CN114351737A - Foundation pit drainage device and method thereof - Google Patents
Foundation pit drainage device and method thereof Download PDFInfo
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- CN114351737A CN114351737A CN202111589695.8A CN202111589695A CN114351737A CN 114351737 A CN114351737 A CN 114351737A CN 202111589695 A CN202111589695 A CN 202111589695A CN 114351737 A CN114351737 A CN 114351737A
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- drainage
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- sliding
- foundation pit
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- 238000000034 method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000004140 cleaning Methods 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 241000883990 Flabellum Species 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 230000002337 anti-port Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Abstract
The invention discloses a foundation pit drainage device, which comprises: the cleaning device comprises an L-shaped plate and a plurality of through holes formed in the L-shaped plate, wherein one end of the L-shaped plate is connected with a sliding plate in a sliding mode, a drainage component comprises a water pump, a drainage pipe and a filter screen cylinder, the water pump is fixedly connected to the L-shaped plate, the drainage pipe is fixedly communicated with the water pump, the filter screen cylinder is fixedly communicated with the bottom end of the drainage pipe, and a clamping component comprises a fixed plate, a sliding block, a rectangular block and a clamping block.
Description
Technical Field
The invention relates to the technical field of drainage equipment, in particular to a foundation pit drainage device and a foundation pit drainage method.
Background
The drainage type of the foundation pit comprises open trench drainage, well point dewatering and blind trench drainage, wherein the open trench drainage is to collect the water flowing into the trench or underground in the foundation pit into a water collecting well and then pump the water away.
Along with the rapid development of capital construction, need excavate more foundation ditch at the building initial stage, utilize concrete reinforcement to fill and build as the ground, often accompany groundwater in the foundation ditch excavation and ooze, need carry out the drainage to in the foundation ditch, but current drainage equipment is because of not having the automatic clearance structure on the pipeline filter screen, consequently when the drainage, because the residue of the various waste materials in the foundation ditch leads to the jam of pipeline easily, causes drainage inefficiency.
Disclosure of Invention
The invention aims to solve the following defects in the prior art, and provides a foundation pit drainage device and a method thereof, wherein the existing drainage equipment does not have an automatic cleaning structure for a pipeline filter screen, so that during drainage, the pipeline is easily blocked due to residues of various waste materials in a foundation pit, and the drainage efficiency is low.
In order to achieve the purpose, the invention adopts the following technical scheme:
a foundation pit drainage device, the foundation pit drainage device includes:
the L-shaped plate and the plurality of through holes formed in the L-shaped plate are connected, and one end of the L-shaped plate is connected with a sliding plate in a sliding mode;
the drainage component comprises a water pump, a drainage pipe and a filter screen cylinder, the water pump is fixedly connected to the L-shaped plate, the drainage pipe is fixedly communicated with the water pump, and the filter screen cylinder is fixedly communicated with the bottom end of the drainage pipe;
the clamping component comprises a fixed plate, sliding blocks, rectangular blocks and clamping blocks, the fixed plate is fixedly connected to the L-shaped plate, a sliding groove is formed in the fixed plate, the two sliding blocks are respectively connected to two ends of the sliding groove in a sliding mode, the rectangular blocks are fixedly connected to the sliding blocks, the two clamping blocks are respectively fixedly connected to the rectangular blocks, and the clamping component is used for clamping and fixing the drain pipe;
the cleaning component comprises a cleaning ring and vertical plates, the two vertical plates are respectively connected to two sides of the sliding plate in a sliding mode, the cleaning ring is fixedly connected between the two vertical plates, and the cleaning component is used for cleaning the outer surface of the filter screen cylinder;
the driving part comprises an installation cylinder, cams, fan blades and a rotating shaft, wherein the installation cylinder is fixedly communicated with the drain pipe, the rotating shaft transversely penetrates through the installation cylinder, the fan blades are in an annular array in the rotating shaft, and the cams are fixedly connected to two ends of the rotating shaft respectively.
Preferably, the drainage component further comprises a servo motor and a placing plate, the placing plate is fixedly connected to the L-shaped plate, the servo motor is fixedly connected to the placing plate, and a driving end of the servo motor is fixedly connected to the inside of the water pump.
Preferably, the clamping part further comprises a screw rod, a thread cylinder and inclined rods, the thread cylinder is fixedly connected to the L-shaped plate, the screw rod is in threaded connection with the inside of the thread cylinder, and the two inclined rods are respectively installed at the bottom end of the screw rod and between the rectangular blocks.
Preferably, two the clamp splice all is the arc setting, the carousel of being convenient for to rotate is connected with to lead screw top fixedly.
Preferably, the cleaning part further comprises transverse plates, springs and square plates, wherein the transverse plates are fixedly connected to the vertical plates respectively, the square plates are fixedly connected to the sliding plates respectively, and the springs are fixedly connected to the square plates and the transverse plates respectively.
Preferably, the driving part further comprises sealing rings, and the two sealing rings are respectively installed between the rotating shaft and the installation cylinder.
Preferably, two be fixedly connected with stopper on the riser respectively, the stopper with cam sliding connection.
Preferably, the cleaning ring is arranged in an annular shape and is connected to the outer surface of the filter screen cylinder in a sliding manner.
A foundation pit drainage method comprises the following steps: at first this device is placed on the foundation ditch inside wall, wherein the one end L template of fixed servo motor is placed subaerial, pass the through-hole through external screw and fix the L template subaerial, then the filter screen section of thick bamboo and slide downstream to the foundation ditch bottom under the effect of self gravity, servo motor connects external power source simultaneously, it is rotatory to drive the inside flabellum of water pump under servo motor drive, water in the foundation ditch has the adsorption affinity, make the water in the foundation ditch discharge through the drain pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. when the lead screw rebound, stimulate two rectangular blocks through the down tube respectively and remove between two parties, because two clamp blocks are fixed respectively on the rectangular block, consequently can carry out centre gripping, fixed with the drain pipe that is located the piece when two clamp blocks remove between two parties to avoid the drain pipe to produce skew or swing when the drainage, cause the junction of drain pipe and water pump to appear the disconnection.
2. The pivot is rotatory moving under the impact of water, extrudees the stopper downwards when the cam is rotatory along with the pivot, along with the downstream of stopper and riser, drives clearance ring downstream, because be equipped with the clearance brush on the clearance intra-annular wall, consequently can strike off filter screen cylinder outside surface's residue, mud bits when clearance ring downstream, reaches the effect that has the clearance to filter screen cylinder surface at the drainage.
Drawings
Fig. 1 is a schematic front structural view of a foundation pit drainage device provided by the invention;
FIG. 2 is a schematic view of a portion A of FIG. 1;
FIG. 3 is a schematic view of a portion of B in FIG. 1;
fig. 4 is a schematic structural view of a fan blade of the foundation pit drainage device according to the present invention.
In the figure: 1L template, 2 through-holes, 3 lead screws, 4 thread cylinders, 5 sliding plates, 6 filter screen cylinders, 7 cleaning rings, 8 lantern rings, 9 clamping blocks, 10 fixing plates, 11 water pumps, 12 drain pipes, 13 rotating discs, 14 servo motors, 15 placing plates, 16 sliding blocks, 17 rectangular blocks, 18 inclined rods, 19 sealing rings, 20 mounting cylinders, 21 transverse plates, 22 springs, 23 square plates, 24 vertical plates, 25 limiting blocks, 26 cams, 27 fan blades and 28 rotating shafts.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a foundation pit drainage apparatus, the foundation pit drainage apparatus comprising:
a plurality of through-holes 2 of seting up on L template 1 and the L template 1, place this device on the foundation ditch inside wall, wherein one end L template 1 of fixed servo motor 14 is placed subaerial, it fixes L template 1 subaerial to pass through-hole 2 through external screw, and the foundation ditch lateral wall is hugged closely to the 1 other end of L template and is fixed, L template 1 wherein one end sliding connection has slide 5, after 1 installation is fixed to L template, filter screen cylinder 6 and slide 5 move down to the foundation ditch bottom under the effect of self gravity, be convenient for draw water the foundation ditch bottom, the drainage.
Drainage component, drainage component includes water pump 11, drain pipe 12, filter screen cylinder 6, water pump 11 fixed connection is on L template 1, the fixed intercommunication of drain pipe 12 is on water pump 11, the fixed intercommunication of filter screen cylinder 6 is in drain pipe 12 bottom, filter screen cylinder 6 can be isolated with the residue in the foundation ditch, avoid when the drainage rubbish gets into in drain pipe 12 and the water pump 11, cause the damage, drainage component still includes servo motor 14, place board 15 fixed connection on L template 1, servo motor 14 fixed connection is on placing board 15, servo motor 14 drive end fixed connection is in water pump 11, servo motor 14 connects external power supply, it is rotatory to drive the inside flabellum of water pump 11 under servo motor 14 drives, have the adsorption affinity to the water in the foundation ditch, make the water in the foundation ditch discharge through drain pipe 12.
The clamping component comprises a fixed plate 10, sliders 16, rectangular blocks 17 and clamping blocks 9, the fixed plate 10 is fixedly connected to an L-shaped plate 1, a sliding groove is formed in the fixed plate 10, the two sliders 16 are respectively connected to two ends of the sliding groove in a sliding mode, the rectangular blocks 17 are fixedly connected to the sliders 16, the two clamping blocks 9 are respectively fixedly connected to the rectangular blocks 17, the two clamping blocks 9 are both arranged in an arc shape, a rotary table 13 convenient to rotate is fixedly connected to the top end of a screw rod 3, the clamping component further comprises the screw rod 3, a threaded cylinder 4 and inclined rods 18, the threaded cylinder 4 is fixedly connected to the L-shaped plate 1, the screw rod 3 is in threaded connection with the threaded cylinder 4, the two inclined rods 18 are respectively installed between the bottom end of the screw rod 3 and the rectangular blocks 17, the screw rod 3 moves upwards in the threaded cylinder 4 when rotating, the two rectangular blocks 17 are respectively pulled to move centrally through the inclined rods 18, and the two clamping blocks 9 are respectively fixed to the rectangular blocks 17, therefore, the drain pipe 12 positioned in the middle can be clamped and fixed when the two clamping blocks 9 move in the middle, and the clamping part is used for clamping and fixing the drain pipe 12.
The cleaning component comprises a cleaning ring 7, vertical plates 24, the two vertical plates 24 are respectively connected to two sides of the sliding plate 5 in a sliding manner, the cleaning ring 7 is fixedly connected between the two vertical plates 24, the cleaning ring 7 is arranged in an annular manner and is connected to the outer surface of the filter screen cylinder 6 in a sliding manner, a cleaning brush is arranged on the inner side wall of the cleaning ring 7, so that the outer surface of the filter screen cylinder 6 can be cleaned when the cleaning ring 7 moves up and down, the filter screen cylinder 6 is prevented from being blocked during drainage, the cleaning component also comprises transverse plates 21, springs 22 and square plates 23, the two transverse plates 21 are respectively and fixedly connected to the vertical plates 24, the two square plates 23 are respectively and fixedly connected to the sliding plate 5, the two springs 22 are respectively and fixedly connected between the square plates 23 and the transverse plates 21, when the cam 26 is far away from the limiting block 25, the limiting block 25 and the cleaning ring 7 move upwards under the elasticity of the springs 22, so that under the continuous rotation of the rotating shaft 28, the cleaning ring 7 can be caused to reciprocate up and down through the cam 26, and the cleaning component is used for cleaning the outer surface of the filter screen cylinder 6;
the driving part comprises a mounting cylinder 20, a cam 26, fan blades 27 and a rotating shaft 28, the mounting cylinder 20 is fixedly communicated with the drain pipe 12, the rotating shaft 28 transversely penetrates through the mounting cylinder 20, the fan blades 27 are annularly arrayed on the rotating shaft 28, the two cams 26 are respectively and fixedly connected with two ends of the rotating shaft 28, the two risers 24 are respectively and fixedly connected with a limiting block 25, the limiting block 25 is in sliding connection with the cam 26, water in the drain pipe 12 can impact the fan blades 27, so that the fan blades 27 rotate under the impact of the water on the rotating shaft 28, because the two ends of the rotating shaft 28 are respectively and fixedly connected with the cam 26, the limiting block 25 and the cleaning ring 7 are downwards extruded when the cam 26 rotates along with the rotating shaft 28, so that the cleaning ring 7 can scrape residues attached to the outer surface of the filter screen cylinder 6, the driving part also comprises sealing rings 19, the two sealing rings 19 are respectively arranged between the rotating shaft 28 and the mounting cylinder 20, the sealing ring 19 is used for sealing the joint of the mounting cylinder 20 and the rotating shaft 28, and water leakage during water drainage is avoided.
A foundation pit drainage method comprises the following steps: at first this device is placed on the foundation ditch inside wall, wherein the one end L template 1 of fixed servo motor 14 is placed subaerial, pass through-hole 2 through external screw and fix L template 1 subaerial, then filter screen cylinder 6 and slide 5 downstream to the foundation ditch bottom under the effect of self gravity, servo motor 14 connects external power source simultaneously, it is rotatory to drive the inside flabellum 27 of water pump 11 under servo motor 14 drives, water in the foundation ditch has the adsorption affinity, make the water in the foundation ditch discharge through drain pipe 12.
In the invention, when in use, the L-shaped plate 1 is firstly placed on the inner side wall of a foundation pit, wherein the L-shaped plate 1 at one end of the fixed servo motor 14 is placed on the ground, an external screw penetrates through the through hole 2 to fix the L-shaped plate 1 on the ground, then the filter screen cylinder 6 and the sliding plate 5 move downwards to the bottom of the foundation pit under the action of self gravity, at the moment, the rotary table 13 is rotated to drive the screw rod 3 to rotate and move upwards in the threaded cylinder 4, when the screw rod 3 moves upwards, the two rectangular blocks 17 are respectively pulled to move centrally through the inclined rod 18, and because the two clamping blocks 9 are respectively fixed on the rectangular blocks 17, the drainage pipe 12 positioned in the central part can be clamped and fixed when the two clamping blocks 9 move centrally, so that the drainage pipe 12 is prevented from shifting or swinging during drainage, and the connection between the drainage pipe 12 and the water pump 11 is prevented from being disconnected.
Meanwhile, the servo motor 14 is connected with an external power supply, the fan blade 27 inside the water pump 11 is driven to rotate by the servo motor 14, the water in the foundation pit has adsorption force, when the water in the foundation pit is discharged through the drain pipe 12, the water in the drain pipe 12 can impact the fan blade 27, the fan blade 27 rotates under the impact of the water on the movable rotating shaft 28, because the two ends of the rotating shaft 28 are respectively and fixedly connected with the cam 26, the cam 26 downwards extrudes the limiting block 25 when rotating along with the rotating shaft 28, the limiting block 25 and the vertical plate 24 downwards move to drive the cleaning ring 7 to downwards move, meanwhile, the spring 22 is compressed, because the cleaning brush is arranged on the inner side wall of the cleaning ring 7, the residue and mud on the outer surface of the filter screen cylinder 6 can be scraped when the cleaning ring 7 downwards moves, when the cam 26 is far away from the limiting block 25, the limiting block 25 and the cleaning ring 7 upwards move under the elasticity of the spring 22, so that the cam 26 can cause the cleaning ring 7 to reciprocate up and down under the continuous rotation of the rotating shaft 28, thereby achieving the effect of cleaning the outer surface of the filter screen cylinder 6 during the water drainage.
When the drainage is accomplished, at first get the screw off, pull out the foundation ditch with L template 1, then the antiport carousel 13 for lead screw 3 promotes two rectangular blocks 17 respectively through down tube 18 when antiport keeps away from each other, makes clamp splice 9 no longer have the fixed effect of centre gripping to drain pipe 12, contracts simultaneously in slider 5 to the L template 1, reaches receiving and releasing whole device, portable.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a foundation ditch drainage device which characterized in that, foundation ditch drainage device includes:
the L-shaped plate (1) and the L-shaped plate (1) are provided with a plurality of through holes (2), and one end of the L-shaped plate (1) is connected with a sliding plate (5) in a sliding manner;
the drainage component comprises a water pump (11), a drainage pipe (12) and a filter screen cylinder (6), the water pump (11) is fixedly connected to the L-shaped plate (1), the drainage pipe (12) is fixedly communicated with the water pump (11), and the filter screen cylinder (6) is fixedly communicated with the bottom end of the drainage pipe (12);
the clamping component comprises a fixing plate (10), sliding blocks (16), rectangular blocks (17) and clamping blocks (9), the fixing plate (10) is fixedly connected to the L-shaped plate (1), a sliding groove is formed in the fixing plate (10), the two sliding blocks (16) are respectively connected to two ends of the sliding groove in a sliding mode, the rectangular blocks (17) are fixedly connected to the sliding blocks (16), the two clamping blocks (9) are respectively fixedly connected to the rectangular blocks (17), and the clamping component is used for clamping and fixing the drain pipe (12);
the cleaning component comprises a cleaning ring (7), vertical plates (24), the two vertical plates (24) are respectively connected to two sides of the sliding plate (5) in a sliding mode, the cleaning ring (7) is fixedly connected between the two vertical plates (24), and the cleaning component is used for cleaning the outer surface of the filter screen cylinder (6);
the drive assembly, drive assembly is including installation section of thick bamboo (20), cam (26), flabellum (27), pivot (28), installation section of thick bamboo (20) fixed intercommunication is in on drain pipe (12), pivot (28) are transversely to run through installation section of thick bamboo (20), it is a plurality of flabellum (27) are the annular array and are in on pivot (28), two cam (26) fixed connection respectively are in pivot (28) both ends.
2. A foundation pit drainage device according to claim 1, characterized in that the drainage component further comprises a servo motor (14) and a placing plate (15), the placing plate (15) is fixedly connected to the L-shaped plate (1), the servo motor (14) is fixedly connected to the placing plate (15), and a driving end of the servo motor (14) is fixedly connected to the inside of the water pump (11).
3. The foundation pit drainage device according to claim 1, wherein the clamping component further comprises a screw rod (3), a threaded cylinder (4) and inclined rods (18), the threaded cylinder (4) is fixedly connected to the L-shaped plate (1), the screw rod (3) is screwed in the threaded cylinder (4), and the two inclined rods (18) are respectively installed between the bottom end of the screw rod (3) and the rectangular block (17).
4. A foundation pit drainage device according to claim 3, wherein the two clamping blocks (9) are arc-shaped, and a rotary table (13) convenient to rotate is fixedly connected to the top end of the screw rod (3).
5. The foundation pit drainage device according to claim 1, wherein the cleaning member further comprises a transverse plate (21), springs (22) and square plates (23), the two transverse plates (21) are respectively and fixedly connected to the vertical plate (24), the two square plates (23) are respectively and fixedly connected to the sliding plate (5), and the two springs (22) are respectively and fixedly connected between the square plates (23) and the transverse plates (21).
6. A foundation pit drainage arrangement according to claim 1, wherein the driving means further comprises sealing rings (19), and two sealing rings (19) are respectively mounted between the shaft (28) and the mounting cylinder (20).
7. The foundation pit drainage device according to claim 1, wherein two of the risers (24) are fixedly connected with a limiting block (25), and the limiting block (25) is slidably connected with the cam (26).
8. A foundation pit drainage device according to claim 1, characterized in that the cleaning ring (7) is annular and is slidably connected to the outer surface of the screen cylinder (6).
9. A method of foundation pit drainage according to any one of claims 1 to 8 including the steps of: at first this device is placed on the foundation ditch inside wall, wherein one end L template (1) of fixed servo motor (14) is placed subaerial, pass through-hole (2) through external screw and fix L template (1) subaerial, then filter screen cylinder (6) and slide (5) move down to the foundation ditch bottom under the effect of self gravity, external power source is connected in servo motor (14) simultaneously, it is rotatory to drive the inside flabellum of water pump (11) under servo motor (14) drive, water in the foundation ditch has the adsorption affinity, make the water in the foundation ditch discharge through drain pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111589695.8A CN114351737A (en) | 2021-12-23 | 2021-12-23 | Foundation pit drainage device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111589695.8A CN114351737A (en) | 2021-12-23 | 2021-12-23 | Foundation pit drainage device and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114351737A true CN114351737A (en) | 2022-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111589695.8A Pending CN114351737A (en) | 2021-12-23 | 2021-12-23 | Foundation pit drainage device and method thereof |
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| Country | Link |
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| CN (1) | CN114351737A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116464083A (en) * | 2023-03-31 | 2023-07-21 | 江苏发安建设工程有限公司 | Deep foundation pit drainage structure of construction site |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3033341A1 (en) * | 2015-03-05 | 2016-09-09 | Hydro Geotechnique | DEVICE FOR DRAINING DEEP GROUND |
| CN111779009A (en) * | 2020-06-21 | 2020-10-16 | 蒋金英 | Deep and shallow well foundation pit dewatering system of large foundation pit and dewatering method thereof |
| CN212408794U (en) * | 2020-05-28 | 2021-01-26 | 绍兴市威可多电器有限公司 | Modular range hood |
| CN213682178U (en) * | 2020-11-06 | 2021-07-13 | 浙江均泰建设有限公司 | Foundation ditch trades fills out and uses precipitation device |
| CN214832829U (en) * | 2021-07-17 | 2021-11-23 | 南京桥新建设有限公司 | Tube well precipitation device |
-
2021
- 2021-12-23 CN CN202111589695.8A patent/CN114351737A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3033341A1 (en) * | 2015-03-05 | 2016-09-09 | Hydro Geotechnique | DEVICE FOR DRAINING DEEP GROUND |
| CN212408794U (en) * | 2020-05-28 | 2021-01-26 | 绍兴市威可多电器有限公司 | Modular range hood |
| CN111779009A (en) * | 2020-06-21 | 2020-10-16 | 蒋金英 | Deep and shallow well foundation pit dewatering system of large foundation pit and dewatering method thereof |
| CN213682178U (en) * | 2020-11-06 | 2021-07-13 | 浙江均泰建设有限公司 | Foundation ditch trades fills out and uses precipitation device |
| CN214832829U (en) * | 2021-07-17 | 2021-11-23 | 南京桥新建设有限公司 | Tube well precipitation device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116464083A (en) * | 2023-03-31 | 2023-07-21 | 江苏发安建设工程有限公司 | Deep foundation pit drainage structure of construction site |
| CN116464083B (en) * | 2023-03-31 | 2023-10-31 | 江苏发安建设工程有限公司 | Deep foundation pit drainage structure of construction site |
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Application publication date: 20220415 |