CN111733845A - Device and method for preventing waterlogging based on deep foundation pit drainage - Google Patents
Device and method for preventing waterlogging based on deep foundation pit drainage Download PDFInfo
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- CN111733845A CN111733845A CN202010472227.1A CN202010472227A CN111733845A CN 111733845 A CN111733845 A CN 111733845A CN 202010472227 A CN202010472227 A CN 202010472227A CN 111733845 A CN111733845 A CN 111733845A
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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
- E02D19/08—Restraining of underground water by employing open ditches arranged below the level of the 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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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
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Abstract
The invention relates to the field of building construction, in particular to a device and a method for preventing waterlogging based on drainage of a deep foundation pit, which comprises a deep foundation pit body, wherein drainage channels are arranged at four corners of the deep foundation pit body, drainage connecting holes are respectively arranged at the four corners of the drainage channels, a support piece is arranged on the inner wall of the deep foundation pit body, the support pieces are spliced together and attached to and cover the inner wall of the deep foundation pit body, at least one drainage pipe is arranged on each drainage pipe, a sponge strip is arranged in each drainage pipe, a plurality of drainage holes are arranged on the outer wall of each drainage pipe, an extrusion piece is arranged on the end surface of each support piece, which is far away from the deep foundation pit body, a certain gap is arranged between each extrusion piece and each support piece, and one end part of each sponge strip extends out of each support piece and is connected to each support piece in a downward and, the permeate water is collected on the support member and flows through the retaining plate into the drainage channel.
Description
Technical Field
The invention relates to the field of building construction, in particular to a device and a method for preventing waterlogging based on deep foundation pit drainage.
Background
The measures of soil retaining structure, underground water control, environmental protection and the like required for ensuring the safety and stability of the underground space formed by downward excavation of the ground during the construction of the underground structure are called foundation pit engineering. The foundation pit engineering is a system engineering integrating geological engineering, geotechnical engineering, structural engineering and geotechnical testing technology. The main content is as follows: engineering investigation, supporting structure design and construction, earth excavation and backfilling, underground water control, information construction, surrounding environment protection and the like. The simplest and most economical method for foundation pit construction is slope excavation, but the method is often limited by site conditions and the surrounding environment, so that a supporting system needs to be designed to ensure the smooth construction and better protect the surrounding environment.
In the construction of basis, foundation ditch excavation can receive the influence of water, and water divide into ground water and groundwater again, and the waterproof several kinds that mainly divide into of drainage of present foundation ditch are applicable to different condition respectively:
1. the water drainage method of the water collecting pit is not suitable for the geology with a large amount of quicksand, is suitable for most other conditions, and the wing plate at the bottom of the foundation pit is positioned below the underground water level, so that underground water is often seeped into the excavated foundation pit.
2. The well point drainage method is mainly suitable for the phenomenon that the soil quality is poor and the sand flows seriously. Meanwhile, the underground water level is high, the pit wall is not easy to stabilize when the dug foundation pit is deep, and the method can be adopted when the water is difficult to drain by other drainage methods.
Other drainage methods include a curtain method and an electroosmotic drainage method.
Chinese patent CN207062965U discloses a foundation pit drainage system, which comprises a water tank surrounding the periphery of a foundation pit, a drainage ditch arranged in the foundation pit, wherein the drainage ditch comprises a main ditch and a branch ditch connected with the main ditch, the main ditch penetrates through a construction area in the foundation pit and is communicated with a water collecting well arranged outside the construction area, the bottom plane of the water collecting well is lower than the plane where the bottom of the main ditch is located, the foundation pit drainage system also comprises drainage equipment for guiding water in the water collecting well into the water tank, and the water tank is connected with an external drainage system; however, the side wall of the foundation pit is collapsed due to the fact that rainwater permeates into the side wall of the foundation pit when raining, and the side wall of the foundation pit bears large pressure.
However, when raining, rainwater can infiltrate into the side wall of the foundation pit, so that the side wall of the foundation pit bears large pressure to collapse.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device and a method for drainage and waterlogging prevention based on a deep foundation pit.
In order to solve the technical problems, the invention provides the following technical scheme:
provides a device for draining and preventing waterlogging based on a deep foundation pit, which comprises a deep foundation pit body, wherein the deep foundation pit body is arranged into a rectangle, drainage channels are arranged at four corners of the deep foundation pit body, the drainage channel is arranged in a shape of Chinese character 'hui', drainage connecting holes are arranged at four corners of the drainage channel, a support member is arranged on the inner wall of the deep foundation pit body, the support piece is spliced together and attached to the inner wall of the deep foundation pit body, the support piece is provided with at least one drain pipe, each drain pipe is internally provided with a sponge strip, the outer wall of each drain pipe is provided with a plurality of drain holes, one end of each drain pipe is sealed and arranged, the other end of each drain pipe is provided with an opening, the end surface of one end of the support piece, which is far away from the deep foundation pit body, is provided with an extrusion piece, be equipped with certain clearance between extruded piece and the support piece, the extruded piece concatenation is in the same place, and the one end tip of sponge strip extends the support piece outside and flagging butt to the support piece on.
As an optimal scheme of the device based on deep foundation pit drainage waterlogging prevention, the border department of deep foundation pit body is equipped with at least round water catch bowl, and is many rights the water catch bowl is coaxial to be set up on this external edge of deep foundation pit, all is equipped with a plurality of intercommunication mouths on each inner wall of drainage channel, and the intercommunication mouth link up all water catch bowls, passes through between the many rounds of water catch bowls intercommunication mouth intercommunication, the intercommunication mouth is located the drain pipe top.
As an optimal scheme of device based on deep basal pit drainage waterlogging prevention, support piece includes first connecting plate, first mounting panel and first breakwater, first connecting plate has one along the equal subsides of the ascending both ends face of thickness side first mounting panel, wherein the inner wall fixed connection of a first mounting panel and deep basal pit body, first mounting panel length and width size all are greater than the size of first connecting plate length and width, have formed first draw-in groove between two first mounting panels and the first connecting plate, can dismantle in the first draw-in groove and be connected with first breakwater, first breakwater sets up to back the style of calligraphy to the cladding is around first connecting plate.
As an optimal scheme of device based on deep basal pit drainage waterlogging prevention, the extruded article includes second connecting plate, second mounting panel and second retaining strip, the second connecting plate has one along the equal subsides of the ascending both ends face of thickness side the second mounting panel, one of them second mounting panel and the inner wall fixed connection of deep basal pit body, second mounting panel length and width size all are greater than the size of second connecting plate length and width, have formed the second draw-in groove between two second mounting panels and the second connecting plate, can dismantle in the second draw-in groove and be connected with the second retaining strip, second retaining strip set up to back style of calligraphy to the cladding is around the second connecting plate.
As an optimal scheme of the device for preventing waterlogging based on deep foundation pit drainage, the bottom parts of the supporting piece and the extrusion piece are provided with connecting pieces, each connecting piece comprises a supporting bottom plate, a first slot and a second slot, the two ends of the supporting bottom plate in the thickness direction are respectively provided with the first slot and the second slot, and the supporting piece and the extrusion piece are respectively inserted into the first slot and the second slot.
As an optimal scheme of the device for preventing waterlogging based on deep foundation pit drainage, the extrusion piece further comprises a push rod, a pushing head, an extrusion plate and a spring, the push rod penetrates through the second connecting plate and the second mounting plate and is in sliding connection with the second connecting plate and the second mounting plate, a guide sleeve is arranged at one end face, far away from the second connecting plate, of the second mounting plate, the guide sleeve is in sliding connection with the push rod, one end portion, far away from the support piece, of the push rod is provided with the pushing head, one end portion, close to the support piece, of the push rod is provided with the extrusion plate, a certain gap is formed between the extrusion plate and the second mounting plate, close to the support piece, of the extrusion plate and the second mounting plate, the spring is arranged between the extrusion plate and the second mounting plate.
As an optimal scheme of the device for preventing waterlogging based on deep foundation pit drainage, the drainage pipe comprises a drainage hole, a drainage section and an installation section, the drainage section and the installation section are integrally formed and arranged, an installation pipeline matched with the quantity of the drainage pipes is buried in the inner wall of the deep foundation pit body, the installation section is inserted in the installation pipeline, the drainage section is arranged outside the installation pipeline, and the installation section is provided with a plurality of drainage sections.
As a preferred scheme of the device for preventing waterlogging based on drainage of the deep foundation pit, the installation pipeline has an axial extension direction, the installation pipeline has a peripheral surface extending circumferentially, an installation platform is coaxially arranged in the peripheral surface, two radial retaining holes are arranged at the end part of the peripheral surface far away from the installation platform, the axial retaining holes are arranged on the inner wall of the peripheral surface, the installation section comprises an installation rod body, an installation cap body, an operation groove body, clamping blocks, a hole and a buckle, the installation rod body has the axial extension direction and is spliced with the installation platform, the installation cap body is arranged at the end part of the installation platform far away from the installation rod body, a circle of the operation groove body is formed between the installation cap body and the installation rod body, two clamping blocks are circumferentially distributed on the outer wall of the operation groove body, the clamping blocks correspond to the radial retaining holes one by one and are clamped and matched with the radial retaining holes, and, the trompil sets up between two joint pieces, is equipped with on the trompil the buckle forms the adjustment tank between buckle and the trompil, and the buckle all adopts the elasticity material to make with the operation cell body, and the buckle keeps the cooperation of hole joint with the axial.
As an optimal scheme of the device based on deep foundation pit drainage waterlogging prevention, the elastic contact piece can be detachably arranged between the operation groove body and the installation platform, the elastic contact piece has an axial extension direction, the two ends of the axial direction of the elastic contact piece are respectively abutted to the end parts of the operation groove body and the installation platform, and the elastic contact piece is of an elastic deformation structure with a deformable radial dimension.
The method for preventing waterlogging based on deep foundation pit drainage is also provided, and comprises the following steps:
the water collecting grooves have the function of collecting rainwater at the peripheral edges of the deep foundation pit body, and the rainwater can enter the water collecting grooves one circle smaller than the large circle of water collecting grooves in sequence from the large circle of water collecting grooves and finally flow out of the communication openings;
water permeates into the side wall of the deep foundation pit body from the ground, permeates into the side wall of the deep foundation pit body, moves to the position of the drain pipe in the side wall of the deep foundation pit body, and enters the drain pipe through a drain hole arranged on the drain pipe;
the seepage water flows in the drainage pipe and flows to the opening end of the drainage pipe, and finally flows out of the opening end of the drainage pipe and flows into the drainage channel;
the drainage connecting holes in the drainage channel are communicated with a water pump, and then the rainwater accumulated in the drainage channel is discharged out of the foundation pit body through the water pump.
In conclusion, the invention has the following beneficial effects:
compared with the prior art, the invention has the beneficial effects that:
the utility model discloses a deep basal pit body, including the deep basal pit body, the water catch bowl is seted up along the outer water catch bowl of seting up a plurality of rings earlier, later set up the intercommunication mouth with the water catch bowl intercommunication together, later at the pre-buried a plurality of installation pipeline of lateral wall of deep basal pit body, with the drain pipe in the grafting gets into the installation pipeline to insert the sponge strip in the drain pipe, install elastic contact simultaneously, utilize elastic contact to accomplish the fixed of drain pipe on the deep basal pit body. After the deep foundation pit body is installed, installing a supporting piece, arranging through holes matched with the drain pipe on a first connecting plate and a first installing plate respectively attached to the end surfaces of two ends of the first connecting plate to ensure that the two first installing plates are aligned with each other, then coating a circle of first water retaining strip on the periphery of the first connecting plate, inserting the supporting piece outside the drain pipe, installing a connecting piece, inserting and matching a first slot of the connecting piece with the drain pipe, then installing an extrusion piece, the same as the supporting piece, arranging through holes matched with the drain pipe on a second connecting plate and a second installing plate respectively attached to the end surfaces of two ends of the second connecting plate to ensure that the two second installing plates are aligned with each other, then coating a circle of second water retaining strip on the periphery of the second connecting plate, then penetrating a push rod through the second connecting plate and the second installing plate, and assembling a pushing head for the push rod, A compression plate and a spring.
In the device and the method, the elastic contact element is an elastic deformation structure with a deformable radial dimension, after the elastic contact element is assembled and enters the outer peripheral surface, the elastic contact element is in a free state or an extrusion state, so that stable contact connection between the elastic contact element and the outer peripheral surface can be improved, then the elastic contact element is continuously pushed, one end part of the elastic contact element is abutted to the mounting platform, then the drain pipe is inserted, the operation groove body of the mounting section is abutted to the other end part of the elastic contact element, at the moment, the inner wall of the elastic contact element is contacted and abutted to the outer wall of the mounting rod body, and therefore the axial stability of the mounting section in the installation pipeline in an inserting mode can be improved. The setting up of drain pipe and sponge strip can make the infiltration water in the deep basal pit body lateral wall flow to support piece and extruded article between through the drain pipe for the infiltration water is collected to support piece on, flows to the drainage channel in through the fixed plate, prevents that infiltration water is more in the deep basal pit body lateral wall, causes deep basal pit body lateral wall to collapse. The use effect of considering the sponge strip has set up the push rod, removes to promote the push rod through promoting the head, can extrude the infiltration water of absorbing in the sponge strip to improve the collection effect of sponge strip to the infiltration water.
Drawings
FIGS. 1 and 2 are schematic views of the apparatus of the present invention from two different perspectives;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
FIG. 4 is a side view of the present invention at the location of the supports, drain and extrusion;
FIG. 5 is a schematic view of the structure of the present invention at the location of the support, drain and extrusion;
FIG. 6 is a top view of the present invention at the location of the supports, drain and extrusion;
FIG. 7 is a schematic cross-sectional view taken along line A-A of FIG. 6;
FIG. 8 is a schematic view of the structure of the drain pipe according to the present invention;
FIG. 9 is an exploded view of the drain pipe of the present invention;
FIG. 10 is an exploded view of the present invention in a state where no sponge strip is placed in the drain pipe;
FIG. 11 is an enlarged schematic view at B of FIG. 10;
FIG. 12 is a schematic view of the structure of the present invention where the pipe is installed;
FIG. 13 is a schematic flow chart of the method of the present invention.
The reference numbers in the figures are:
1-deep foundation pit body; 1 a-a drainage channel; 1 b-a drainage connection hole; 1 c-a water collection tank; 1 d-a communication port; 1 e-installing a pipeline; 1e 1-outer peripheral surface; 1e 2-mounting docks; 1e 3-radial retention holes; 1e 4-axial retention hole; 1e 5-fixation holes;
2-a support; 2 a-a first connection plate; 2 b-a first mounting plate; 2 c-a first water bar; 2 d-a first card slot;
3, a drain pipe; 3 a-a drain hole; 3 b-a drainage section; 3 c-an installation section; 3c 1-mounting a bar body; 3c 2-installing a cap; 3c 3-operating the trough body; 3c 4-clip block; 3c 5-open pore; 3c 6-snap; 3c 7-adjustment groove;
4-sponge strip;
5-extrusion; 5 a-a second connecting plate; 5 b-a second mounting plate; 5 c-a second water retaining strip; 5 d-a second card slot; 5 e-a push rod; 5 f-pushing head; 5 g-a squeeze board; 5 h-spring;
6-connecting piece; 6 a-a support floor; 6 b-first slot; 6 c-a second slot;
7-elastic contact piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 and 2 and 3, the device comprises a deep foundation pit body 1, the deep foundation pit body 1 is rectangular, drainage channels 1a are arranged at four corners of the deep foundation pit body 1, the drainage channels 1a are in a shape of Chinese character hui, drainage connecting holes 1b are arranged at four corners of the drainage channels 1a, a support member 2 is arranged on the inner wall of the deep foundation pit body 1, the support member 2 is spliced together and attached to the inner wall of the deep foundation pit body 1, at least one drainage pipe 3 is arranged on the support member 2, each drainage pipe 3 is internally provided with a sponge bar 4, a plurality of drainage holes 3a are arranged on the outer wall of the drainage pipe 3, one end of each drainage pipe 3 is closed, the other end of each drainage pipe 3 is open, an extrusion member 5 is arranged on the end face of the support member 2 far away from the deep foundation pit body 1, a certain gap is, one end of the sponge strip 4 extends outside the support 2 and hangs down to abut against the support 2.
When raining, especially when the rain is strong, rainwater permeates into the side wall of the deep foundation pit body 1 from the ground, the permeated water moves to the position of the drain pipe 3 in the side wall of the deep foundation pit body 1, enters the drain pipe 3 through the drain hole 3a arranged on the drain pipe 3, and then flows in the drain pipe 3 and flows to the open end of the drain pipe 3, and finally flows out of the open end of the drain pipe 3, namely, the permeated water flows between the support member 2 and the extrusion member 5 through the drain pipe 3 and then flows into the drainage channel 1a, the drainage connecting hole 1b in the drainage channel 1a is communicated with a water pump, and then the rainwater accumulated in the drainage channel 1a is discharged out of the foundation pit body through the water pump, so that the side wall of the deep foundation pit body 1 caused by permeation and collapse of the rainwater in the side wall of the deep foundation pit body 1. In this device, the support member 2 and the extrusion member 5 are arranged so that the permeated water is transferred to between the support member 2 and the extrusion member 5 through the drain pipe 3, and then the permeated water is collected by the extrusion member 5 and discharged into the drainage channel 1a which has been dug up to the deep foundation pit body 1.
Referring to fig. 3, at least one circle of water collecting grooves 1c are formed in the edge of the deep foundation pit body 1, a plurality of circles of water collecting grooves 1c are coaxially arranged on the outer edge of the deep foundation pit body 1, a plurality of communicating ports 1d are formed in each inner wall of the drainage channel 1a, the communicating ports 1d penetrate through all the water collecting grooves 1c, the plurality of circles of water collecting grooves 1c are communicated with one another through the communicating ports 1d, and the communicating ports 1d are located at the top of the drainage pipe 3.
The water collecting tank 1c is arranged at the edge of the deep foundation pit body 1, a plurality of circles of water collecting tanks 1c can be arranged according to actual conditions, a large circle of small circles are sleeved between the water collecting tanks 1c, the water collecting tanks 1c can collect rainwater at the peripheral edge of the deep foundation pit body 1, and when raining, the rainwater can flow into the water collecting tanks 1c after falling on the deep foundation pit body 1. After in rainwater was collected to water catch bowl 1c, can follow the water catch bowl 1c of big circle in proper order and enter into the water catch bowl 1c rainwater than its little round, analogize with this, enter into in the water catch bowl 1c of minimum circle, and finally flow from intercommunication mouth 1d, permeate to deep basal pit body 1 inside, intercommunication mouth 1d is located drain pipe 3 top, make the infiltration water be led to the position at drain pipe 3 place, the position that prevents to keep away from drain pipe 3 contains the unable position that moves to drain pipe 3 place of a large amount of infiltration water, the waterlogging prevention effect of deep basal pit body 1 has been improved, the drainage effect of drain pipe 3 to the infiltration water has been improved indirectly.
Please refer to fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, the supporting member 2 includes a first connecting plate 2a, a first mounting plate 2b and a first water bar 2c, the first connecting plate 2a is covered with a first mounting plate 2b along both end faces in the thickness direction, wherein the first mounting plate 2b is fixedly connected with the inner wall of the deep foundation pit body 1, the length and width dimensions of the first mounting plate 2b are both greater than the length and width dimensions of the first connecting plate 2a, a first clamping groove 2d is formed between the two first mounting plates 2b and the first connecting plate 2a, the first water bar 2c is detachably connected in the first clamping groove 2d, the first water bar 2c is set to be a shape of Chinese character 'hui' and is covered around the first connecting plate 2 a.
Extruded article 5 includes second connecting plate 5a, second mounting panel 5b and second manger plate strip 5c, second connecting plate 5a has a second mounting panel 5b along the equal laminating of the ascending both ends face of thickness side, wherein the inner wall fixed connection of a second mounting panel 5b and deep basal pit body 1, second mounting panel 5b length and width size all are greater than the size of second connecting plate 5a length and width, second draw-in groove 5d has been formed between two second mounting panels 5b and the second connecting plate 5a, can dismantle in the second draw-in groove 5d and be connected with second manger plate strip 5c, second manger plate strip 5c sets up to the type of returning the words, and the cladding is around second connecting plate 5 a.
In the present embodiment, the first connecting plate 2a, the first mounting plate 2b, the second connecting plate 5a, and the second mounting plate 5b may be made of a material that does not absorb moisture and has good resistance to water vapor.
The bottom of support piece 2 and extruded article 5 is equipped with connecting piece 6, and connecting piece 6 includes supporting baseplate 6a, first slot 6b and second slot 6c, and supporting baseplate 6a is equipped with first slot 6b and second slot 6c respectively along ascending both ends of thickness direction, and support piece 2 and extruded article 5 are pegged graft respectively on first slot 6b and second slot 6 c.
The connecting member 6 is provided to support and fix the supporting member 2 and the pressing member 5, and the first and second insertion grooves 6b and 6c are provided to separate the supporting member 2 and the pressing member 5, so that the supporting member 2 and the pressing member 5 have a certain interval, meanwhile, the support member 2 and the extrusion member 5, namely the first mounting plate 2b and the second water retaining strip 5c are inserted into the first slot 6b and the second slot 6c, the first water retaining strip 2c and the second clamping groove 5d play a role in sealing the first slot 6b and the second slot 6c, rainwater is prevented from flowing back into the side wall of the foundation pit body, the using effect of the support member 2 and the extrusion member 5 is improved, when support piece 2 and extruded piece 5 take place to damage, can also demolish support piece 2 and extruded piece 5 from connecting piece 6 fast, also make support piece 2 play the support effect to deep basal pit body 1 lateral wall.
The extrusion piece 5 also comprises a push rod 5e, a push head 5f, an extrusion plate 5g and a spring 5h, the push rod 5e penetrates through the second connecting plate 5a and the second mounting plate 5b, and with second connecting plate 5a, second mounting panel 5b is sliding connection, second mounting panel 5b keeps away from the one end terminal surface of second connecting plate 5a and is equipped with the guide pin bushing, guide pin bushing and push rod 5e sliding connection, the one end tip that support piece 2 was kept away from to push rod 5e is equipped with and promotes head 5f, the one end tip that support piece 2 was close to push rod 5e is equipped with stripper plate 5g, a certain clearance has between stripper plate 5g and the second mounting panel 5b that is close to support piece 2 setting, be equipped with spring 5h between stripper plate 5g and the second mounting panel 5b that is close to support piece 2 setting, the one end of spring 5h is connected with second mounting panel 5b, the other end of spring 5h is connected with stripper plate 5 g.
In this embodiment, the setting of guide pin bushing can play the effect of direction to the motion process of push rod 5e, when preventing that push rod 5e from moving, produces the slope for second connecting plate 5a to prevent that stripper plate 5g from producing the deviation when extrudeing the part outside drain pipe 3 of sponge strip 4 between support piece 2 and the extruded article 5, indirectly improved the extrusion effect of stripper plate 5g to sponge strip 4.
In the device, a deep foundation pit body 1 is set to be rectangular, a plurality of support pieces 2 and extrusion pieces 5 which are spliced together are arranged on four inner walls of the deep foundation pit body 1, at least one drain pipe 3 is arranged on each support piece 2, a sponge strip 4 is embedded in each drain pipe 3, the support pieces 2 positioned on the same inner wall of the deep foundation pit body 1 are connected through first water retaining strips 2c which are coated on the periphery of a first connecting plate 2a, namely the first water retaining strips 2c between the adjacent support pieces 2 are mutually abutted, the splicing effect between the adjacent support pieces 2 is improved, the support pieces 2 are prevented from inclining when the support pieces 2 support the side wall of the deep foundation pit body 1, in addition, the arrangement of a first clamping groove 2d and the first water retaining strips 2c can play a good sealing effect between the adjacent support pieces 2, and the permeation water is prevented from flowing back to the side wall of the foundation pit body between the adjacent support pieces 2, the use effect of the support 2 is improved. It is same, be located connecting plate 5a second every other second fender water strip 5c of cladding between the extruded article 5 of the same inner wall department of deep basal pit body 1 and connect, the mutual butt setting of second fender water strip 5c between adjacent extruded article 5 promptly, splicing effect between adjacent extruded article 5 has been improved, prevent extruded article 5 when supporting deep basal pit body 1 lateral wall, extruded article 5 produces the slope, and second draw-in groove 5d and second fender water strip 5 c's setting can play better sealed effect between adjacent extruded article 5, prevent that the infiltration water from flowing back to the basal pit body lateral wall between adjacent extruded article 5, the result of use of extruded article 5 has been improved. The setting that a plurality of support piece 2 splice together is convenient to transport support piece 2 to according to actual conditions, the size of deep basal pit body 1, the support piece 2 of the corresponding quantity of installation, the setting that a plurality of extruded article 5 splice together is also convenient to transport extruded article 5 equally, and according to actual conditions, the size of deep basal pit body 1, the extruded article 5 of the corresponding quantity of installation.
Referring to fig. 8 to 12, the drain pipe 3 includes a drain hole 3a, a drain section 3b, and an installation section 3c, the drain section 3b and the installation section 3c are integrally formed, installation pipes 1e are embedded in the inner wall of the deep foundation pit body 1, the number of the installation pipes 1e is matched with that of the drain pipe 3, the installation section 3c is inserted into the installation pipes 1e, the drain section 3b is disposed outside the installation pipes 1e, and the installation section 3c is provided with a plurality of drain sections 3 b.
The installation pipeline 1e has an axial extension direction, the installation pipeline 1e has a circumferential extension peripheral surface 1e1, a mounting platform 1e2 is coaxially arranged in the peripheral surface 1e1, one end part of the peripheral surface 1e1 far away from the mounting platform 1e2 is provided with two radial retaining holes 1e3, the inner wall of the peripheral surface 1e1 is provided with an axial retaining hole 1e4, the installation section 3c comprises an installation rod body 3c1, an installation cap body 3c2, an operation groove body 3c3, a clamping block 3c4, an opening 3c5 and a buckle 3c6, the installation rod body 3c1 has an axial extension direction and is spliced with the mounting platform 1e2, one end part of the installation platform 1e2 far away from the installation rod body 3c1 is provided with an installation cap body 3c2, a circle of operation groove bodies 3c3 is formed between the installation cap body 3c2 and the installation rod body 3c1, two clamping blocks 3c4 are circumferentially distributed on the outer wall of the operation rod 3, the clamping blocks 4 correspond to the radial retaining holes 3, and with radial retaining hole 1e3 joint cooperation, an trompil 3c5 has been seted up on the operation cell body 3c3 lateral wall, trompil 3c5 sets up between two joint piece 3c4, be equipped with buckle 3c6 on trompil 3c5, form adjustment tank 3c7 between buckle 3c6 and the trompil 3c5, buckle 3c6 and operation cell body 3c3 all adopt elastic material to make, buckle 3c6 and axial retaining hole 1e4 joint cooperation.
An elastic contact piece 7 is detachably arranged between the operation groove body 3c3 and the installation platform 1e2, the elastic contact piece 7 has an axial extension direction, two ends of the elastic contact piece 7 in the axial direction are respectively abutted against the end parts of the operation groove body 3c3 and the installation platform 1e2, and the elastic contact piece 7 is of an elastic deformation structure with a deformable radial dimension.
The drain pipe 3 is matched with an installation pipeline 1e pre-buried in the deep foundation pit body 1 through an installation section 3c, and then is installed on the deep foundation pit body 1 and is fixed on the support piece 2. (3c3 and the installation platform 1e2 between can be connected with the elastic contact 7, the elastic contact 7 has axial extension direction, the elastic contact 7 axial direction both ends respectively with the operation trough body 3c3, installation platform 1e2 end abutting, for the convenience of assembly, the elastic contact 7 is radial dimension flexible elastic deformation structure, when the elastic contact 7 is in the free state of not receiving the external force, the radial dimension of the elastic contact 7 is greater than or equal to the radial dimension of the peripheral surface 1e1, so when the elastic contact 7 is assembled into the peripheral surface 1e1, the elastic contact 7 is in the free state or the extrusion state, which can promote the elastic contact 7 and the peripheral surface 1e1 between stable contact connection, then continue pushing the elastic contact 7, will elastic contact 7 one end of the elastic contact 7 abutting on the installation platform 1e2, and then the drain pipe 3 is inserted, so that the operation groove body 3c3 of the installation section 3c abuts against the other end part of the elastic contact piece 7, and at the moment, the inner wall of the elastic contact piece 7 contacts and abuts against the outer wall of the installation rod body 3c1, so that the axial stability of the installation section 3c inserted between the installation pipes 1e can be improved.
In this embodiment, the adjusting grooves 3c7 are disposed on both sides of each clip 3c6, and when the drain pipe 3 or the elastic contact element 7 needs to be replaced, the adjusting grooves 3c7 are disposed so that an operator can squeeze the clip 3c6 through the space provided by the operating groove 3c3 and the adjusting groove 3c7 to separate the clip 3c6 from the radial retaining hole 1e3, and the clip block 3c4 is engaged with the radial retaining hole 1e3, so that the drain pipe 3 mounted on the mounting pipe 1e cannot easily rotate.
In this embodiment, the outer wall of the installation pipeline 1e is provided with a fixing hole 1e5, and the fixing hole 1e5 is used for fixing the installation pipeline 1e on the deep foundation pit body 1. The outer wall of the installation pipeline 1e is provided with a fixing hole 1e5, and the fixing hole 1e5 is used for fixing the installation pipeline 1e on the deep foundation pit body 1.
Owing to set up sponge strip 4 in drain pipe 3, adopt sponge strip 4 to have fine hydroscopicity, when the infiltration water removes to the position at drain pipe 3 place in deep basal pit body 1 lateral wall, sponge strip 4 can adsorb the infiltration water to its interior, prevent to collect the infiltration water in drain pipe 3 and flow out to deep basal pit body 1 lateral wall in wash port 3a, the drainage effect of drain pipe 3 to the infiltration water has been improved indirectly, with sponge strip 4 tip flagging and butt to drain pipe 3 outside drain pipe 3, make when absorbing more infiltration water in sponge strip 4, that section through flagging sponge strip 4 is led, make the infiltration water discharge from sponge strip 4, flow to drainage channel 1a department, prevent that can't absorb water again behind the more water of sponge strip 4 absorption, the result of use of sponge strip 4 has been improved. It will be appreciated that when the use of the sponge strip 4 is not required, the sponge strip 4 is taken out directly into the drain pipe 3 so that the drain pipe 3 can continue to drain the permeate water.
After having collected more infiltration water in sponge strip 4, sponge strip 4 can reduce the absorption effect of infiltration water, consequently after having collected a period of infiltration water in sponge strip 4, can manually promote head 5f and drive head 5f and move on second connecting plate 5a, second mounting panel 5b, make push rod 5e drive stripper plate 5g and remove towards sponge strip 4, extrude the infiltration water of collecting in the sponge strip 4 to support piece 2 (be on first mounting panel 2b), make the infiltration water that sponge strip 4 absorb in drain pipe 3 move to sponge strip 4 in the flagging part outside drain pipe 3, the discharge effect of sponge strip 4 to drain pipe 3 has been improved, and the effect of absorbing the infiltration water of sponge strip 4 has been improved indirectly. Be provided with spring 5h between second mounting panel 5b plate body and stripper plate 5g, spring 5h set up one can prevent when need not using push rod 5e, and push rod 5e takes place to remove, secondly can be after 4 extrudations of sponge strip are accomplished, unclamp promotion head 5f and make push rod 5e because of the elasticity automatic recovery to the normal position of spring 5h, improved push rod 5 e's result of use.
Referring to fig. 13, the method includes the following steps:
s100) the water collecting grooves 1c have the function of collecting rainwater on the peripheral edge of the deep foundation pit body 1, and the rainwater can enter the water collecting grooves 1c which are smaller than the water collecting grooves 1c by one circle in sequence from the water collecting grooves 1c of the large circle and finally flow out from the communication openings 1 d.
S200) water permeates into the side wall of the deep foundation pit body 1 from the ground, the permeated water moves to the position of the drain pipe 3 in the side wall of the deep foundation pit body 1, and the water enters the drain pipe 3 through a drain hole 3a arranged on the drain pipe 3.
S300) the permeated water flows in the drain pipe 3, flows to the open end of the drain pipe 3, and finally flows out from the open end of the drain pipe 3 to flow into the drain channel 1 a.
S400) the drainage connecting hole 1b in the drainage channel 1a is communicated with a water pump, and then rainwater accumulated in the drainage channel 1a is discharged out of the foundation pit body through the water pump.
The working principle of the invention is as follows: at first the catch basin 1c of seting up a plurality of rings along the outer edge of deep basal pit body 1, later set up the intercommunication mouth 1d that communicates catch basin 1c together, later at the pre-buried a plurality of installation pipeline 1e of the lateral wall of deep basal pit body 1, peg graft drain pipe 3 and get into in the installation pipeline 1e to insert sponge strip 4 in drain pipe 3, install elastic contact 7 simultaneously, utilize elastic contact 7 to accomplish the fixed of drain pipe 3 on deep basal pit body 1. After the deep foundation pit body 1 is installed, installing a support piece 2, arranging through holes matched with a drain pipe 3 on a first connecting plate 2a and a first mounting plate 2b, respectively attaching a first mounting plate 2b to the end surfaces of the two ends of the first connecting plate 2a to ensure that the two first mounting plates 2b are mutually aligned, then coating a circle of first water retaining strip 2c around the first connecting plate 2a, inserting the support piece 2 outside the drain pipe 3, installing a connecting piece 6, inserting and matching a first slot 6b of the connecting piece 6 with the drain pipe 3, then installing an extrusion piece 5, as with the installation of the support piece 2, arranging through holes matched with the drain pipe 3 on a second connecting plate 5a and a second mounting plate 5b, respectively attaching a second mounting plate 5b to the end surfaces of the two ends of the second connecting plate 5a to ensure that the two second mounting plates 5b are mutually aligned, then coating a circle of second water retaining strip 5c around the second connecting plate 5a, then, the push rod 5e penetrates through the second connecting plate 5a and the second mounting plate 5b, and the push head 5f, the pressing plate 5g and the spring 5h are assembled on the push rod 5 e.
In the device and the method, the elastic contact piece 7 is an elastic deformation structure with deformable radial dimension, after the elastic contact piece 7 is assembled into the outer peripheral surface 1e1, the elastic contact piece 7 is in a free state or a squeezing state, so that stable contact connection between the elastic contact piece 7 and the outer peripheral surface 1e1 can be improved, then the elastic contact piece 7 is continuously pushed, one end part of the elastic contact piece 7 is abutted against the mounting abutment 1e2, then the drain pipe 3 is inserted, the operation groove body 3c3 of the mounting section 3c is abutted against the other end part of the elastic contact piece 7, at the moment, the inner wall of the elastic contact piece 7 is contacted and abutted against the outer wall of the mounting rod body 3c1, and therefore axial stability of the mounting section 3c inserted between the mounting pipelines 1e can be improved. The setting of drain pipe 3 and sponge strip 4 can make the infiltration water in the 1 lateral wall of deep basal pit body flow to between support piece 2 and the extruded article 5 through drain pipe 3 for the infiltration water is collected to support piece 2 on, flows to drainage channel 1a through the fixed plate in, prevents that infiltration water is more in the 1 lateral wall of deep basal pit body, causes the 1 lateral wall of deep basal pit body to collapse. Considering the result of use of sponge strip 4, set up push rod 5e, go to promote push rod 5e through promoting head 5f, can extrude the infiltration water of absorbing in the sponge strip 4 to improve the effect of collecting of sponge strip 4 to the infiltration water.
Claims (10)
1. The device for preventing waterlogging based on deep foundation pit drainage is characterized by comprising a deep foundation pit body (1), wherein the deep foundation pit body (1) is arranged to be rectangular, drainage channels (1a) are arranged at four corners of the deep foundation pit body (1), the drainage channels (1a) are arranged to be circular, drainage connecting holes (1b) are formed in the four corners of each drainage channel (1a), a supporting piece (2) is arranged on the inner wall of the deep foundation pit body (1), the supporting pieces (2) are spliced together and attached to the inner wall of the deep foundation pit body (1), at least one drainage pipe (3) is arranged on each supporting piece (2), each drainage pipe (3) is internally provided with a sponge bar (4), a plurality of drainage holes (3a) are formed in the outer wall of each drainage pipe (3), one end of each drainage pipe (3) is sealed, and the other end of each drainage pipe (3) is arranged to be, support piece (2) keep away from the one end terminal surface of deep basal pit body (1) and be equipped with extruded article (5), be equipped with certain clearance between extruded article (5) and support piece (2), extruded article (5) splice together, the one end tip of sponge strip (4) extends support piece (2) outside and flagging butt to support piece (2) on.
2. The deep foundation pit drainage waterlogging prevention device based on claim 1 is characterized in that at least one circle of water collection tank (1c) is arranged at the edge of the deep foundation pit body (1), the water collection tanks (1c) are coaxially arranged on the outer edge of the deep foundation pit body (1), each inner wall of the drainage channel (1a) is provided with a plurality of communication ports (1d), the communication ports (1d) penetrate through all the water collection tanks (1c), the multiple circles of water collection tanks (1c) are communicated through the communication ports (1d), and the communication ports (1d) are located at the top of the drainage pipe (3).
3. The deep foundation pit drainage and waterlogging prevention device based on claim 2, wherein the support member (2) comprises a first connecting plate (2a), a first mounting plate (2b) and a first water retaining strip (2c), wherein the first mounting plate (2b) is respectively attached to two end faces of the first connecting plate (2a) in the thickness direction, one first mounting plate (2b) is fixedly connected with the inner wall of the deep foundation pit body (1), the length and width of the first mounting plate (2b) are respectively greater than those of the first connecting plate (2a), a first clamping groove (2d) is formed between the two first mounting plates (2b) and the first connecting plate (2a), the first water retaining strip (2c) is detachably connected in the first clamping groove (2d), and the first water retaining strip (2c) is arranged in a shape of a Chinese character 'hui', and is wrapped around the first connecting plate (2 a).
4. The deep foundation pit drainage and waterlogging prevention device based on claim 3, wherein the extrusion piece (5) comprises a second connecting plate (5a), a second mounting plate (5b) and a second water blocking strip (5c), the second connecting plate (5a) is respectively coated with one second mounting plate (5b) along the two end faces in the thickness direction, one second mounting plate (5b) is fixedly connected with the inner wall of the deep foundation pit body (1), the length and width of the second mounting plate (5b) are respectively greater than the length and width of the second connecting plate (5a), a second clamping groove (5d) is formed between the two second mounting plates (5b) and the second connecting plate (5a), the second water blocking strip (5c) is detachably connected in the second clamping groove (5d), and the second water blocking strip (5c) is arranged in a shape like a Chinese character 'hui', and is wrapped around the second connecting plate (5 a).
5. A deep foundation pit drainage and waterlogging prevention device as claimed in claim 4, wherein the bottom of the support member (2) and the extrusion member (5) is provided with a connecting member (6), the connecting member (6) comprises a support base plate (6a), a first slot (6b) and a second slot (6c), the first slot (6b) and the second slot (6c) are respectively arranged at two ends of the support base plate (6a) in the thickness direction, and the support member (2) and the extrusion member (5) are respectively inserted into the first slot (6b) and the second slot (6 c).
6. The deep foundation pit drainage and waterlogging prevention device according to claim 5, wherein the extrusion member (5) further comprises a push rod (5e), a push head (5f), an extrusion plate (5g) and a spring (5h), the push rod (5e) penetrates through the second connecting plate (5a) and the second mounting plate (5b) and is in sliding connection with the second connecting plate (5a) and the second mounting plate (5b), a guide sleeve is arranged on one end face, far away from the second connecting plate (5a), of the second mounting plate (5b) and is in sliding connection with the push rod (5e), the push head (5f) is arranged on one end portion, far away from the support member (2), of the push rod (5e), the extrusion plate (5g) is arranged on one end portion, close to the support member (2), a certain gap is formed between the extrusion plate (5g) and the second mounting plate (5b) arranged close to the support member (2), be equipped with between stripper plate (5g) and second mounting panel (5b) that are close to support piece (2) and set up spring (5h), the one end and the second mounting panel (5b) of spring (5h) are connected, and the other end and stripper plate (5g) of spring (5h) are connected.
7. The device for preventing waterlogging based on deep foundation pit drainage according to claim 6, wherein the drainage pipe (3) comprises a drainage hole (3a), a drainage section (3b) and an installation section (3c), the drainage section (3b) and the installation section (3c) are integrally formed, installation pipelines (1e) matched with the drainage pipe (3) in number are buried in the inner wall of the deep foundation pit body (1), the installation section (3c) is inserted into the installation pipelines (1e), the drainage section (3b) is arranged outside the installation pipelines (1e), and the installation section (3c) is provided with a plurality of drainage sections (3 b).
8. A deep foundation pit based water drainage and waterlogging prevention device as claimed in claim 7, wherein the mounting pipe (1e) has an axial extension direction, the mounting pipe (1e) has a circumferential extension peripheral surface (1e1), the peripheral surface (1e1) is coaxially provided with a mounting platform (1e2), the end of the peripheral surface (1e1) far away from the mounting platform (1e2) is provided with two radial retaining holes (1e3), the inner wall of the peripheral surface (1e1) is provided with an axial retaining hole (1e4), the mounting section (3c) comprises a mounting rod body (3c1), a mounting cap body (3c2), an operation groove body (3c3), a clamping block (3c4), an opening hole (3c5) and a buckle (3c6), the mounting rod body (3c1) has an axial extension direction and is inserted into the mounting platform (1e2), and the end (2) of the mounting rod body (3c1) far away from the mounting platform (1e) is provided with the mounting cap body (35 2), the installation cap body (3c2) and the installation body of rod (3c1) between form the round operation cell body (3c3), the circumference distributes on the outer wall of operation cell body (3c3) has two joint piece (3c4), joint piece (3c4) with radial holding hole (1e3) one-to-one, and with radial holding hole (1e3) joint cooperation, seted up one on operation cell body (3c3) lateral wall trompil (3c5), trompil (3c5) set up between two joint piece (3c4), be equipped with on trompil (3c5) buckle (3c6), form between buckle (3c6) and trompil (3c5) adjustment tank (3c7), buckle (3c6) and operation cell body (3c3) all adopt the elasticity material to make, buckle (3c6) and axial holding hole (1e4) joint cooperation.
9. The device for preventing waterlogging based on deep foundation pit drainage according to claim 8, wherein an elastic contact piece (7) is detachably arranged between the operation groove body (3c3) and the installation platform (1e2), the elastic contact piece (7) has an axial extension direction, two ends of the elastic contact piece (7) in the axial direction are respectively abutted to the end portions of the operation groove body (3c3) and the installation platform (1e2), and the elastic contact piece (7) is of an elastic deformation structure with a deformable radial dimension.
10. A method for preventing waterlogging based on deep foundation pit drainage is characterized by comprising the following steps:
the water collecting grooves (1c) have the function of collecting rainwater at the peripheral edge of the deep foundation pit body (1), and the rainwater can enter the water collecting grooves (1c) which are smaller than the water collecting grooves (1c) by one circle in sequence from the water collecting grooves (1c) of the large circle and finally flow out of the communication openings (1 d);
water permeates into the side wall of the deep foundation pit body (1) from the ground, permeates into the side wall of the deep foundation pit body (1), moves to the position of the drain pipe (3) in the side wall of the deep foundation pit body, and enters the drain pipe (3) through a drain hole (3a) arranged on the drain pipe (3);
the permeated water flows in the drain pipe (3) and flows to the opening end of the drain pipe (3), and finally flows out from the opening end of the drain pipe (3) and flows into the drain channel (1 a);
the drainage connecting hole (1b) in the drainage channel (1a) is communicated with a water pump, and then the rainwater accumulated in the drainage channel (1a) is discharged out of the foundation pit body through the water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472227.1A CN111733845A (en) | 2020-05-29 | 2020-05-29 | Device and method for preventing waterlogging based on deep foundation pit drainage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010472227.1A CN111733845A (en) | 2020-05-29 | 2020-05-29 | Device and method for preventing waterlogging based on deep foundation pit drainage |
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| CN111733845A true CN111733845A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010472227.1A Withdrawn CN111733845A (en) | 2020-05-29 | 2020-05-29 | Device and method for preventing waterlogging based on deep foundation pit drainage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112814000A (en) * | 2020-12-30 | 2021-05-18 | 北京观唐城投建设有限公司 | Foundation pit dewatering and drainage structure and construction method thereof |
| CN114908785A (en) * | 2022-05-16 | 2022-08-16 | 郭福杰 | Drainage device for construction site foundation pit construction |
| CN115324089A (en) * | 2022-08-16 | 2022-11-11 | 王新华 | Deep foundation pit structure with drainage side wall gushes water |
| 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 |
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| CN104085331A (en) * | 2014-06-23 | 2014-10-08 | 苏州中航中振汽车饰件有限公司 | Inserting-connection assembly for automobile seat headrest |
| CN108978692A (en) * | 2018-09-12 | 2018-12-11 | 浙江三凯工程管理有限公司 | Water drainage of deep foundation pit system |
| CN110093931A (en) * | 2019-04-28 | 2019-08-06 | 四川航天建筑工程有限公司 | A kind of civil construction drainage of foundation pit structure and its construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104085331A (en) * | 2014-06-23 | 2014-10-08 | 苏州中航中振汽车饰件有限公司 | Inserting-connection assembly for automobile seat headrest |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112814000A (en) * | 2020-12-30 | 2021-05-18 | 北京观唐城投建设有限公司 | Foundation pit dewatering and drainage structure and construction method thereof |
| CN114908785A (en) * | 2022-05-16 | 2022-08-16 | 郭福杰 | Drainage device for construction site foundation pit construction |
| CN114908785B (en) * | 2022-05-16 | 2024-01-26 | 郭福杰 | Drainage device for construction of foundation pit of building site |
| CN115324089A (en) * | 2022-08-16 | 2022-11-11 | 王新华 | Deep foundation pit structure with drainage side wall gushes water |
| 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: 20201002 |