CN114960710A - Foundation pit dewatering structure and dewatering method - Google Patents
Foundation pit dewatering structure and dewatering method Download PDFInfo
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- CN114960710A CN114960710A CN202210353719.8A CN202210353719A CN114960710A CN 114960710 A CN114960710 A CN 114960710A CN 202210353719 A CN202210353719 A CN 202210353719A CN 114960710 A CN114960710 A CN 114960710A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 175
- 238000005086 pumping Methods 0.000 claims description 29
- 238000001556 precipitation Methods 0.000 claims description 15
- 239000004575 stone Substances 0.000 claims description 15
- 244000309464 bull Species 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 101150054854 POU1F1 gene Proteins 0.000 description 12
- 239000002689 soil Substances 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- 239000003673 groundwater Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
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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
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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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
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The utility model relates to a foundation ditch dewatering structure and dewatering method belongs to foundation ditch dewatering technical field, and it includes the foundation ditch, open drain has been seted up on foundation ditch ground, open drain bottom has seted up the sump pit, be provided with the filter cartridge in the foundation ditch, be provided with inlet tube and outlet pipe on the filter cartridge, the other end of inlet tube gos deep into in the sump pit, the other end of outlet pipe is used for connecting the piece that takes out water, just be located in the filter cartridge the inlet tube with be provided with the filter screen between the outlet pipe, be provided with the clearance subassembly in the filter screen, the clearance subassembly is used for right the filter screen clears up. This application helps improving the earth influence sump pit drainage problem in the sump pit.
Description
Technical Field
The application relates to the technical field of foundation pit dewatering, in particular to a foundation pit dewatering structure and a dewatering method.
Background
The foundation pit refers to a soil pit excavated at a foundation design position according to the base elevation and the base plane size, when the foundation pit is excavated, if the underground water level is higher than the excavation bottom surface, underground water can continuously infiltrate into the pit, and foundation pit dewatering is dewatering work performed to ensure that the foundation pit can be constructed under a dry condition.
The existing foundation pit dewatering generally adopts open drain and sump pit dewatering. The open trench and the water collecting well are generally excavated around the bottom surface of the foundation pit, the water collecting well is excavated on the inner surface of the bottom end of the open trench towards a soil layer containing underground water, the underground water can permeate into the water collecting well through the inner side wall of the water collecting well, the underground water seeped out of the side wall of the open trench can be gathered into the water collecting well, and then the water in the water collecting well is pumped out of the foundation pit through a water pump.
In the process of implementing the present application, the inventors found that the above-mentioned technology has at least the following problems: because the groundwater that constantly oozes on the inside wall of open ditches and collector well for the inside wall of open ditches and collector well takes place easily to collapse, and the earth that collapses blocks up the water pump easily, and then influences the collector well drainage.
Disclosure of Invention
In order to improve the earth influence sump pit drainage problem in the sump pit, this application provides a foundation ditch precipitation structure and precipitation method.
The application provides a foundation ditch precipitation structure and precipitation method adopts following technical scheme:
the utility model provides a first aspect, this application provides a foundation ditch precipitation structure adopts following technical scheme:
the utility model provides a foundation pit dewatering structure, includes the foundation ditch, open drain has been seted up on foundation ditch ground, the sump pit has been seted up to the open drain bottom, be provided with the filter cartridge in the foundation ditch, be provided with inlet tube and outlet pipe on the filter cartridge, the other end of inlet tube is deepened in the sump pit, the other end of outlet pipe is used for connecting the piece that takes out water, just be located in the filter cartridge the inlet tube with be provided with the filter screen between the outlet pipe, be provided with the clearance subassembly in the filter screen, the clearance subassembly is used for right the filter screen clears up.
Through adopting above-mentioned technical scheme, in the water in the sump pit entered into the filter box along the inlet tube under the effect of piece of drawing water, was provided with the filter screen in the filter box, and the filter screen helps filtering earth to the clearance subassembly helps clearing up the earth of adhesion on the filter screen, so that avoid earth to block up the filter screen, and then improve earth and influence sump pit drainage problem.
In a specific can embodiment, the clearance subassembly is including setting up the filter screen is close to the brush of one side of outlet pipe, brush silk orientation on the brush the filter screen and with the filter screen contact, be fixed with the bull stick on the brush, the bull stick is kept away from the one end rotation of brush is connected on the inside wall of filter cartridge, be provided with the driving piece on the bull stick, the driving piece is used for the drive the bull stick rotates.
Through adopting above-mentioned technical scheme, rotate through driving piece drive bull stick, the bull stick drives the brush and rotates, and then brush silk on the brush can be brushed and swept accumulational earth on the filter screen, and earth on the filter screen can fall on the one side that the filter screen is close to the inlet tube after being swept down by the brush, and earth is along with rivers to the direction motion of being close to the outlet pipe, then the filter screen can be filtered once more to the earth that the brush was swept down.
In a specific embodiment, the driving member is a turbine blade, the turbine blade is annularly distributed on the side surface of the rotating rod, and one end of the turbine blade is fixed on the rotating rod.
Through adopting above-mentioned technical scheme, when extracting the water in the sump pit through the suction pump, the water in the inlet tube filter cartridge can be full of whole filter cartridge to water in the filter cartridge can lead to one side that flows from the one side that is close to the inlet tube and be close to the outlet pipe, and turbine fan blade can take place to rotate along with the flow of water, drives the bull stick and takes place to rotate, and then can drive the brush and rotate, realizes the clearance to the filter screen.
In a specific possible embodiment, the filter box comprises a box body and a bottom plate, wherein the bottom end of the box body is arranged in an open manner, the box body is positioned above the bottom plate, and the bottom plate is connected with the box body in a sealing manner; the internal surface of box body has seted up the breach, the edge of filter screen all is located in the breach.
Through adopting above-mentioned technical scheme, through taking off the box body from the bottom plate to take out the filter screen in the breach of box body, can change the filter screen that leads to the damage with the brush friction for a long time.
In a specific implementation scheme, a containing groove is formed in the top surface of the bottom plate, a rubber pad is arranged in the containing groove, and the open end of the box body extends into the containing groove and abuts against the rubber pad; the fixing device is characterized in that a fixing plate is arranged on the box body, a notch is formed in one end, far away from the box body, of the fixing plate, the notch penetrates through the fixing plate in the vertical direction, a fixing rod rotates on the bottom plate, one end, far away from the bottom plate, of the fixing rod penetrates through the notch, a nut is in threaded connection with the fixing rod, and the nut abuts against the top end of the fixing plate.
Through adopting above-mentioned technical scheme, through rotating the nut, make the nut support on the top of fixed plate, help tightly supporting the box body bottom on the rubber pad, and then realize the sealing connection of bottom plate and box body, rotate nut to nut and fixed plate separation, roll out the dead lever from the breach after that, can dismantle bottom plate and box body.
In a specific implementation scheme, a support box is arranged in the water collecting well, one end of the water inlet pipe, which is far away from the filter box, extends into the support box, and a through hole is formed in the support box; a space is reserved between the supporting box and the inner side wall of the water collecting well, and stones are filled in the space.
By adopting the technical scheme, the underground water seeped out of the inner side wall of the water collecting well can enter the supporting box through the stones and the through holes in the supporting box, and the stones and the supporting box play a role in supporting the inner side wall of the water collecting well, so that collapse of the inner side wall of the water collecting well can be avoided; while the stones help to filter the groundwater seeping from the inner side walls of the sump well.
In a specific possible embodiment, the supporting box comprises a bottom box and a plurality of extension boxes, the bottom box is located at the bottom end of the water collecting well, the top end of the bottom box is in an open arrangement, the extension boxes are located above the bottom box, the top end and the bottom end of each extension box are in an open arrangement, and the extension boxes are distributed in the vertical direction and are detachably connected with each other.
Through adopting above-mentioned technical scheme, put into the bottom of sump pit with end box to accumulate the extension box gradually on the box to end, the distance of the top of extension box and the top of sump pit is less than half of extension box height, so that install end box and extension box according to the degree of depth of sump pit.
In a specific possible implementation scheme, a box cover is arranged on the extension box positioned at the top end, and a plurality of water leakage holes are formed in the box cover.
Through adopting above-mentioned technical scheme, in water in the open ditch or the water that falls from the foundation ditch inside wall can fall into the support box through the lid, the lid helps blockking the stone of large granule to avoid the stone of large granule to exert an influence to sump pit drainage.
In a specific implementation mode, a plurality of supporting rods are arranged at the bottom end of the open trench, the supporting rods are arranged along the vertical direction, and the bottom ends of the supporting rods are inserted into the bottom surface of the open trench; the supporting rods are distributed along the length direction of the open trench, a supporting net is connected between every two adjacent supporting rods, and the supporting net is in contact with the inner side wall of the open trench.
Through adopting above-mentioned technical scheme, help carrying out interim protection of preventing collapsing to earth on the side surface of open drain through strutting the net to can change suitable open drain lateral wall height's a support net and bracing piece through pulling up the bracing piece from the open drain bottom surface, make the installation of a support net comparatively simple.
In a second aspect, the present application provides a precipitation method, which adopts the following technical scheme:
a precipitation method is based on the foundation pit precipitation structure and comprises the following steps:
s1: carrying out support protection on the inner side wall of the open trench;
s2: carrying out support protection on the inner side wall of the water collecting well;
s3: installing a dewatering device: placing a filter box at the bottom end of a foundation pit, placing a water pumping piece at the top end of the foundation pit, connecting the filter box and the water pumping piece through a pipeline, placing a water inlet pipe into the water collecting well, and connecting the water inlet pipe and the water pumping piece;
s4: starting the water pumping piece;
s5: monitoring the water condition in the water collecting well and taking corresponding measures;
s6: and after the water in the water collecting well is not available, closing the water pumping piece, and executing the step S5 until the inner side wall of the open trench and the water collecting well is dry.
By adopting the technical scheme, the anti-collapse protection can be conveniently carried out on the side wall of the open ditch and the side wall of the water collecting well, the amount of silt falling into the water collecting well is reduced, and the filter box is arranged, so that the silt in the water extracted by the water pumping piece can be filtered completely, the blockage of the silt on the water pumping piece or a pipeline and the like can be avoided, and the problem that the soil in the water collecting well influences the drainage of the water collecting well can be solved; monitoring water level changes in the sump well is performed to drain the sump well.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the water in the water collecting well enters the filter box along the water inlet pipe under the action of the water pumping piece, the filter screen is arranged in the filter box and is beneficial to filtering soil, and the cleaning assembly is beneficial to cleaning the soil adhered to the filter screen so as to avoid the soil from blocking the filter screen and further improve the problem that the soil influences the drainage of the water collecting well;
2. the side wall of the foundation pit, the side wall of the open trench and the side wall of the water collecting well are protected against collapse, so that the amount of silt falling into the water collecting well is reduced;
3. monitoring water level changes in the sump well is performed in order to drain the sump well.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a sectional view of a foundation pit according to an embodiment of the present application.
Fig. 3 is a schematic view of the overall structure of the filter cassette according to the embodiment of the present application.
Fig. 4 is a cross-sectional view of a filter cassette of an embodiment of the present application.
Figure 5 is a schematic structural view of a bracing assembly according to an embodiment of the application.
Fig. 6 is an exploded view of a support box according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram for showing a positional relationship between a support bar and a supporting net according to an embodiment of the present application.
Description of reference numerals: 1. a foundation pit; 11. opening the ditch; 12. a water collecting well; 2. a filter cartridge; 21. a water inlet pipe; 22. a water outlet pipe; 23. a box body; 231. a containing groove; 24. a base plate; 241. a placement groove; 242. a rubber pad; 25. a fixing plate; 251. a notch; 26. fixing the rod; 27. a nut; 28. filtering with a screen; 3. a support assembly; 31. a support box; 311. a through hole; 312. a bottom case; 313. a lengthening box; 3131. a groove; 3132. convex edges; 314. a box cover; 3141. a dry water leakage hole; 32. stones; 4. cleaning the assembly; 41. a brush; 42. a rotating rod; 43. turbine blades; 51. a support bar; 52. a support net.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses foundation ditch precipitation structure adopts following technical scheme:
referring to fig. 1 and 2, the foundation pit dewatering structure comprises a foundation pit 1 and an open trench 11, wherein the side surface of the foundation pit 1 is obliquely arranged and forms a slope, the open trench 11 is arranged around the bottom surface of the foundation pit 1, and a water collecting well 12 is arranged on the bottom surface of the open trench 11; the filter box 2 is arranged at the bottom of the foundation pit 1, the filter box 2 is connected with a water inlet pipe 21 and a water outlet pipe 22, one end of the water inlet pipe 21, which is far away from the filter box 2, is inserted into the water collecting well 12, one end of the water outlet pipe 22, which is far away from the filter box 2, is connected with a water pumping piece, the water pumping piece is arranged on the ground of the slope top of the foundation pit 1, and the filter box 2 is used for filtering water in the water collecting well 12; a support component 3 is arranged in the water collecting well 12, and the support component 3 is used for supporting the inner side wall of the water collecting well 12. When carrying out precipitation to foundation ditch 1, supporting component 3 helps avoiding the 12 inside walls of sump pit to take place to collapse, and the water in the 12 interior water collecting wells simultaneously can discharge to the 1 outside of foundation ditch after filtering by filter box 2 to avoid earth to block up pipeline or pumping spare, and then realize influencing the improvement of the 12 drainage problems of sump pit to earth.
Referring to fig. 3 and 4, the filter box 2 includes a box body 23 and a bottom plate 24, the bottom end of the box body 23 is open, a placing groove 241 is opened on the top end of the bottom plate 24, a rubber pad 242 is arranged in the placing groove 241, and the open end of the box body 23 extends into the placing groove 241 and abuts against the rubber pad 242. A plurality of fixing plates 25 are fixed on the side surface of the box body 23, and a notch 251 is formed at one end of each fixing plate 25 far away from the box body 23; the top end of the bottom plate 24 is rotatably connected with a plurality of fixing rods 26, the fixing rods 26 are in one-to-one correspondence with the fixing plates 25, one end of each fixing rod 26, which is far away from the bottom plate 24, penetrates through a notch 251 on the corresponding fixing plate 25 and is in threaded connection with a nut 27, and each nut 27 abuts against the corresponding fixing plate 25. The open end of the box 23 is tightly pressed against the rubber pad 242 on the bottom plate 24 by tightening the nut 27 until the nut 27 is tightly pressed against the fixing plate 25, thereby achieving the sealing connection between the box 23 and the bottom plate 24.
Referring to fig. 4, the box body 23 is connected between the water inlet pipe 21 and the water outlet pipe 22, the filter screen 28 is disposed in the box body 23 and between the water inlet pipe 21 and the water outlet pipe 22, the inner surface of the box body 23 corresponding to the filter screen 28 is provided with an accommodating groove 231, the top end and the side end of the filter screen 28 are disposed in the accommodating groove 231 of the box body 23, the top end of the bottom plate 24 is also provided with an accommodating groove 231, and the bottom end of the filter screen 28 is disposed in the accommodating groove 231 on the bottom plate 24; the water pumping part can be a centrifugal pump, an injection pump or an air compressor and the like, and in the embodiment, the water pumping part is a centrifugal pump; the water in the water collecting well 12 is pumped through the water inlet pipe 21 by the centrifugal pump, and the water in the water inlet pipe 21 enters the filter box 2, is filtered by the filter screen 28 and is discharged from the water outlet pipe 22.
Considering that soil may block the screen 28 after the screen 28 is used for a long time to filter water in the water collecting well 12, referring to fig. 4, a cleaning assembly 4 for cleaning the screen 28 is provided in the filter box 2 and on a side of the screen 28 close to the water outlet pipe 22, and the cleaning assembly 4 helps to clean the soil on the screen 28 so as to prevent the soil from blocking the screen 28 and affecting precipitation.
Referring to fig. 4, the cleaning assembly 4 includes a brush 41 and a rotating rod 42, wherein filaments of the brush 41 face the strainer 28 and can protrude from a filtering hole of the strainer 28, the rotating rod 42 is disposed along a water flow direction, and one end of the rotating rod 42 is connected to the brush 41, and the other end of the rotating rod 42 is connected to an inner sidewall of the case 23 through a bearing. The rotating rod 42 is connected with a driving member for driving the rotating rod 42 to rotate, in this embodiment, the driving member is three turbine blades 43, the three turbine blades 43 are annularly distributed on the side surface of the rotating rod 42, and one end of each turbine blade 43 is fixed on the rotating rod 42. When water in the water collecting pit is extracted, the filter box 2 is filled with water, the turbine fan blades 43 are influenced by the water flow to rotate, the rotating rod 42 is driven to rotate together, the brush 41 is driven to rotate, and then the filaments of the brush 41 can brush the filter screen 28.
Referring to fig. 5, the supporting assembly 3 includes a supporting box 31 disposed in the water collecting well 12, the supporting box 31 is provided with a plurality of through holes 311, a certain space is left between the supporting box 31 and the inner surface of the water collecting well 12, and a space between the supporting box 31 and the water collecting well 12 is filled with stones 32, so that groundwater seeping from the inner side wall of the water collecting well 12 enters the supporting box 31 through the stones 32. The stones 32 help to filter the groundwater seeping from the inner side walls of the sump 12 so as to prevent the soil in the groundwater from blocking the through holes 311 of the support box 31; the support box 31 plays a role in supporting the inner side wall of the water collecting well 12, and helps to prevent the inner side wall of the water collecting well 12 from collapsing.
Referring to fig. 6, the supporting box 31 includes a bottom box 312 and a plurality of extension boxes 313, the top end of the bottom box 312 is open, the top end and the bottom end of each extension box 313 are both open, the extension boxes 313 are located at the open end of the bottom box 312, a groove 3131 is formed in the top end of the bottom box 312 and the top end of each extension box 313, a protruding ridge 3132 is formed in the bottom end of each extension box 313, the plurality of extension boxes 313 are distributed along the vertical direction, and between two adjacent extension boxes 313, a protruding ridge 3132 of an upper extension box 313 is inserted into a groove 3131 of a lower extension box 313, a protruding ridge 3132 of an extension box 313 located at the bottommost layer is inserted into a groove 3131 at the top end of the bottom box 312, so as to achieve detachable connection between the bottom box 312 and the plurality of extension boxes 313. By means of the detachable connection between the extension box 313 and the bottom box 312, it is possible to assemble the same according to the specific height of the sump well 12.
Referring to fig. 6, the top end of the uppermost extension box 313 is provided with a box cover 314, a protruding edge 3132 is fixed on the bottom surface of the box cover 314, and the protruding edge 3132 on the box cover 314 is inserted into a groove 3131 at the top end of the extension box 313 to realize the connection between the extension box 313 and the box cover 314. The box cover 314 is provided with a plurality of water leakage holes 3141, and large stones may be mixed in the water falling on the box cover 314 from the open trench 11 or the slope top of the foundation pit 1, so that the box cover 314 is helpful for filtering large stones.
Referring to fig. 2 and 7, a plurality of support rods 51 are fixed at the bottom end of the open trench 11, each support rod 51 is arranged in the vertical direction, the plurality of support rods 51 are distributed in the open trench 11 at equal intervals along the length direction of the open trench 11, the bottom ends of the support rods 51 are inserted into the inner surface of the bottom end of the open trench 11, a support net 52 is connected between two adjacent support rods 51, and the support net 52 is located on the side surface of the open trench 11 close to the slope of the foundation pit 1, so that the support net 52 can protect the soil on the inner side wall of the open trench 11 close to the slope of the foundation pit 1, and the collapse of the side surface of the open trench 11 is avoided.
The implementation principle of this application embodiment a foundation ditch precipitation structure does: the protection against collapse of the inner side wall of the open trench 11 is facilitated by the support net 52, and the stones 32 and the support boxes 31 facilitate the protection against collapse of the inner side wall of the water collection well 12 so as to prevent the inner side wall of the open trench 11 and the inner side wall of the water collection well 12 from collapsing. When the foundation pit 1 is lowered, water in the water collecting well 12 is filtered by the filter box 2 and then pumped out by the centrifugal pump along the water outlet pipe 22, and the filter box 2 helps to prevent the pipeline and the centrifugal pump from being blocked. And brush 41 in filter cartridge 2 will brush against filter screen 28 in filter screen 28, helping to prevent first filter screen 28 from becoming clogged with dirt.
The embodiment of the application also discloses a precipitation method based on above-mentioned foundation ditch precipitation structure, includes following step:
s1: carrying out support protection on the inner side wall of the open trench 11;
the concrete implementation of the supporting protection of the inner side wall of the open trench 11 is as follows:
s11: inserting a plurality of support rods 51 at equal intervals on the bottom surface of the open trench 11 and on one side close to the slope of the foundation pit 1;
s12: a support net 52 is connected between two adjacent support rods 51;
s2: carrying out support protection on the inner side wall of the water collecting well 12;
the concrete implementation of the support protection of the inner side wall of the water collecting well 12 is as follows:
s21: placing the support box 31 into the water collection well 12;
s22: filling stones 32 between the support box 31 and the inner side wall of the water collecting well 12;
the specific embodiment of placing the support box 31 into the sump well 12 is as follows:
s211: placing the bottom box 312 into the bottom end of the sump well 12;
s212: adding an extension box 313 into the water collecting well 12 until the distance from the top end of the extension box 313 to the inlet of the water collecting well 12 is less than half of the height of the extension box 313;
s213: the cover 314 is put on the top of the extended box 313 located at the highest position;
s3: installing a dewatering device: placing a filter box 2 at the bottom end of a foundation pit 1, placing a water pumping piece at the top end of the foundation pit 1, connecting the filter box 2 and the water pumping piece through a pipeline, placing a water inlet pipe 21 into a water collecting well 12, and connecting the water inlet pipe 21 with the water pumping piece;
the specific water pumping piece can be a centrifugal pump, an injection pump or an air compressor and the like;
s4: starting a water pumping piece;
s5: monitoring the water condition in the water collecting well 12 and taking corresponding measures;
the specific embodiment of monitoring the water condition in the water collecting well 12 and taking corresponding measures is as follows:
s51: performing water level detection and water level recording on the water collecting well 12 once every day, and closing the water pumping piece if the water level in the water collecting well 12 increases slowly according to the water level recording;
s52: performing water level detection twice a day and recording the water level of the water collecting well 12 which stops pumping, and starting a water pumping piece to pump water in the water collecting well 12 after the water collecting well 12 which stops pumping is full of water;
s53: according to the water level record, water level detection is carried out twice a day on the water collecting well 12 with larger water change, and the power of the water pumping piece is increased;
s6: after the water in the collector well 12 is not available, the water pumping member is closed, and step S5 is performed until the inner side walls of the open trench 11 and the collector well 12 are dried.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a foundation ditch precipitation structure, includes foundation ditch (1), open drain (11) have been seted up on foundation ditch (1) ground, sump pit (12), its characterized in that have been seted up to open drain (11) bottom: be provided with filter cartridge (2) in foundation ditch (1), be provided with inlet tube (21) and outlet pipe (22) on filter cartridge (2), the other end of inlet tube (21) is deep in sump pit (12), the other end of outlet pipe (22) is used for connecting the piece of drawing water, filter cartridge (2) are interior and be located inlet tube (21) with be provided with filter screen (28) between outlet pipe (22), be provided with clearance subassembly (4) in filter screen (28), clearance subassembly (4) are used for right filter screen (28) are cleared up.
2. A pit dewatering structure according to claim 1, wherein: clearance subassembly (4) are including setting up filter screen (28) are close to brush (41) of one side of outlet pipe (22), the brush-wire orientation on brush (41) filter screen (28) and with filter screen (28) contact, be fixed with bull stick (42) on brush (41), bull stick (42) are kept away from the one end rotation of brush (41) is connected on the inside wall of filter cartridge (2), be provided with the driving piece on bull stick (42), the driving piece is used for the drive bull stick (42) rotate.
3. A foundation pit dewatering structure according to claim 2, characterized in that: the driving part is a turbine fan blade (43), the turbine fan blade (43) is annularly distributed on the side surface of the rotating rod (42), and one end of the turbine fan blade (43) is fixed on the rotating rod (42).
4. A pit dewatering structure according to claim 3, wherein: the filter box (2) comprises a box body (23) and a bottom plate (24), the bottom end of the box body (23) is arranged in an open mode, the box body (23) is located above the bottom plate (24), and the bottom plate (24) is connected with the box body (23) in a sealing mode; a notch (251) is formed in the inner surface of the box body (23), and the edges of the filter screen (28) are located in the notch (251).
5. A foundation pit dewatering structure according to claim 4, characterized in that: a containing groove (231) is formed in the top surface of the bottom plate (24), a rubber pad (242) is arranged in the containing groove (231), and the open end of the box body (23) extends into the containing groove (231) and abuts against the rubber pad (242); be provided with fixed plate (25) on box body (23), the one end that box body (23) was kept away from to fixed plate (25) is seted up jaggedly (251), jaggedly (251) run through along vertical direction fixed plate (25), it has dead lever (26) to rotate on bottom plate (24), the one end that bottom plate (24) was kept away from to dead lever (26) passes jaggedly (251) and threaded connection has a nut (27), nut (27) support is in the top of fixed plate (25).
6. A pit dewatering structure according to claim 1, wherein: a supporting box (31) is arranged in the water collecting well (12), one end, far away from the filter box (2), of the water inlet pipe (21) extends into the supporting box (31), and a through hole (311) is formed in the supporting box (31); a space is reserved between the supporting box (31) and the inner side wall of the water collecting well (12), and stones (32) are filled in the space.
7. A foundation pit dewatering structure according to claim 6, characterized in that: the supporting box (31) comprises a bottom box (312) and a plurality of extension boxes (313), the bottom box (312) is located at the bottom end of the water collecting well (12), the top end of the bottom box (312) is arranged in an open mode, the extension boxes (313) are located above the bottom box (312) and the top end and the bottom end of each extension box (313) are arranged in an open mode, and the extension boxes (313) are distributed in the vertical direction and are adjacent to each other and are detachably connected with each other.
8. A pit dewatering structure according to claim 7, wherein: a box cover (314) is arranged on the extension box (313) positioned at the top end, and a plurality of water leakage holes (3141) are formed in the box cover (314).
9. A pit dewatering structure according to claim 1, wherein: the bottom end of the open trench (11) is provided with a plurality of support rods (51), the support rods (51) are arranged along the vertical direction, and the bottom ends of the support rods (51) are inserted into the bottom surface of the open trench (11); the supporting rods (51) are distributed along the length direction of the open trench (11), a supporting net (52) is connected between every two adjacent supporting rods (51), and the supporting net (52) is in contact with the inner side wall of the open trench (11).
10. A method of lowering water in a foundation pit according to any one of claims 1 to 9, including the steps of:
s1: the inner side wall of the open trench (11) is protected by support;
s2: the inner side wall of the water collecting well (12) is protected in a supporting way;
s3: installing a dewatering device: placing a filter box (2) at the bottom end of a foundation pit (1), placing a water pumping piece at the top end of the foundation pit (1), connecting the filter box (2) with the water pumping piece through a pipeline, placing a water inlet pipe (21) into the water collecting well (12), and connecting the water inlet pipe (21) with the water pumping piece;
s4: starting the water pumping piece;
s5: monitoring the water condition in the water collecting well (12) and taking corresponding measures;
s6: after the water in the water collecting well (12) is not available, the water pumping piece is closed, and step S5 is carried out until the inner side walls of the open ditch (11) and the water collecting well (12) are dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210353719.8A CN114960710A (en) | 2022-04-06 | 2022-04-06 | Foundation pit dewatering structure and dewatering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210353719.8A CN114960710A (en) | 2022-04-06 | 2022-04-06 | Foundation pit dewatering structure and dewatering method |
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| Publication Number | Publication Date |
|---|---|
| CN114960710A true CN114960710A (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210353719.8A Withdrawn CN114960710A (en) | 2022-04-06 | 2022-04-06 | Foundation pit dewatering structure and dewatering method |
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| Country | Link |
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| CN (1) | CN114960710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718086A (en) * | 2022-04-20 | 2022-07-08 | 福建省天柱建设工程有限公司 | Inclined support foundation pit supporting system and construction method |
-
2022
- 2022-04-06 CN CN202210353719.8A patent/CN114960710A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718086A (en) * | 2022-04-20 | 2022-07-08 | 福建省天柱建设工程有限公司 | Inclined support foundation pit supporting system and construction method |
| CN114718086B (en) * | 2022-04-20 | 2023-09-26 | 福建省天柱建设工程有限公司 | Inclined support foundation pit supporting system and construction method |
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Application publication date: 20220830 |
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