at the corner of the foundation pit is communicated with the water collecting pipe.
Through adopting above-mentioned technical scheme, set up a plurality of detachable splice plates and can be convenient for install a backplate on the foundation ditch lateral wall fast to effectively improved foundation ditch drainage device's efficiency of construction, the ponding of collecting in the splice plate flows through the collector pipe and then flows into in the collector well, then through drainage device with ponding discharge can, foretell structure can be convenient for discharge the groundwater of foundation ditch lateral wall seepage fast, thereby further strengthened foundation ditch drainage device's drainage effect.
Optionally, the drainage device includes a sealing plate and a water pump, the sealing plate is located in the water collecting pipe, the water pump is located on one side of the sealing plate close to the bottom of the foundation pit, the water pump is fixedly connected with the sealing plate, the water pump is connected with a water outlet pipe, and the water outlet pipe extends out of the water collecting pipe.
Through adopting above-mentioned technical scheme, when having ponding in the sump pit, open the water pump and discharge ponding bucket outlet pipe to outside the foundation ditch, the closing plate can avoid debris to fall into in the sump pit in the work progress to keep the cleanness of sump pit, reduce the water pump and easily by the problem of debris jam.
Optionally, a water hole is formed in the water collecting pipe, the horizontal height of the water hole is higher than that of the water permeable plate, the sealing plate is connected in the water collecting pipe in a sliding mode along the axial direction, and the sealing plate is a porous buoyancy plate.
Through adopting above-mentioned technical scheme, through seting up the water hole on the collector pipe, when rainy day rainfall is great, in time, in the porous disk inflow collector well can not be followed to a large amount of rainwater, the rainwater gathers in the foundation ditch this moment, the water level rises to not crossing the water hole in the foundation ditch, then ponding in the foundation ditch flows in collector pipe and collector well through crossing the water hole, the rising of water level drives the closing plate in the collector pipe and rises along the collector pipe, it rises to drive the water pump when the closing plate rises, thereby make the water pump keep away from the collector well, the ponding in the foundation ditch is directly discharged through crossing the water hole to the water pump this moment, has higher drainage efficiency, avoid ponding to soak the foundation ditch for a long time, reduce the risk that the foundation ditch sinks. After the water level drops to being less than the water hole of crossing in the foundation ditch, remaining ponding in the foundation ditch passes through the porous disk and gets into in the sump pit, the closing plate descends along with the water level reduction in the sump pit, thereby it removes to in the sump pit to drive the water pump, can discharge the ponding in the sump pit, through setting up foretell structure, can be according to how much change water pump's of ponding in the foundation ditch position, thereby can discharge the technique in the foundation ditch fast, avoid long time ponding in the foundation ditch to lead to the problem that the foundation ditch sinks or influence the construction, drainage device's drainage effect has effectively been promoted.
Optionally, the water collecting pipe is fixedly connected with a filter screen at the water passing hole.
Through adopting above-mentioned technical scheme, set up the filter in water passing hole department and can avoid debris and grit in the foundation ditch to get into in the collector pipe to avoid the collector pipe to be blockked up, be favorable to the closing plate to keep smooth slip in the collector pipe, effectively promoted drainage device's operational reliability.
Optionally, the porous plate is provided with geotextile, and a gravel filter layer is laid on the geotextile.
Through adopting above-mentioned technical scheme, because the ponding of foundation ditch bottom contains a large amount of silt and debris, consequently lay rubble water filtering layer on the porous disk, can filter the ponding of foundation ditch bottom to prevent that silt and debris from getting into in the sump pit, and then avoid the water pump by the problem of silt and debris jam, effectively promoted drainage device's operational reliability.
Optionally, a reinforcing rib is embedded in the water collecting platform, and one end of the reinforcing rib far away from the bottom of the foundation pit is fixedly connected with the water permeable plate.
Through adopting above-mentioned technical scheme, set up the bearing capacity that the strengthening rib can strengthen the porous disk to avoid the problem that the porous disk takes place to warp or sink in the work progress, after the construction was accomplished, to the intraductal pouring concrete of catchmenting in order to backfill the sump pit, thereby bury the strengthening rib in the concrete underground, be favorable to keeping the steadiness of foundation ditch bottom.
In a second aspect, the present application provides a construction method for a foundation pit drainage device, which uses the above-mentioned detection equipment for a moisture-sensitive asphalt mixture, and comprises the following steps:
the method comprises the following steps: adopting concrete to pour a water collecting platform at the bottom of the foundation pit;
step two: installing supporting plates and a water collecting pipe on the side wall of the foundation pit, communicating the supporting plates with the water collecting pipe, installing a drainage device in the water collecting pipe, and installing a water permeable plate on a water collecting platform;
step three: after the construction is finished, the supporting and protecting plate is detached, the drainage assembly is taken out of the water collecting pipe, and then concrete is poured into the water collecting well through the water collecting pipe.
Through adopting above-mentioned technical scheme, foretell structure not only can play the supporting role to the foundation ditch, prevents the foundation ditch slump and sinks to can also discharge fast the groundwater of foundation ditch lateral wall and the ponding of foundation ditch bottom, just installed drainage device when installation supporting device, effectively shortened construction cycle, be favorable to improving the efficiency of construction, and can discharge the ponding in the little sump of foundation ditch bottom and the ditch, effectively promoted drainage device's drainage effect.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the drainage device, the water permeable plate and the water collection platform with the inclined surface are arranged, when a small pit or a ditch exists at the bottom of the foundation pit, accumulated water in the small pit and the ditch leaks to the water collection platform through the water permeable plate, then the accumulated water flows into the water collection well through the upper surface of the inclined water collection platform, and then the accumulated water collected in the water collection well is discharged by utilizing the drainage assembly, so that the bottom of the foundation pit is kept dry, the problem that the foundation pit collapses or construction is influenced due to long-time accumulated water at the bottom of the foundation pit is solved, and the drainage effect of the drainage device is effectively improved;
2. according to the drainage device, the supporting and protecting plate with the hollow inner part is arranged and communicated with the water collecting pipe, a plurality of seepage holes are formed in one side, close to the side wall of the foundation pit, of the supporting and protecting plate, when water seeps into the inner wall of the foundation pit, the leaked underground water flows into the supporting and protecting plate through the seepage holes, the underground water collected in the supporting and protecting plate flows into the water collecting pipe and is discharged, the supporting and protecting plate can prevent the side wall of the foundation pit from sinking, the underground water on the side wall of the foundation pit can be collected and discharged, the drainage device is installed while the supporting and protecting device is installed, the construction period is effectively shortened, the construction efficiency is favorably improved, the leaked underground water in the foundation pit can be discharged, and the drainage effect of the drainage device is effectively improved;
3. the utility model provides a drainage device includes closing plate and water pump, and the closing plate is porous buoyancy board, and foretell drainage device can be according to how much change water pump's position of ponding in the foundation ditch to can discharge the technique in the foundation ditch fast, avoid long time ponding in the foundation ditch to lead to the foundation ditch to sink or influence the problem of construction, effectively promoted drainage device's drainage effect.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a cross-sectional view of an embodiment of the present application;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic diagram of an exploded structure of a backup plate according to an embodiment of the present application;
fig. 5 is an enlarged view of portion B of fig. 4.
Reference numerals are as follows: 1. a water collection table; 11. reinforcing ribs; 12. a water collecting well; 2. a water permeable plate; 21. water permeable holes; 22. geotextile; 23. a macadam filtration layer; 3. supporting a guard plate; 31. a first splice plate; 311. a drain pipe; 312. a water seepage hole; 313. water-absorbing cloth; 32. a second splice plate; 321. a drain hole; 4. a water collection pipe; 41. supporting the reinforcing steel bars; 42. water passing holes; 421. a filter screen; 5. a drainage assembly; 51. a sealing plate; 52. a water pump; 521. a water outlet pipe; 6. and (6) foundation pit.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses foundation ditch drainage device. Referring to fig. 1 and 2, a drainage apparatus for a foundation pit 6 includes a water collection platform 1, a water permeable plate 2, a support plate 3, a water collection pipe 4, and a drainage assembly 5.
Referring to fig. 1 and 2, the water collection platform 1 is poured on the bottom of a foundation pit 6 by concrete, the upper surface of the water collection platform 1 is obliquely and downwards arranged along the center towards the direction close to the edge of the foundation pit 6, the edge of the water collection platform 1 and the bottom of the foundation pit 6 are positioned on the same plane, the whole water collection platform 1 is in a quadrangular pyramid shape, and a plurality of reinforcing ribs 11 which are uniformly distributed are embedded in the water collection platform 1 in advance.
Referring to fig. 1, 2 and 3, porous disk 2 is located collection platform 1 top, and porous disk 2 and strengthening rib 11 keep away from collection platform 1's one end fixed connection, form sump pit 12 between porous disk 2 and the collection platform 1 upper surface, set up a plurality of evenly distributed's the hole 21 of permeating water on the porous disk 2, the hole 21 of permeating water communicates with sump pit 12, has laid one deck geotechnological cloth 22 on the porous disk 2, and geotechnological cloth 22 upper berth is equipped with rubble filter layer 23. When some small water pits or ditches exist in the foundation pit 6, accumulated water in the small water pits or ditches enters the gravel filtering layer 23 to be filtered, then leaks to the water collecting platform 1 through the water permeable plate 2, and then flows into the water collecting well 12 through the upper surface of the inclined water collecting platform 1.
Referring to fig. 2, 4 and 5, the supporting plate 3 includes a plurality of first splicing plates 31 and a plurality of second splicing plates 32, the first splicing plates 31 and the second splicing plates 32 are arranged in a hollow manner, two vertical opposite side walls of the first splicing plates 31 and the side wall of the foundation pit 6 are respectively welded with a drain pipe 311, the drain pipe 311 is communicated with the inside of the first splicing plates 31, two vertical opposite side walls of the second splicing plates 32 and the side wall of the foundation pit 6 are respectively provided with a drain hole 321, the first splicing plates 31 are inserted into the drain holes 321 of the second splicing plates 32 through the drain pipes 311, and the two first splicing plates 31 are connected through one second splicing plate 32.
Referring to fig. 2, 4 and 5, a plurality of uniformly distributed water seepage holes 312 are formed in one side of each of the first splicing plate 31 and the second splicing plate 32 close to the side wall of the foundation pit 6, water absorbing cloth 313 is fixedly connected to the inner wall of each water seepage hole 312 through screws, and the water absorbing cloth 313 shields the water seepage holes 312. The water absorption cloth 313 can guide groundwater in the side wall of the foundation pit 6 to flow into the supporting plate 3 to be collected, and the water absorption cloth 313 can also prevent soil on the side wall of the foundation pit 6 from falling into the supporting plate 3.
Referring to fig. 2, fig. 3 and fig. 4, the collector pipe 4 is equipped with a plurality ofly, collector pipe 4 is equipped with four in this embodiment, the quantity of collector pipe 4 can be selected at the shape according to foundation ditch 6 in other embodiments, and do not regard as the restriction to this application, four collector pipe 4 are vertical respectively to be set up in the edge of foundation ditch 6, the welding of collector pipe 4 one end has a plurality of support bars 41, 4 one end of collector pipe is pegged graft in the ground through support bars 41, the welding of collector pipe 4 has the one end and the sump pit 12 intercommunication of support bars 41, the inside drain pipe 311 intercommunication with the first splice plate 31 that is located foundation ditch 6 edge of collector pipe 4. The accumulated water collected in the first splice plate 31 and the second splice plate 32 flows into the water collecting pipe 4 and then is collected into the water collecting well 12.
Referring to fig. 2, 3 and 4, four drainage assemblies 5 are provided, each drainage assembly 5 is located in one water collecting pipe 4, each drainage assembly 5 includes a sealing plate 51 and a water pump 52, the sealing plate 51 is a porous buoyancy plate, the sealing plate 51 is slidably connected in the water collecting pipe 4, the water pump 52 is located on one side of the sealing plate 51 close to the bottom of the foundation pit 6, a housing of the water pump 52 is fixedly connected with the sealing plate 51 by screws, a water outlet pipe 521 is fixedly communicated with a water outlet of the water pump 52, and one end 521 of the water outlet pipe passes through the sealing plate 51 and extends out of the water collecting pipe 4.
Referring to fig. 2, 3 and 4, the water hole 42 has been seted up towards one side of foundation ditch 6 inside to the lateral wall of collector pipe 4, and the level that crosses water hole 42 is higher than the level of porous plate 2, and the difference in height between the centre of a circle of crossing water hole 42 and the porous plate 2 upper surface is 20cm, and collector pipe 4 adopts screw fixedly connected with filter screen 421 in water hole 42 department.
The implementation principle of a foundation pit drainage device of the embodiment of the application is as follows: when rainfall is large in rainy days, a large amount of rainwater is collected at the bottom of the foundation pit 6, when the water level in the foundation pit 6 rises to be over the water through holes 42, accumulated water in the foundation pit 6 flows into the water collecting pipe 4 and the water collecting well 12 through the water through holes 42, the filter screen 421 at the water through holes 42 can prevent sundries and gravels in the foundation pit 6 from entering the water collecting pipe 4, after the accumulated water flows into the water collecting pipe 4, the water level in the water collecting pipe 4 rises to drive the sealing plate 51 to rise along the water collecting pipe 4, the sealing plate 51 rises to drive the water pump 52 to rise, so that the water pump 52 is far away from the water collecting well 12, the water pump 52 directly discharges the accumulated water in the foundation pit 6 through the water through holes 42 at the moment, the drainage efficiency is high, the phenomenon that the accumulated water soaks the foundation pit 6 for a long time is avoided, and the risk of collapse of the foundation pit 6 is reduced.
After the water level in the foundation pit 6 drops to be lower than the water through holes 42, residual accumulated water in the foundation pit 6 enters the water collecting well 12 through the gravel filtering layer 23 and the water permeable plate 2, and the sealing plate 51 drops along with the reduction of the water level in the water collecting pipe 4, so that the water pump 52 is driven to move into the water collecting well 12, and the accumulated water in the water collecting well 12 can be discharged. The ponding in the little sump of foundation ditch 6 bottom and the ditch is filtered through rubble filter layer 23 after through porous disc 2 seepage to collection water platform 1, then in ponding flows into sump pit 12 through the collection water platform 1 upper surface of slope, then water pump 52 can be with the ponding discharge in the sump pit 12.
When the side wall of the foundation pit 6 is leaked with groundwater, the leaked groundwater is guided by the water absorption cloth 313 to flow into the support shield plate 3, and then the groundwater collected in the support shield plate 3 flows into the water collection pipe 4 and is discharged by the water pump 52.
The drainage device can automatically adjust the drainage mode according to the accumulated water in the foundation pit 6, so that the accumulated water in the foundation pit 6 can be quickly drained, the bottom of the foundation pit 6 is kept dry, and the problem that the foundation pit 6 sinks or construction is influenced due to the long-time accumulated water at the bottom of the foundation pit 6 is solved. And can also discharge the ponding in remaining little sump and the ditch of foundation ditch 6 bottoms, also can discharge the groundwater of 6 lateral walls seepage in foundation ditch simultaneously, have better drainage effect.
The embodiment of the application also discloses a construction method of the foundation pit drainage device, which comprises the following steps:
the method comprises the following steps: adopting concrete to pour the water collecting platform 1 at the bottom of the foundation pit 6, and embedding reinforcing ribs 11 in the water collecting platform 1;
step two: installing a supporting and protecting plate 3 on the side wall of the foundation pit 6 to enable the water seepage holes 312 to be in contact with the side wall of the foundation pit 6, then installing a drainage device in the water collecting pipe 4, vertically arranging the water collecting pipe 4 at the corner of the foundation pit 6, and welding and communicating a drainage pipe 311 of the supporting and protecting plate 3 with the inside of the water collecting pipe 4; then the water permeable plate 2 and one end of the reinforcing rib 11 far away from the bottom of the foundation pit 6 are welded, then the geotextile 22 is laid on the water permeable plate 2, and then the gravel filtering layer 23 is laid on the geotextile 22.
Step three: after the construction is finished, the supporting and protecting plate 3 is detached, the drainage assembly 5 is taken out of the water collecting pipe 4, and then concrete is poured into the water collecting well 12 through the water collecting pipe 4 until the water collecting well 12 is backfilled.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (6)
1. The utility model provides a foundation ditch drainage device which characterized in that: the rainwater drainage system comprises a water collection platform (1), a permeable plate (2), water collection pipes (4) and a drainage assembly (5), wherein the water collection platform (1) is located at the bottom of a foundation pit (6), the upper surface of the water collection platform (1) is obliquely and downwards arranged along the center towards the direction close to the edge of the foundation pit (6), the permeable plate (2) is located above the water collection platform (1), a water collection well (12) is formed between the permeable plate (2) and the water collection platform (1), a plurality of permeable holes (21) are formed in the permeable plate (2), the permeable holes (21) are communicated with the water collection well (12), the water collection pipes (4) are provided in a plurality, the water collection pipes (4) are vertically arranged at the edge of the foundation pit (6) respectively, one end of each water collection pipe (4) is communicated with the water collection well (12), the drainage assembly (5) is provided in a plurality, each drainage assembly (5) is located in one water collection pipe (4) respectively, and the drainage assembly (5) is used for draining rainwater in the water collection well (12);
the drainage assembly (5) comprises a sealing plate (51) and a water pump (52), the sealing plate (51) is located in the water collecting pipe (4), the water pump (52) is located on one side, close to the bottom of the foundation pit (6), of the sealing plate (51), the water pump (52) is fixedly connected with the sealing plate (51), a water outlet pipe (521) is connected to the water pump (52), and the water outlet pipe (521) extends out of the water collecting pipe (4);
a water passing hole (42) is formed in the water collecting pipe (4), the horizontal height of the water passing hole (42) is higher than that of the water permeable plate (2), the sealing plate (51) is axially connected in the water collecting pipe (4) in a sliding manner, and the sealing plate (51) is a porous buoyancy plate; the water collecting pipe (4) is fixedly connected with a filter screen at the water through hole (42).
2. A foundation pit drainage device according to claim 1, wherein: still including installing a backplate (3) on foundation ditch (6) lateral wall, prop up the inside hollow setting of backplate (3), prop up backplate (3) and be close to a plurality of infiltration holes (312) have been seted up to one side of foundation ditch (6) lateral wall, fixedly connected with is used for the cloth (313) that absorb water sealed with infiltration hole (312) on propping up backplate (3).
3. A foundation pit drainage arrangement according to claim 2, characterized in that: the supporting and protecting plate (3) comprises a plurality of first splicing plates (31) and a plurality of second splicing plates (32), the first splicing plates (31) and the second splicing plates (32) are detachably connected and are mutually communicated, and the insides of the first splicing plates (31) at the corners of the foundation pit (6) are communicated with the water collecting pipe (4).
4. A foundation pit drainage device according to claim 1, wherein: the permeable plate (2) is provided with geotextile (22), and a gravel filter layer (23) is laid on the geotextile (22).
5. A foundation pit drainage arrangement according to claim 1, characterized in that: reinforcing ribs (11) are embedded in the water collecting platform (1), and one ends, far away from the reinforcing ribs (11) and at the bottom of the foundation pit (6), of the reinforcing ribs are fixedly connected with the water permeable plate (2).
6. A method of constructing a foundation pit drainage system according to claim 3, wherein: the method comprises the following steps:
the method comprises the following steps: adopting concrete to pour the water collecting platform (1) at the bottom of the foundation pit (6);
step two: installing supporting and protecting plates (3) and water collecting pipes (4) on the side wall of a foundation pit (6) to enable the supporting and protecting plates (3) and the water collecting pipes (4) to be communicated, installing a drainage device in the water collecting pipes (4), and installing water permeable plates (2) on a water collecting platform (1);
step three: after construction is completed, the supporting and protecting plate (3) is detached, the drainage assembly (5) is taken out of the water collecting pipe (4), and then concrete is poured into the water collecting well (12) through the water collecting pipe (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111463805.6A CN114032937B (en) | 2021-12-02 | 2021-12-02 | Foundation pit drainage device and construction method thereof |
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| CN202111463805.6A CN114032937B (en) | 2021-12-02 | 2021-12-02 | Foundation pit drainage device and construction method thereof |
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| CN114561960A (en) * | 2022-03-22 | 2022-05-31 | 广州宁致建筑工程有限公司 | Protective structure for building deep foundation pit construction and protective method thereof |
| CN118166808B (en) * | 2024-05-13 | 2024-07-09 | 四川省建筑科学研究院有限公司 | Foundation pit drainage device and drainage method |
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| JP3694735B2 (en) * | 2001-04-25 | 2005-09-14 | 忠平 直哉 | Underground seepage drainage structure and construction method |
| CN106638641B (en) * | 2016-12-16 | 2018-11-09 | 中建四局第一建筑工程有限公司 | Base pit dewatering well structure and its construction method |
| CN209741880U (en) * | 2019-03-21 | 2019-12-06 | 河北万方中天科技有限公司 | Deep foundation pit drainage structure |
| CN110093931B (en) * | 2019-04-28 | 2020-11-06 | 四川航天建筑工程有限公司 | Civil construction foundation pit drainage structure and construction method thereof |
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| CN114032937A (en) | 2022-02-11 |
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