CN111691425B - Water conservancy project foundation pit and pipe well combined light well point dewatering and drainage method - Google Patents
Water conservancy project foundation pit and pipe well combined light well point dewatering and drainage method Download PDFInfo
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- CN111691425B CN111691425B CN202010337368.2A CN202010337368A CN111691425B CN 111691425 B CN111691425 B CN 111691425B CN 202010337368 A CN202010337368 A CN 202010337368A CN 111691425 B CN111691425 B CN 111691425B
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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
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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
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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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Abstract
The invention discloses a hydraulic engineering foundation pit and pipe well combined light well point dewatering and drainage method, which comprises the following specific steps: first-step exploration of a field: firstly, before foundation pit digging construction operation is carried out on water conservancy buildings such as wharfs and dams, guy wire measurement is carried out on the area of a foundation pit to be dug and the dug depth, and meanwhile, the distance between the position of the foundation pit to be dug and an adjacent surface water body is measured. And a second step of soil property data analysis: the receipt obtains the data of the rainfall of the nearly one year in reconnaissance place, the data of earth's surface moisture evaporation capacity and the change data of waiting to dig foundation ditch bottom groundwater level, then carries out arrangement analysis with the data that obtain, then draws data statistics list and foundation ditch construction position geological profile map to the data of the arrangement analysis that obtain, beneficial effect: the well point holes are arranged around the foundation pit to be excavated, so that the working efficiency of water drainage at the well point can be improved.
Description
Technical Field
The invention relates to the field of aquatic product culture design, in particular to a hydraulic engineering foundation pit and pipe well combined light well point dewatering and drainage method.
Background
When being under construction to water conservancy buildings such as pier, dykes and dams, it is nearer to excavate the position of foundation ditch and the position of surface water body intervally, the groundwater level that will lead to the foundation ditch construction position is higher relatively, will cause surface water to permeate to the foundation ditch in, on the other hand causes groundwater level to be higher than the foundation ditch bottom to it is serious to cause ponding in the foundation ditch, influences foundation ditch construction quality, and current foundation ditch precipitation generally adopts sump pit precipitation, and sump pit precipitation is an artifical drainage and drop method. The method has the characteristics of convenient construction, simple tools and low cost, and is most commonly applied to construction sites. Underground diving, construction water and natural precipitation rainwater can be discharged, but the method causes low precipitation working efficiency and increases the labor intensity of workers, so that a method for combining a foundation pit and a pipe well of a hydraulic engineering with light well point precipitation drainage is needed to solve the problems.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a method for lowering and draining water by combining a water conservancy project foundation pit and a pipe well with a light well point, so as to overcome the technical problems in the prior related art.
The technical scheme of the invention is realized as follows:
a hydraulic engineering foundation pit and pipe well combined light well point dewatering and drainage method comprises the following specific steps:
first-step exploration of a field: firstly, before foundation pit digging construction operation is carried out on water conservancy buildings such as wharfs and dams, guy wire measurement is carried out on the area of a foundation pit to be dug and the dug depth, and meanwhile, the distance between the position of the foundation pit to be dug and an adjacent surface water body is measured.
And a second step of soil property data analysis: the receipt obtains the rainfall data of a surveying field in the near year, the surface water evaporation capacity data and the change data of the underground water level at the bottom of the foundation pit to be excavated, then the obtained data is sorted and analyzed, and a data statistical list and a foundation pit construction position geological profile are drawn according to the obtained sorted and analyzed data;
thirdly, site leveling: leveling the position of a foundation pit to be excavated, leveling and excavating convex soil of a field through an excavator, transferring the excavated soil to the concave filling of the field through a construction site transfer car, filling the redundant convex soil to the concave, compacting and flattening the position of the filled soil through a flattening machine, measuring the leveled field through a water level detector, and leveling and adjusting through a bulldozer and the flattening machine;
fourthly, foundation pit well point pipe construction: punching holes are formed by punching, then punching tubes are placed in the punching holes, sand is filled in the punching holes through sand stones, and then the punching holes are sealed through clay.
1) Punching, namely arranging a well point hole on one side of the pipe arranging groove through a drilling machine, and ensuring the verticality of a drill bit of the drilling machine during drilling when the drilling machine drills the well point hole and the excavation accuracy of the well point hole, so that the verticality of the well point hole can be ensured, and the well point pipe can be conveniently inserted; in order to ensure the construction quality, the base of the drilling machine is fixed before drilling, so that the stability and the strength of the drilling machine in the drilling process can be increased, and the bending damage of a drilling bit caused by the sedimentation of the drilling machine per se is avoided;
2) the method comprises the following steps of burying a pipe, after the completion of a well point hole, putting a well point pipe prepared in advance into the well point hole through a hoisting device, and limiting the well point pipe through limiting equipment in the placing process so as to ensure that the well point pipe can vertically enter the well point hole and avoid collapse caused by collision between the well point pipe and the well point hole;
3) filling sand into the well point hole, filling silt between the outer wall of the well point pipe and the well point hole after the well point pipe is placed into the well point hole, ensuring that the well point pipe is in a vertical state in the process of increasing sand filling, fixing and limiting the well point pipe by using lifting equipment and limiting equipment, coaxially placing the well point hole and the well point pipe, and withdrawing the lifting equipment and the limiting equipment after the sand filling is finished;
4) and sealing, filling clay at one end of the top of the well point hole to seal the well point hole between the well point hole and the well point pipe, then putting the water suction pump and the water suction hose into the well point pipe, and pouring quick-setting concrete into the well point pipe to seal the well point pipe after the foundation pit does not need to be lowered.
Arranging the well point pipe dewatering pipelines of the fifth step: after the field is leveled, excavating a pipe drainage groove on the periphery of the field, and arranging a water pumping main pipe, a water suction pipe, a water pumping hose, a water pumping pump, a water drainage pump, a communication pipe, a water drainage pipe and a water drainage groove;
sixthly, anti-seepage groove construction: one side of waiting to dig the foundation ditch is dug out one through the excavator drainage tank, drainage tank's the other end and ponding pond or river are connected, the inside that drainage tank passed through is formed it through concrete and fragment of brick, is equipped with the waterproof layer in drainage tank's inside simultaneously.
The method further includes the specific mode that the well point pipe downcomer pipe is arranged, the pumping main pipe is arranged inside the pipe arrangement groove, the pumping main pipe is provided with a plurality of water suction pipes, one end, far away from the pumping main pipe, of each water suction pipe is provided with the water suction hose, one end, far away from the water suction pipes, of each pumping hose is provided with the water suction pump, the communicating pipe is arranged in the middle of one side of the pumping main pipe, one end, far away from the pumping main pipe, of each communicating pipe is connected with one end of the drainage pump, and the other end, far away from the communicating pipe, of the drainage pump is communicated with the drainage ditch.
The method is further characterized in that one end of the well point pipe is fixedly provided with a filter screen pipe.
The method further comprises the step of arranging a supporting device at the slope surface of the edge of the foundation pit during the process of digging the foundation pit, wherein the foundation pit is generally supported by a cross-bracing type soil wall, and the cross-bracing type soil wall support can be divided into a horizontal retaining plate and a vertical retaining plate. The arrangement of the horizontal earth retaining plate is divided into an intermittent type and a continuous type. When the excavation depth of the cohesive soil with low humidity is less than 3m, the cohesive soil can be supported by the discontinuous horizontal retaining plates, and when the loose soil with high humidity can be supported by the continuous horizontal retaining plates, the excavation depth can reach 5 m; the loose and high-humidity soil can be supported by a vertical retaining plate, and the depth of the digging is not limited.
The method further comprises the steps of adding sand and stone into the well point pipe when the well point pipe is filled with sand, stopping filling the sand when the distance between the sand and the ground is 1 m, jolting the sand and stone through a vibrating rod, adding clay above the sand and stone, and jolting the sand and stone through the vibrating rod.
The method further comprises the step that when the seal is used for pouring concrete into the well point pipe, air in the well point pipe can be exhausted through the vibration exhaust pump after pouring is finished, the concrete in the well point pipe is tamped, and stability is improved.
The method is further characterized in that the well point pipe can be taken out of the water pumping hose and the water pumping pump for sealing after the foundation pit is completely constructed and excavated, and the well point pipe can be laid for precipitation half a month before the foundation pit is excavated.
The invention has the beneficial effects that: the periphery of the foundation pit to be excavated is provided with a plurality of well point holes, the inside of each well point hole is provided with a well point pipe, so that underground water can permeate into the well point pipe through the water inlet hole, meanwhile, the well point pipe is provided with a water pumping hose and a water pumping pump, one side of the water pumping pump is provided with a waterproof cable which is electrically connected with a ground power supply, when the water pumping pump is started, accumulated water in the well point pipe can be pumped out, a drainage pump is started, the drainage pump can pump the accumulated water pumped into a water pumping main pipe by the water pumping pump and discharge the accumulated water into a groove to be collected through a drainage ditch, the well point holes are arranged on the periphery of the foundation pit to be excavated, so that the working efficiency of water drainage at the well point can be increased, meanwhile, one end of each well point pipe is provided with a filter pipe, sludge in the underground water level can be filtered, the blockage of the sludge well point pipe is avoided, and the normal pumping of the accumulated water is influenced, the stability of great increase ponding discharge has concrete and fragment of brick to build at the escape canal simultaneously to be equipped with the waterproof layer on its surface, avoid taking ponding infiltration underground once more, cause the influence of drawing water, the device can realize improving the work efficiency that the foundation ditch well point falls the drainage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of an embodiment of a method for lowering and draining water in combination with a light well point of a hydraulic engineering foundation pit and a pipe well according to the embodiment of the invention;
FIG. 2 is a flow chart of a fourth step of drilling a well point hole in an embodiment of a hydraulic engineering foundation pit pipe well combined light well point dewatering and drainage method according to the invention;
FIG. 3 is a schematic structural diagram of a foundation pit of a hydraulic engineering foundation pit pipe well combined with a light well point dewatering and drainage method according to an embodiment of the invention;
fig. 4 is a front view of a foundation pit in a hydraulic engineering foundation pit pipe well combined light well point dewatering and drainage method according to an embodiment of the invention;
fig. 5 is a top view of a foundation pit in a hydraulic engineering foundation pit pipe well combined light well point dewatering and drainage method according to an embodiment of the invention.
Reference numerals:
1. a pipe arranging groove; 2. a water pumping main pipe; 3. a suction pipe; 4. a water hose; 5. a water pump; 6. a communicating pipe; 7. and (7) draining the pump.
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. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The invention is further described with reference to the following drawings and detailed description:
the first embodiment is as follows:
referring to fig. 1, a method for lowering and draining water by combining a pipe well and a pipe well of a foundation pit of a hydraulic engineering with a light well point according to an embodiment of the invention is characterized in that: the specific method comprises the following steps:
s101, first-step exploration of a field: firstly, before foundation pit digging construction operation is carried out on water conservancy buildings such as wharfs, dams and the like, stay wire measurement is carried out on the area of a foundation pit to be dug and the dug depth, and meanwhile, the distance between the position of the foundation pit to be dug and an adjacent surface water body is measured;
s103, analyzing soil property data in a second step: the receipt obtains the rainfall data of a surveying field in the near year, the surface water evaporation capacity data and the change data of the underground water level at the bottom of the foundation pit to be excavated, then the obtained data is sorted and analyzed, and a data statistical list and a foundation pit construction position geological profile are drawn according to the obtained sorted and analyzed data;
s105, third site leveling: leveling the position of a foundation pit to be excavated, leveling and excavating convex soil of a field through an excavator, transferring the excavated soil to the concave filling of the field through a construction site transfer car, filling the redundant convex soil to the concave, compacting and flattening the position of the filled soil through a flattening machine, measuring the leveled field through a water level detector, and leveling and adjusting through a bulldozer and the flattening machine;
example two:
s107, constructing a well point pipe of the foundation pit: punching holes are formed by punching, then punching tubes are placed in the punching holes, sand is filled in the punching holes through sand stones, and then the punching holes are sealed through clay.
1) Punching, namely arranging a well point hole on one side of the pipe arranging groove through a drilling machine, and ensuring the verticality of a drill bit of the drilling machine during drilling when the drilling machine drills the well point hole and the excavation accuracy of the well point hole, so that the verticality of the well point hole can be ensured, and the well point pipe can be conveniently inserted; in order to ensure the construction quality, the base of the drilling machine is fixed before drilling, so that the stability and the strength of the drilling machine in the drilling process can be increased, and the bending damage of a drilling bit caused by the sedimentation of the drilling machine per se is avoided;
2) the method comprises the following steps of burying a pipe, after the completion of a well point hole, putting a well point pipe prepared in advance into the well point hole through a hoisting device, and limiting the well point pipe through limiting equipment in the placing process so as to ensure that the well point pipe can vertically enter the well point hole and avoid collapse caused by collision between the well point pipe and the well point hole;
3) filling sand into the well point hole, filling silt between the outer wall of the well point pipe and the well point hole after the well point pipe is placed into the well point hole, ensuring that the well point pipe is in a vertical state in the process of increasing sand filling, fixing and limiting the well point pipe by using lifting equipment and limiting equipment, coaxially placing the well point hole and the well point pipe, and withdrawing the lifting equipment and the limiting equipment after the sand filling is finished;
4) and sealing, filling clay at one end of the top of the well point hole to seal the well point hole between the well point hole and the well point pipe, then putting the water suction pump and the water suction hose into the well point pipe, and pouring quick-setting concrete into the well point pipe to seal the well point pipe after the foundation pit does not need to be lowered.
Example three:
s109, arranging the pipe descending pipes at the fifth step: after the field is leveled, excavating a pipe drainage groove on the periphery of the field, and arranging a water pumping main pipe, a water suction pipe, a water pumping hose, a water pumping pump, a water drainage pump, a communication pipe, a water drainage pipe and a water drainage groove;
s1011 sixth step of anti-seepage groove construction: one side of waiting to dig the foundation ditch is dug out one through the excavator drainage tank, drainage tank's the other end and ponding pond or river are connected, the inside that drainage tank passed through is formed it through concrete and fragment of brick, is equipped with the waterproof layer in drainage tank's inside simultaneously.
In addition, in an embodiment, the specific manner of arranging the well point pipe downcomer pipes is that the pumping main pipe 2 is arranged inside the pipe arrangement tank 1, the pumping main pipe 2 is provided with a plurality of water suction pipes, one end of each water suction pipe 3, which is far away from the pumping main pipe 2, is provided with a water suction hose 4, one end of each water suction hose 4, which is far away from the water suction pipe 3, is provided with the water suction pump 5, the middle of one side of the pumping main pipe 2 is provided with the communicating pipe 6, one end of each communicating pipe 6, which is far away from the pumping main pipe 2, is connected with one end of the drainage pump 7, and the other end of the drainage pump 7, which is far away from the communicating pipe 6, is communicated with the drainage ditch;
in addition, one end of the well point pipe is fixedly provided with a filter screen pipe;
example four:
in addition, in one embodiment, a supporting device is arranged at the edge slope surface of the foundation pit during the excavation of the foundation pit, the excavation of the foundation pit generally adopts a cross-bracing type soil wall support, the cross-bracing type soil wall support can be divided into two types, namely a horizontal retaining plate and a vertical retaining plate, and the arrangement of the horizontal retaining plate is divided into two types, namely an intermittent type and a continuous type; when the excavation depth of the cohesive soil with low humidity is less than 3m, the cohesive soil can be supported by the discontinuous horizontal retaining plates, and when the loose soil with high humidity can be supported by the continuous horizontal retaining plates, the excavation depth can reach 5 m; the vertical retaining plate type support can be used for supporting loose soil with high humidity, the depth of a digger is not limited, the support device can protect the side edge or the slope dug by the foundation pit, the safety of the side edge or the slope is improved, the collapse of concrete is avoided, and the safety in the excavation construction process of the foundation pit is improved;
example five:
in addition, in one embodiment, when the well point pipe is filled with sand, sand is firstly added into the well point pipe, when the distance between the sand and the ground is 1 m, the sand filling is stopped, then the sand is tamped by a vibrating rod, then clay is added above the sand, and the sand is tamped by a vibrating rod which is also applicable;
in addition, in one embodiment, when the seal is used for pouring concrete into the well point pipe, air in the well point pipe can be exhausted through the vibration exhaust pump after pouring is finished, and the concrete in the well point pipe is tamped, so that the stability is improved;
in addition, in one embodiment, the well point pipe can be taken out of the water pumping hose and the water pumping pump for sealing after the foundation pit is completely dug, and can be laid for precipitation half a month before the foundation pit is dug.
In summary, according to the above technical solution of the present invention, a plurality of well point holes are formed around the foundation pit to be excavated, and well point pipes are arranged inside the well point holes, so that groundwater can permeate into the well point pipes through water inlet holes, meanwhile, a water pumping hose and a water pumping pump are arranged in the well point pipes, one side of the water pumping pump is provided with a waterproof cable electrically connected to a ground power supply, so that when the water pumping pump is started, accumulated water in the well point pipes can be pumped out, and simultaneously, a drain pump is started, the water pumping pump can pump out the accumulated water pumped into a water pumping main pipe by a drain pump, and then the accumulated water is discharged into a groove to be collected by a drain ditch, and since the well point holes are formed around the foundation pit to be excavated, the work efficiency of water drainage at the well point can be increased, and meanwhile, one end of each well point pipe is provided with a filter pipe, sludge in the groundwater level can be filtered, avoid silt to cause the jam to the well point pipe, influence the normal of ponding and take out, the stability that great increase ponding discharged is built at the drainage ditch concrete and fragment of brick simultaneously to be equipped with the waterproof layer on its surface, avoid taking ponding and permeate the underground once more, cause the influence of drawing water, the device can realize improving the work efficiency that the drainage was fallen to the foundation ditch well point.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. A hydraulic engineering foundation pit and pipe well combined light well point dewatering and drainage method is characterized by comprising the following steps: the specific method comprises the following steps:
first-step exploration of a field: firstly, before foundation pit digging construction operation is carried out on wharf and dam water conservancy buildings, bracing wire measurement is carried out on the area of a foundation pit to be dug and the dug depth, and meanwhile, the distance between the position of the foundation pit to be dug and an adjacent surface water body is measured;
and a second step of soil property data analysis: the receipt obtains the rainfall data of a surveying field in the near year, the surface water evaporation capacity data and the change data of the underground water level at the bottom of the foundation pit to be excavated, then the obtained data is sorted and analyzed, and a data statistical list and a foundation pit construction position geological profile are drawn according to the obtained sorted and analyzed data;
thirdly, site leveling: leveling the position of a foundation pit to be excavated, leveling and excavating convex soil of a field through an excavator, transferring the excavated soil to the concave filling of the field through a construction site transfer car, filling the redundant convex soil to the concave, compacting and flattening the position of the filled soil through a flattening machine, measuring the leveled field through a water level detector, and leveling and adjusting through a bulldozer and the flattening machine;
fourthly, foundation pit well point pipe construction: firstly punching to form a punching hole, then placing a punching pipe in the punching hole and filling sand in the punching hole through sandstone, and then sealing the punching hole by using clay:
1) punching, namely arranging a well point hole on one side of the pipe arranging groove through a drilling machine, and when the drilling machine drills the well point hole, ensuring the verticality of a drill bit of the drilling machine during drilling and ensuring the excavation accuracy of the well point hole so as to ensure the verticality of the well point hole and facilitate the insertion of a well point pipe, wherein one end of the well point pipe is fixedly provided with a filter screen pipe; in order to ensure the construction quality, the base of the drilling machine is fixed before drilling, so that the stability and the strength of the drilling machine in the drilling process can be improved, and the bending damage of a drilling bit caused by the sedimentation of the drilling machine per se is avoided;
2) the method comprises the following steps of burying a pipe, after the completion of a well point hole, putting a well point pipe prepared in advance into the well point hole through a hoisting device, and limiting the well point pipe through limiting equipment in the placing process so as to ensure that the well point pipe can vertically enter the well point hole and avoid collapse caused by collision between the well point pipe and the well point hole;
3) filling sand into the well point hole, filling silt between the outer wall of the well point pipe and the well point hole after the well point pipe is placed into the well point hole, ensuring that the well point pipe is in a vertical state in the process of increasing sand filling, fixing and limiting the well point pipe by using lifting equipment and limiting equipment, coaxially placing the well point hole and the well point pipe, and withdrawing the lifting equipment and the limiting equipment after the sand filling is finished;
4) sealing, namely filling clay at one end of the top of the well point hole to seal the well point hole between the well point hole and the well point pipe, then putting a water suction pump and a water suction hose into the well point pipe, and pouring quick-setting concrete into the well point pipe to seal the well point pipe after the foundation pit does not need to be lowered; when the seal is used for pouring concrete into the well point pipe, air in the well point pipe is exhausted through the vibration exhaust pump after pouring is finished, and the concrete in the well point pipe is tamped, so that the stability is improved;
arranging the well point pipe dewatering pipelines of the fifth step: after the field is leveled, excavating a pipe drainage groove on the periphery of the field, and arranging a water pumping main pipe, a water suction pipe, a water pumping hose, a water pumping pump, a water drainage pump, a communication pipe, a water drainage pipe and a water drainage groove; the specific mode that the well point pipe downcomer pipeline is arranged is that the pumping main pipe is arranged in the pipe arranging groove, a plurality of water suction pipes are arranged on the pumping main pipe, the end, away from the pumping main pipe, of each water suction pipe is provided with the pumping hose, the end, away from the water suction pipes, of each pumping hose is provided with the pumping pump, the communicating pipe is arranged in the middle of one side of the pumping main pipe, one end, away from the pumping main pipe, of each communicating pipe is connected with one end of the drainage pump, and the other end, away from the communicating pipes, of the drainage pump is communicated with the drainage ditch;
sixthly, anti-seepage groove construction: digging a drainage groove at one side of a foundation pit to be dug by a digging machine, wherein the other end of the drainage groove is connected with a water accumulation pool or a river, the drainage groove is formed by concrete and bricks in the drainage groove, and a waterproof layer is arranged in the drainage groove; and a supporting device is arranged at the slope surface of the edge of the foundation pit in the process of digging the foundation pit.
2. The hydraulic engineering foundation pit and pipe well combined light well point dewatering and drainage method according to claim 1, characterized in that when the well point pipe is filled with sand, sand is firstly added into the well point pipe, when the distance between the sand and the ground is 1 m, the sand filling is stopped, then the sand is tamped by a vibrating rod, then clay is added above the sand, and the sand is tamped by the vibrating rod in the same way.
3. The method of claim 1, wherein the well pipe is removed from the pit after the pit is completely excavated, the suction hose and the suction pump are sealed, and the well pipe is laid for dewatering half a month before the pit is excavated.
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| CN112609722A (en) * | 2020-12-09 | 2021-04-06 | 中铁二十局集团第六工程有限公司 | Drainage and water leakage plugging method for deep foundation pit in sea reclamation area |
| CN113152500B (en) * | 2021-01-04 | 2022-10-21 | 中国建筑土木建设有限公司 | Lake-facing deep foundation pit dewatering device and construction method thereof |
| CN114197478B (en) * | 2021-12-28 | 2023-06-16 | 安徽重标建筑工程有限公司 | Auxiliary device applied to foundation pit dewatering construction and working method thereof |
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| CN201952806U (en) * | 2011-01-24 | 2011-08-31 | 惠州市水电建筑工程有限公司 | Light-duty well-points dewatering construction device |
| CN109736338A (en) * | 2018-12-26 | 2019-05-10 | 江苏省水利工程科技咨询股份有限公司 | A kind of hydraulic engineering foundation pit pipe well combination light well point Yield rainfall relation method |
| CN209555956U (en) * | 2019-01-11 | 2019-10-29 | 河北中地志诚土木工程有限公司 | Drop and drainage structure is secretly buried in a kind of drainage |
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