CN114960714B - Near-water foundation pit drainage seepage-proofing structure and construction method - Google Patents
Near-water foundation pit drainage seepage-proofing structure and construction method Download PDFInfo
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- CN114960714B CN114960714B CN202210741891.0A CN202210741891A CN114960714B CN 114960714 B CN114960714 B CN 114960714B CN 202210741891 A CN202210741891 A CN 202210741891A CN 114960714 B CN114960714 B CN 114960714B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 181
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000004576 sand Substances 0.000 claims description 43
- 238000005086 pumping Methods 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 20
- 230000002265 prevention Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 101150054854 POU1F1 gene Proteins 0.000 description 8
- 239000013049 sediment Substances 0.000 description 7
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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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
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/22—Lining sumps in trenches or other foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention discloses a near-water source foundation pit drainage seepage-proofing structure and a construction method, which belong to the technical field of foundation pit construction.
Description
Technical Field
The invention relates to the technical field of foundation pit construction, in particular to a near-water source foundation pit drainage seepage-proofing structure and a construction method.
Background
The measures required for ensuring the safety and stability of the underground space formed by excavating the ground downwards during the construction of the underground structure, such as soil retaining structure, groundwater control, environmental protection and the like 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 contents of the method include engineering investigation, supporting structure design and construction, earth excavation and backfill, groundwater control, informatization construction, surrounding environment protection and the like.
After digging the foundation ditch, the problem of infiltration often appears in the foundation ditch, can influence normal construction process at the initial stage of carrying out the construction, and the silt that carries in the process foundation ditch of drawing water can lead to the drain pipe to block up to influence effect and the efficiency of drainage.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problem to be solved by the invention is to provide the foundation pit drainage seepage-proofing structure which improves the drainage efficiency of the foundation pit, avoids blocking to influence the drainage effect and simultaneously avoids the problem of water seepage of the foundation pit in the drainage process.
To achieve the purpose, the invention adopts the following technical scheme:
the invention provides a near-water source foundation pit drainage seepage-proofing structure, which comprises a foundation pit, wherein waterproof baffles are arranged at the periphery and the bottom of the foundation pit, a protection frame is further arranged on the waterproof baffles at the periphery of the foundation pit, fastening anchor rods are arranged on the protection frame, the fastening anchor rods penetrate through the waterproof baffles, and a plurality of groups of anchoring strips are arranged on the outer wall of the fastening anchor rods at equal intervals;
the foundation ditch bottom is provided with the escape canal of intercommunication each other all around, the intersection department of escape canal is provided with the sump pit, be provided with drainage device in the sump pit, drainage device inside is provided with the pumping part and avoids the foundation ditch inner wall to take place to collapse, leads to silt to remain in the escape canal and sump pit, has influenced the timeliness of foundation ditch drainage, leads to time to lengthen the time limit for a project, has increased staff's working strength simultaneously.
The protection frame comprises a plurality of groups of transverse fixing rods and vertical fixing rods which are staggered, a waterproof sealing layer is arranged between rectangular sections formed by the staggered transverse fixing rods and the staggered vertical fixing rods and is coated on a waterproof baffle plate, so that on one hand, the anti-seepage effect is enhanced, and on the other hand, the collapse condition of the inner wall of a foundation pit is avoided.
The preferable technical scheme of the invention is that the spike end of the fastening anchor rod passes through the intersection of the transverse fixing rod and the vertical fixing rod and is arranged in the pit body, the fastening anchor rods are distributed from top to bottom in sequence and are gradually lengthened along with the downward length of the inner wall of the foundation pit, the supporting force of the inner wall of the foundation pit is increased, and the collapse risk is reduced.
The water draining device comprises a water collecting tank arranged in a water collecting pit, a sealing cover with a handle is arranged on the top side of the water collecting tank in a sealing mode, filtering holes are formed in the side walls of the water collecting tank corresponding to the drainage ditches on two sides, a sand removing device is arranged on the sealing cover through a fixing frame, the water pumping component is located in the water collecting tank, and sediment is carried in the process that accumulated water enters the water collecting tank, so that drainage is prevented from being blocked.
The water collecting tank is characterized in that a water guide plate is arranged below the corresponding filtering holes on the inner wall of the water collecting tank, and one side of the water guide plate is connected with a filter screen, so that water enters the bottom of the water collecting tank through the filter screen, sediment in accumulated water is filtered, and the influence on the drainage effect and drainage efficiency is avoided.
The sand removing device comprises a rotating shaft which is rotationally connected with support legs at two ends of a fixing frame, one end of the rotating shaft is connected with a motor, two groups of rotating shafts are rotationally connected with a guide cylinder, sand removing plates which are in sliding connection along the outer wall of the guide cylinder are arranged between the outer walls of the two groups of rotating shafts, a sand inlet is formed in the top side of the guide cylinder, and a plurality of groups of sand filtering holes are formed in the outer wall of the guide cylinder, so that sand removing effect is achieved, the efficiency of water draining is further guaranteed, and blocking caused by sand is avoided.
The preferable technical scheme of the invention is that the two sides of the sand removing area of the sand removing plate are provided with the material guiding plates, the material guiding plates are connected with the two ends of the sand inlet, so that the removal of sediment in accumulated water is completed, and the sand removing efficiency is improved.
The water pumping component comprises a water pumping pump arranged in the water collecting tanks, one end of the water pumping pump is connected with a water pumping pipe, a water collecting pipe is connected between the water pumping pipes in the two groups of water collecting tanks, and a drain pipe is connected to the water collecting pipe, so that accumulated water in the foundation pit is discharged, and the accumulated water is prevented from influencing later construction.
A construction method of a near-water foundation pit drainage seepage-proofing structure comprises the following steps:
step 1: marking the position of a foundation pit to be excavated according to the requirements of a construction scheme, and then excavating, wherein the inner wall of the excavated foundation pit is inclined towards the bottom direction of the foundation pit;
step 2: four mutually communicated drainage ditches are excavated downwards around the bottom of the foundation pit, and water collection pits are formed by continuing to excavate downwards at the intersections of the drainage ditches;
step 3: installing waterproof baffles along the periphery and the bottom of the inner wall of a foundation pit, fixing a protection frame formed by mutually staggered transverse fixing rods and vertical fixing rods on the waterproof baffles through fastening anchor rods, coating waterproof sealing layers in rectangular intervals formed by the staggered transverse fixing rods and vertical fixing rods, and fixing the waterproof baffles to further strengthen the anti-seepage effect;
step 4: the sand removing device is fixed on the sealing cover through the fixing frame, the water collecting tank with the sealing cover is placed in the water collecting pit, the water suction pump is placed at the bottom of the water collecting tank, the placement position of the water suction pump is lower than the depth of the drainage ditch, the water suction pipe, the water collecting pipe and the drainage pipe are sequentially connected, the water inlet end of the water suction pipe is connected with the water suction pump, and the drainage pipe is fixed on the protection frame through the fixing piece;
step 5: the water in the drainage ditch enters the water collection tank through the filtering holes after entering the water collection pit, and enters the bottom of the water collection tank through the filtering net under the action of the water guide plate, and the water suction pump is started to pump out the water and discharge the water from the drainage pipe.
Through the technical scheme, when ponding takes place for the foundation ditch, can in time discharge ponding in the foundation ditch, utilize the effect of waterproof baffle can avoid the foundation ditch to take place the problem of infiltration before the drainage, the use of cooperation protection frame and fastening stock has strengthened the supporting role of foundation ditch inner wall, reduces the risk that takes place to collapse, guarantees to accomplish the getting rid of ponding, utilizes the sand removal device to clear away ponding and silt on the header tank outer wall, avoids ponding to carry silt to cause the jam to the drain pipe from the drain pipe discharge in-process to influence the efficiency and the drainage effect of drainage.
The beneficial effects of the invention are as follows: according to the invention, through the pumping action of the water pump, water entering the water collection tank from the drainage ditch through the water collection pit is pumped out and discharged in time, so that unnecessary influence of accumulated water on later construction is avoided, the efficiency and effect of drainage are ensured, during drainage, accumulated water enters the water collection tank through the filtering holes to perform preliminary removal of sediment, and enters the bottom of the water collection tank after being filtered again through the filtering screen under the action of the water guide plate, thus the water pump pumps away the accumulated water and discharges the accumulated water from the drainage pipe, the blockage of the drainage pipe caused by sediment accumulation is avoided, and the drainage efficiency is improved; the waterproof baffle that sets up on the foundation ditch inner wall can avoid producing the circumstances of infiltration in the foundation ditch, through the cooperation of protection frame and fastening stock, increases the holding power of foundation ditch inner wall, avoids the foundation ditch inner wall to take place to collapse, leads to silt to remain in escape canal and sump pit, has influenced the timeliness of foundation ditch drainage, leads to time to lengthen the time limit for a project, has increased staff's working strength simultaneously.
The foundation pit drainage seepage-proofing structure improves the foundation pit drainage efficiency, avoids blocking to influence the drainage effect, and simultaneously avoids the problem of seepage of the foundation pit in the drainage process.
Drawings
FIG. 1 is a schematic view of a foundation pit drainage seepage-proofing structure provided in an embodiment of the invention;
FIG. 2 is a schematic view of a drainage device according to an embodiment of the present invention;
FIG. 3 is a side view of the structure of the sand removing device provided in the embodiment of the present invention;
fig. 4 is a cross-sectional view of a sand removing device according to an embodiment of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a foundation pit; 11. a waterproof baffle; 12. a protective frame; 13. fastening an anchor rod; 14. an anchor bar; 15. a waterproof sealing layer; 2. a drainage ditch; 3. a water collecting pit; 4. a drainage device; 41. a water collection tank; 42. sealing cover; 43. a handle; 44. a filter hole; 5. a water pumping component; 51. a water pumping pipe; 52. a water collecting pipe; 53. a drain pipe; 54. a water pump; 6. a fixing frame; 7. a sand removing device; 71. a guide cylinder; 72. a rotating shaft; 73. a sand removing plate; 731. a material guide plate; 74. a motor; 75. a sand inlet; 76. sand filtering holes; 8. a water guide plate; 9. and (5) a filter screen.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
The utility model provides a nearly water source foundation ditch drainage seepage prevention structure, includes foundation ditch 1, foundation ditch 1 is provided with waterproof baffle 11 along with the bottom all around, still be provided with protection frame 12 on waterproof baffle 11 around the foundation ditch 1, be provided with fastening stock 13 on the protection frame 12, fastening stock 13 passes waterproof baffle 11, and equidistant a plurality of groups anchor strip 14 that are provided with on its outer wall, foundation ditch 1 bottom is provided with the escape canal 2 of intercommunication each other all around, the crossing department of escape canal 2 is provided with sump pit 3, be provided with drainage device 4 in the sump pit 3, drainage device 4 inside is provided with pumping part 5, through the cooperation of pumping part 5 and drainage device 4, in time outwards take out drainage canal 2 outside the water that gets into drainage device 4 through sump pit 3, avoid ponding to construct the condition that causes unnecessary influence to later stage work, guarantee the efficiency and the effect of drainage, waterproof baffle 11 that set up on foundation ditch 1 inner wall can avoid producing in the foundation ditch 1, through the cooperation of protection frame 12 and fastening stock 13, avoid 1 inner wall to take place to collapse and lead to drain ditch 2 and sump pit 3, the timely time is prolonged the influence of working strength of the foundation ditch, has prolonged the staff.
As a possible implementation manner of this scheme, preferably, the protection frame 12 includes a plurality of groups of crisscross horizontal dead lever and vertical dead lever each other, the rectangle interval that horizontal dead lever and vertical dead lever crisscross formation is provided with waterproof sealing layer 15, and coats on waterproof baffle 11, through the protection frame 12 of crisscross setting, can improve waterproof baffle 11's tightness to cooperate waterproof sealing layer 15's effect, strengthen the prevention of seepage effect on the one hand, on the other hand avoid foundation ditch 1 inner wall to take place the condition of collapsing.
As a possible implementation manner of this scheme, preferably, the spike end of the fastening anchor rod 13 passes through the intersection of the transverse fixing rod and the vertical fixing rod and is arranged in the pit body, the fastening anchor rods 13 are sequentially distributed from top to bottom, and gradually lengthen along with the downward length of the inner wall of the foundation pit 1, and through the sequentially arranged fastening anchor rods 13, the supporting force of the inner wall of the foundation pit 1 is increased, and the collapse risk is reduced.
As a possible implementation manner of this scheme, preferably, the drainage device 4 includes the water collection tank 41 that sets up in sump 3, the sealed lid 42 that is provided with handle 43 in water collection tank 41 topside, be provided with filtration pore 44 on the lateral wall that sump 41 corresponds both sides escape canal 2, be provided with sand removal device 7 through mount 6 on the sealed lid 42, water pumping unit 5 is located inside sump 41, and ponding in escape canal 2 gets into sump 41 through sump 3 under the effect of filtration pore 44, avoids ponding to get into the in-process of sump 41 and carries silt, causes the drainage jam, can take out drainage device 4 through handle 43 simultaneously and clear up.
As a possible implementation manner of this scheme, preferably, the below that the water tank 41 inner wall corresponds filtration pore 44 is provided with water guide plate 8, water guide plate 8 one side is connected with filter screen 9, makes water get into water tank 41 bottom through filter screen 9, gets into the bottom of water tank 41 after the filtration pore 44 filters once more through filter screen 9 under the effect of water guide plate 8, guarantees to filter the silt in the ponding, avoids influencing drainage effect and drainage efficiency.
As a possible implementation manner of this scheme, preferably, the sand removing device 7 includes the pivot 72 that rotates with the support leg at mount 6 both ends and is connected, pivot 72 one end is connected with motor 74, two sets of rotate between the pivot 72 and be connected with guide 71, two sets of be provided with between the pivot 72 outer wall along guide 71 outer wall sliding connection's sand removal board 73, guide 71 top side is provided with into sand mouth 75, guide 71 outer wall is provided with a plurality of groups of sand filtering hole 76, starts motor 74, makes pivot 72 drive sand removal board 73 rotate, collects silt in ponding and silt on the water tank 41 outer wall in guide 71, realizes the sand removal effect, has further guaranteed the efficiency of drainage, avoids silt to cause the jam.
As a possible implementation manner of this scheme, preferably, the sand removing area two sides of the sand removing plate 73 are provided with guide plates 731, the guide plates 731 are connected with two ends of the sand inlet 75, so as to ensure that the sediment on the sand removing plate 73 enters the guide cylinder 71 from the sand inlet 75 through the guide plates 731, and the sediment in the accumulated water is removed, so that the sand removing efficiency is improved.
As a possible implementation manner of the solution, preferably, the water pumping component 5 includes a water pump 54 disposed inside the water collection tank 41, one end of the water pump 54 is connected with a water pumping pipe 51, a water collection pipe 52 is connected between the water pumping pipes 51 in the two sets of water collection tanks 41, a water drainage pipe 53 is connected to the water collection pipe 52, the water pump 54 is started, the accumulated water passes through the water pumping pipe 51 and is concentrated in the water collection pipe 52, and finally is discharged from the water drainage pipe 53, so that the accumulated water of the foundation pit 1 is discharged, and the influence of the accumulated water on later construction is avoided.
A construction method of a near-water foundation pit drainage seepage-proofing structure comprises the following steps:
step 1: according to the construction scheme requirement, marking the position of the foundation pit 1 to be excavated, and excavating, wherein the inner wall of the excavated foundation pit 1 is inclined towards the bottom direction of the foundation pit 1;
step 2: four mutually communicated drainage ditches 2 are excavated downwards around the bottom of the foundation pit 1, and the water collection pit 3 is formed by continuing to excavate downwards at the intersection of the drainage ditches 2;
step 3: installing waterproof baffles 11 along the periphery and the bottom of the inner wall of a foundation pit 1, fixing a protective frame 12 formed by mutually staggered transverse fixing rods and vertical fixing rods on the waterproof baffles 11 through fastening anchor rods 13 on the waterproof baffles 11, and coating waterproof sealing layers 15 in rectangular intervals formed by staggered transverse fixing rods and vertical fixing rods, so that the waterproof baffles 11 are fixed, and the anti-seepage effect is further enhanced;
step 4: the sand removing device 7 is fixed on the sealing cover 42 through the fixing frame 6, the water collecting tank 41 with the sealing cover 42 is placed in the water collecting pit 3, the water suction pump 54 is placed at the bottom of the water collecting tank 41, the water suction pump 54 is placed at a position lower than the depth of the drainage ditch 2, after the water suction pipe 51, the water collecting pipe 52 and the drainage pipe 53 are connected in sequence, the water inlet end of the water suction pipe 51 is connected with the water suction pump 54, and the drainage pipe 53 is fixed on the protection frame 12 through a fixing piece;
step 5: the water in the drainage ditch 2 enters the water collection pit 3, then enters the water collection tank 41 through the filtering holes 44, and enters the bottom of the water collection tank 41 through the filtering net 9 under the action of the water guide plate 8, and the water pump 54 is started to pump out the water and drain the water from the drainage pipe 53.
Through the above-mentioned technical scheme, realized when foundation ditch 1 takes place ponding, can in time discharge ponding in the foundation ditch 1, utilize the effect of waterproof baffle 11 can avoid foundation ditch 1 to take place the problem of infiltration before the drainage, the cooperation protection frame 12 and the use of fastening stock 13 have strengthened the supporting role of foundation ditch 1 inner wall, reduce the risk that takes place to collapse, guarantee to accomplish the drainage to ponding, utilize sand removal device 7 to clear away ponding and silt on the header tank 41 outer wall, avoid ponding to carry silt to cause the jam to drain pipe 53 from drain pipe 53 discharge in-process, thereby influence the efficiency and the drainage effect of drainage.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The invention is not to be limited by the specific embodiments disclosed herein, and other embodiments are within the scope of the invention as defined by the claims of the present application.
Claims (7)
1. The utility model provides a nearly water source foundation ditch drainage seepage prevention structure which characterized in that: the foundation pit comprises a foundation pit (1), waterproof baffles (11) are arranged around the foundation pit (1) together with the bottom, a protection frame (12) is further arranged on the waterproof baffles (11) around the foundation pit (1), fastening anchor rods (13) are arranged on the protection frame (12), the fastening anchor rods (13) penetrate through the waterproof baffles (11), and a plurality of groups of anchor strips (14) are arranged on the outer wall of the fastening anchor rods at equal intervals;
drainage ditches (2) which are communicated with each other are arranged around the bottom of the foundation pit (1), a water collecting pit (3) is arranged at the intersection of the drainage ditches (2), a drainage device (4) is arranged in the water collecting pit (3), and a water pumping component (5) is arranged in the drainage device (4);
the water draining device (4) comprises a water collecting tank (41) arranged in the water collecting pit (3), a sealing cover (42) with a handle (43) is arranged on the top side of the water collecting tank (41) in a sealing mode, filtering holes (44) are formed in the side walls of the water collecting tank (41) corresponding to the water draining ditches (2) on the two sides, a sand removing device (7) is arranged on the sealing cover (42) through a fixing frame (6), and the water pumping component (5) is located inside the water collecting tank (41);
the sand removing device (7) comprises a rotating shaft (72) which is rotationally connected with support legs at two ends of a fixing frame (6), one end of the rotating shaft (72) is connected with a motor (74), two groups of rotating shafts (72) are rotationally connected with guide cylinders (71), two groups of sand removing plates (73) which are slidably connected along the outer walls of the guide cylinders (71) are arranged between the outer walls of the rotating shafts (72), sand inlet openings (75) are formed in the top sides of the guide cylinders (71), and a plurality of groups of sand filtering holes (76) are formed in the outer walls of the guide cylinders (71).
2. The near water foundation pit drainage and seepage prevention structure according to claim 1, wherein:
the protection frame (12) comprises a plurality of groups of transverse fixing rods and vertical fixing rods which are staggered, and a waterproof sealing layer (15) is arranged between rectangular sections formed by the transverse fixing rods and the vertical fixing rods in a staggered mode and is coated on the waterproof baffle plate (11).
3. The near water foundation pit drainage and seepage prevention structure according to claim 2, wherein:
the spike end of the fastening anchor rod (13) penetrates through the intersection of the transverse fixing rod and the vertical fixing rod and is arranged in the pit body, the fastening anchor rods (13) are distributed from top to bottom in sequence, and the length of the fastening anchor rod is gradually lengthened along with the downward length of the inner wall of the foundation pit (1).
4. The near water foundation pit drainage and seepage prevention structure according to claim 1, wherein:
the water collecting tank is characterized in that a water guide plate (8) is arranged below the inner wall of the water collecting tank (41) corresponding to the filtering holes (44), and a filter screen (9) is connected to one side of the water guide plate (8) so that water enters the bottom of the water collecting tank (41) through the filter screen (9).
5. The near water foundation pit drainage and seepage prevention structure according to claim 1, wherein:
the sand removal area of sand removal board (73) both sides are provided with stock guide (731), stock guide (731) are connected with sand inlet (75) both ends.
6. The near water foundation pit drainage and seepage prevention structure according to claim 1, wherein:
the water pumping component (5) comprises a water pumping pump (54) arranged inside the water collecting tank (41), one end of the water pumping pump (54) is connected with a water pumping pipe (51), a water collecting pipe (52) is connected between the water pumping pipes (51) in the two groups of water collecting tanks (41), and a water draining pipe (53) is connected to the water collecting pipe (52).
7. A construction method of a near water foundation pit drainage impervious structure, which is characterized in that the construction method is used for the near water foundation pit drainage impervious structure as claimed in any one of the claims 1-6, and comprises the following steps:
step 1: according to the construction scheme requirement, after marking the position of the foundation pit (1) to be excavated, excavating, wherein the inner wall of the excavated foundation pit (1) is inclined towards the bottom direction of the foundation pit (1);
step 2: four mutually communicated drainage ditches (2) are excavated downwards around the bottom of the foundation pit (1), and water collection pits (3) are formed by continuing to excavate downwards at the intersections of the drainage ditches (2);
step 3: installing waterproof baffles (11) along the periphery and the bottom of the inner wall of a foundation pit (1), fixing a protective frame (12) formed by mutually staggered transverse fixing rods and vertical fixing rods on the waterproof baffles (11) through fastening anchor rods (13), and coating waterproof sealing layers (15) in rectangular intervals formed by the staggered transverse fixing rods and vertical fixing rods, so that the waterproof baffles (11) are fixed, and the anti-seepage effect is further enhanced;
step 4: the sand removing device (7) is fixed on a sealing cover (42) through a fixing frame (6), a water collecting tank (41) with the sealing cover (42) is placed in a water collecting pit (3), a water suction pump (54) is placed at the bottom of the water collecting tank (41), the placement position of the water suction pump (54) is lower than the depth of a drainage ditch (2), after a water suction pipe (51), a water collecting pipe (52) and a drainage pipe (53) are sequentially connected, the water inlet end of the water suction pipe (51) is connected with the water suction pump (54), and the drainage pipe (53) is fixed on a protection frame (12) through a fixing piece;
step 5: the water in the drainage ditch (2) enters the water collecting pit (3) and then enters the water collecting tank (41) through the filtering holes (44), and enters the bottom of the water collecting tank (41) through the filtering net (9) under the action of the water guide plate (8), and the water pump (54) is started to pump out the water and discharge the water from the water discharge pipe (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210741891.0A CN114960714B (en) | 2022-06-28 | 2022-06-28 | Near-water foundation pit drainage seepage-proofing structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210741891.0A CN114960714B (en) | 2022-06-28 | 2022-06-28 | Near-water foundation pit drainage seepage-proofing structure and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114960714A CN114960714A (en) | 2022-08-30 |
| CN114960714B true CN114960714B (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210741891.0A Active CN114960714B (en) | 2022-06-28 | 2022-06-28 | Near-water foundation pit drainage seepage-proofing structure and construction method |
Country Status (1)
| Country | Link |
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