CN110670613A - Anti-seepage structure of foundation pit elevator shaft and construction method thereof - Google Patents
Anti-seepage structure of foundation pit elevator shaft and construction method thereof Download PDFInfo
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- CN110670613A CN110670613A CN201910778427.7A CN201910778427A CN110670613A CN 110670613 A CN110670613 A CN 110670613A CN 201910778427 A CN201910778427 A CN 201910778427A CN 110670613 A CN110670613 A CN 110670613A
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- 238000010276 construction Methods 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 195
- 239000010410 layer Substances 0.000 claims abstract description 67
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 230000002265 prevention Effects 0.000 claims abstract description 14
- 239000011083 cement mortar Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 239000004575 stone Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 29
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 29
- 239000011229 interlayer Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000001556 precipitation Methods 0.000 description 8
- 238000005204 segregation Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004078 waterproofing 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
- 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
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention relates to a water seepage prevention structure of a foundation pit elevator shaft, which comprises a foundation pit, wherein a pit body is arranged in the foundation pit, a water collecting pit is arranged in the pit body, a horizontal groove is formed in the pit body at a water seepage stratum, a floral tube is embedded in the horizontal groove, the horizontal groove extends downwards to form a vertical groove communicated with the water collecting pit, one end of the vertical groove is connected with the floral tube, the other end of the vertical groove is communicated with a water delivery tube of the water collecting pit, and cement mortar for sealing the water seepage stratum is filled in the horizontal groove; a water pump is arranged in the water collecting pit and connected with a drain pipe embedded in the inner wall of the pit body, and the drain pipe extends into a drain ditch of the foundation pit; water permeable filler is arranged in the water collecting pit, a concrete cushion layer is arranged at the bottom of the pit body, waterproof layers are arranged on the bottom and the peripheral wall of the pit body, and protective layers are arranged on the waterproof layers. Through bury floral tube and drain pipe at the internal secretly of hole, can not influence the construction of concrete cushion and waterproof layer when the drainage infiltration, have the advantage of practicing thrift construction cycle, improving the construction quality of concrete cushion and waterproof layer.
Description
Technical Field
The invention relates to the technical field of elevator shaft seepage prevention, in particular to a foundation pit elevator shaft seepage prevention structure and a construction method thereof.
Background
During building foundation construction, because the stagnant water often appears too much in the counter-water of groundwater in the elevator shaft, cause the elevartor shaft can't carry out the construction that concrete cushion and waterproofing membrane laid the process, consequently need take measures, highly reduce the groundwater ponding in the elevartor shaft foundation ditch below the construction height.
The traditional elevator shaft construction process generally adopts the steps of integrally lowering the water level of a basement to be below the bottommost part of an elevator shaft and then carrying out the next construction, but the method has the advantages of long period, low efficiency, high construction period and high precipitation cost in the whole precipitation process, and is difficult to meet the strict requirements of fast pace and construction period on site.
The existing application No. CN201710093450.3 for reference comprises the following steps:
a, arranging a water-lowering pit at the bottom of a pit body, and arranging a water pump in the water-lowering pit;
b, arranging a cover plate above the precipitation pit, prefabricating a sleeve or a reserved hole in the center of the cover plate, and enabling the water pump cable and the water drainage pipe to penetrate out of the sleeve or the hole; a waterproof layer at the bottom of the pit body is laid to the periphery of the sleeve or the hole to be closed;
c, before the underground building pit body is poured, cutting off a drain pipe and a cable of the water suction pump;
d, filling graded sandstone into the precipitation pit from the central sleeve or the hole of the cover plate;
e, pouring concrete into the dewatering pit from the cover plate central sleeve or the hole to the bottom plane of the pit body, and then sealing the cover plate central sleeve or the hole by using quick-setting cement to be level with the upper surface of the cover plate;
f, laying a waterproof layer at the central sleeve or the hole of the cover plate and lapping the waterproof layer at the bottom of the pit body;
and g, pouring pit body structure concrete.
The above prior art solutions have the following drawbacks: when the stratum of the pit body is provided with interlayers which are easy to seep water, such as a silt layer and the like, underground water continuously seeps water into the pit body from the inner wall of the pit body along the silt layer, and a water pump positioned in the dewatering pit can not timely discharge the water seeped from the silt layer, so that a concrete cushion layer and a waterproof layer in the pit body can not be constructed.
Disclosure of Invention
The invention aims to provide a seepage-proofing structure of a foundation pit elevator shaft, which can timely discharge seepage water in a pit body, and has the advantages of saving construction period and improving the construction quality of a concrete cushion layer and a waterproof layer.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a foundation ditch elevartor shaft prevention of seepage water structure, includes the foundation ditch, the position that the foundation ditch set up the elevartor shaft is provided with the hole body, the internal excavation of hole has the sump pit, its characterized in that: the pit body is provided with a horizontal groove along the circumferential direction of the pit body at the water seepage stratum, a floral tube is embedded in the horizontal groove, the horizontal groove extends downwards to form a vertical groove communicated with the water collecting pit, a water delivery pipe with one end connected with the floral tube and the other end communicated with the water collecting pit is arranged in the vertical groove, and cement mortar for sealing the water seepage stratum is filled in the horizontal groove and the vertical groove; a water pump is arranged in the water collecting pit and connected with a drain pipe embedded in the inner wall of the pit body, and the drain pipe extends into a drain ditch of the foundation pit;
the water-permeable pit is characterized in that water-permeable fillers are arranged in the water collecting pit, a concrete cushion layer is arranged at the bottom of the pit body, waterproof layers are arranged on the bottom and the peripheral wall of the pit body, and protective layers are arranged on the waterproof layers.
By adopting the technical scheme, the floral tube is buried in the interlayer with the possibility of water seepage in a concealed mode, the horizontal groove and the vertical groove are sealed by cement mortar, so that the water seepage in the interlayer is discharged into the water collecting pit through the floral tube and the water delivery pipe, then the water is discharged into the foundation pit drainage ditch through the water pump in the water collecting pit, the water seepage in the pit body can be timely discharged through the concealed floral tube and the water drainage pipe, the subsequent construction of the concrete cushion layer and the waterproof layer is prevented from being influenced, in the subsequent construction process of the concrete cushion layer and the waterproof layer, the water seepage can be continuously pumped out of the pit body and drained into the foundation pit drainage ditch, and the quality problems that the water seepage in the water seepage interlayer reaches the bottom of the pit body, the concrete cushion layer cannot be constructed, or the concrete cushion layer is poured and the water seepage are mixed to cause segregation and the; in addition, the water-permeable filler is filled in the water collecting pit, and the water collecting pit and the bottom surface of the pit body are filled and leveled, so that the construction of a concrete cushion layer and a waterproof layer is carried out while the pit body is subjected to precipitation, the working efficiency is high, and the construction period is saved; meanwhile, the side wall of the pit body can be prevented from seeping outwards, the waterproof layer is not stably paved under the action of seepage water pressure, and the construction method has the advantages of saving the construction period and improving the construction quality of the concrete cushion layer and the waterproof layer.
The invention is further configured to: and a cover plate is arranged on the water collecting pit.
Through adopting above-mentioned technical scheme, can strengthen the bearing capacity of sump pit department, the later stage concrete cushion of being convenient for pour, simultaneously, the apron can prevent that the thick liquid in the concrete cushion from flowing to the sump pit, when the initial set, blocks up the water pump.
The invention is further configured to: the water-permeable filler is pebbles or broken stones.
Through adopting above-mentioned technical scheme, the water permeability is good, and after filling, bears the weight of the dynamic height, is convenient for going on of later stage construction.
The invention is further configured to: the grain diameter of the water-permeable filling material is 10-30 mm.
The invention is further configured to: the vertical groove extends upwards to the top of the pit body, and the drain pipe is communicated with the foundation pit drainage ditch through the vertical groove.
By adopting the technical scheme, the construction and the sealing are convenient, the construction time is saved, and the construction efficiency is improved.
The invention is further configured to: two water pumps are arranged in the water collecting pit and are respectively connected with a drain pipe.
Through adopting above-mentioned technical scheme, two water pumps, a drainage, a reserve prevents at the in-process of precipitation that the water pump breaks down, influences the drainage function.
The invention is further configured to: the floral tube is a hose.
Through adopting above-mentioned technical scheme, be convenient for with the floral tube crooked, place in horizontal groove.
The invention is further configured to: the protective layer is formed by pouring fine stone concrete.
By adopting the technical scheme, the protection capability of the waterproof layer is improved.
The invention is further configured to: the water collecting pit is internally sleeved with an iron bucket, the side wall of the iron bucket is provided with a plurality of water filtering holes, and the iron bucket is provided with through holes for the water supply and drainage pipe and the water delivery pipe to pass through.
Through adopting above-mentioned technical scheme, the iron bucket sets up in the sump pit, can prevent that the sump pit from taking place to collapse, increases the bearing capacity of sump pit department.
The invention aims to provide a construction method of a seepage-proofing structure of a foundation pit elevator shaft, which comprises the following steps:
s1, after the foundation pit dewatering excavation is finished, paying off the position of the elevator shaft pit body, marking and excavating;
s2, digging a sump pit 1-2m deep from the bottom of the pit body at the bottom of the pit body, and placing a water pump in the sump pit;
s3, arranging horizontal grooves in the easy-to-seep stratum of the pit body along the circumferential direction of the pit body, wherein the height of each horizontal groove is equal to the thickness of the easy-to-seep stratum, arranging vertical grooves communicated with the horizontal grooves on the inner wall of the pit body, and the tops of the vertical grooves are communicated with the top surface of the pit body while the bottoms of the vertical grooves are communicated with a water collecting pit;
s4, arranging a circle of floral tubes along the horizontal groove, and arranging a water delivery pipe with one end communicated with the floral tubes and the other end communicated with the water collecting pit in the vertical groove;
s5, connecting a water drainage pipe to the water pump, extending the water drainage pipe and a water pump cable to the drainage ditch of the foundation pit along the vertical groove, and then filling cement mortar into the horizontal groove and the vertical groove for sealing;
s6, filling broken stones into the water collecting pit, covering the cover plate, and draining the pit body;
s7, finally, sequentially constructing a concrete cushion layer, a waterproof layer and a protective layer, continuously discharging seepage water in the pit body through a water pump during construction, cutting off a drainage pipe and a cable after the protective layer construction is finished, and discarding the water pump in the water collecting pit.
In conclusion, the beneficial technical effects of the invention are as follows:
the flower pipes are buried in the interlayer with the possibility of water seepage in a concealed mode, the horizontal grooves and the vertical grooves are sealed through cement mortar, so that the water seepage in the interlayer is discharged into the water collecting pit through the flower pipes and the water delivery pipes, then the water is discharged into the foundation pit drainage ditch through the water pump in the water collecting pit, the water seepage in the pit body can be timely discharged, the subsequent construction of the concrete cushion layer and the waterproof layer is avoided being influenced, in the subsequent construction process of the concrete cushion layer and the waterproof layer, the water seepage can be continuously pumped out of the pit body and drained into the foundation pit drainage ditch, the water seepage in the water seepage interlayer is prevented from flowing to the bottom of the pit body, the concrete cushion layer cannot be constructed, or the concrete cushion layer is poured and mixed with the water seepage to cause the quality problems of segregation and the; in addition, the water-permeable filler is filled in the water collecting pit, and the water collecting pit and the bottom surface of the pit body are filled and leveled, so that the construction of a concrete cushion layer and a waterproof layer is carried out while the pit body is subjected to precipitation, the working efficiency is high, and the construction period is saved; meanwhile, the side wall of the pit body can be prevented from seeping outwards, the waterproof layer is not stably paved under the action of seepage water pressure, and the construction method has the advantages of saving the construction period and improving the construction quality of the concrete cushion layer and the waterproof layer.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure, 1, a pit body; 2. a sump; 3. a water pump; 4. a horizontal groove; 5. a floral tube; 6. a vertical groove; 7. a water delivery pipe; 8. cement mortar; 9. a drain pipe; 10. water-permeable filler; 11. a concrete cushion; 12. a waterproof layer; 13. a protective layer; 14. a cover plate; 15. an iron barrel; 16. a permeable formation.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, the anti-seepage structure for the foundation pit elevator shaft disclosed by the invention comprises a foundation pit, wherein a pit body 1 is formed by excavating at the position where the elevator shaft is arranged in the foundation pit, a water collecting pit 2 is excavated at the bottom of the pit body 1, a water pump 3 is placed in the water collecting pit 2, and the depth of the water collecting pit 2 is 1-2m and is greater than the height of the water pump 3. A horizontal groove 4 is formed in the position of the sand layer of the pit body 1 along the circumferential direction of the pit body 1, and the width of the horizontal groove 4 is the same as the thickness of the sand layer. A circle of floral tubes 5 are buried in the horizontal groove 4, and the floral tubes 5 are flexible tubes, so that the floral tubes 5 can be conveniently bent and placed in the horizontal groove 4. A vertical groove 6 is formed in the side wall of the pit body 1, one end of the vertical groove 6 is communicated with the horizontal groove 4, and the other end of the vertical groove is communicated with the water collecting pit 2. One end of the vertical groove 6 is connected with the floral tube 5, the other end of the vertical groove is communicated with the water delivery pipe 7 of the water collecting pit 2, and the horizontal groove 4 and the vertical groove 6 are filled with quick-setting cement mortar 8 to seal the horizontal groove 4 and the vertical groove 6. A water pump 3 is placed in the water collecting pit 2, the water pump 3 is connected with a drain pipe 9 embedded in the inner wall of the pit body 1, and the water outlet end of the drain pipe 9 extends out of the pit body 1 and extends into a drain ditch of the foundation pit. The water collecting pit 2 is filled with water permeable filling materials 10, the water permeable filling materials 10 are pebbles or broken stones, the particle size is 10-30mm, the water permeability is good, and after the filling is completed, the bearing capacity is high, and the later construction is facilitated. The concrete cushion layer 11 is arranged at the bottom of the pit body 1, the waterproof layers 12 are arranged on the bottom and the peripheral walls of the pit body 1, the waterproof layers 12 are waterproof coiled materials, the protective layers 13 for protecting the waterproof layers 12 are poured on the waterproof layers 12, and the protective layers 13 are formed by pouring fine stone concrete. After the construction of the protective layer 13 is completed, the cable and the drain pipe 9 of the water pump 3 are cut off, and the water pump 3 is discarded in the sump 2.
The flower pipes 5 are buried in the interlayer with the possibility of water seepage in a concealed mode, the horizontal grooves 4 and the vertical grooves 6 are sealed through cement mortar 8, the seepage water in the interlayer is drained into the water collecting pit 2 through the flower pipes 5 and the water delivery pipes 7, then the water is drained into a foundation pit drainage ditch through the water pump 3 in the water collecting pit 2, the seepage water in the pit body 1 can be drained timely through the concealed flower pipes 5 and the water drainage pipes 9, the influence on the subsequent construction of the concrete cushion layer 11 and the waterproof layer 12 is avoided, the seepage water can be continuously drained out of the pit body 1 and drained into the foundation pit drainage ditch in the subsequent construction process of the concrete cushion layer 11 and the waterproof layer 12, and the quality problems that the concrete cushion layer 11 cannot be constructed due to the fact that the seepage water in the seepage water interlayer flows to the bottom of the pit body 1, or the segregation is caused by the fact that the concrete cushion layer 11 is poured and; moreover, the water-permeable filling material 10 is filled in the water collecting pit 2, and the water collecting pit 2 and the bottom surface of the pit body 1 are filled and leveled, so that the construction of the concrete cushion layer 11 and the waterproof layer 12 is carried out while the pit body 1 is lowered, the working efficiency is high, and the construction period is saved; meanwhile, the side wall of the pit body 1 can be prevented from seeping outwards, and the waterproof layer 12 is not stably paved under the action of seepage water pressure.
Set up on sump pit 2 with 2 upper ends confined apron 14 of sump pit, apron 14 lid is established at 2 tops of sump pit, seals sump pit 2, can strengthen the bearing capacity of 2 departments of sump pit, and the later stage concrete cushion 11 of being convenient for pours, and simultaneously, apron 14 can prevent that the thick liquid in the concrete cushion 11 from flowing to sump pit 2 in, when the initial set, blocks up water pump 3.
Further, vertical recess 6 upwards extends to 1 top of the pit body, and drain pipe 9 communicates through vertical recess 6 and foundation ditch escape canal, with a vertical recess 6 that drain pipe 9 and raceway 7 are general, is convenient for be under construction and seals, practices thrift engineering time, improves the efficiency of construction.
Set up two water pumps 3 in sump pit 2, two water pumps 3 are connected with drain pipe 9 respectively, two water pumps 3, and a drainage, a reserve prevents at the in-process of precipitation, and water pump 3 breaks down, influences the drainage function.
An iron bucket 15 is sleeved in the water collecting pit 2, a plurality of water filtering holes are formed in the side wall of the iron bucket 15, external water seepage is supplied to stretch into the water collecting pit 2, and a through hole for the water supply and drainage pipe 9 and the water delivery pipe 7 to penetrate through is formed in the iron bucket 15. The iron bucket 15 is arranged in the water collecting pit 2, so that the collapse of the water collecting pit 2 can be prevented, and the bearing capacity of the water collecting pit 2 is improved.
Example two:
referring to fig. 1, a construction method of an anti-seepage structure of a foundation pit elevator shaft includes the following steps:
s1, after the foundation pit dewatering excavation is completed, paying off the position of the elevator shaft pit body 1 by using the total station, marking, excavating the pit body 1 by using the excavator according to the mark, and carrying out slope excavation at 45-60 degrees according to the field geological conditions during excavation, so that the stability of the side wall of the pit body 1 is ensured, and collapse is prevented.
And S2, digging the bottom of the pit body 1 to form a water collecting pit 2, wherein the depth of the water collecting pit 2 is larger than the height of the water pump 3, preferably 1-2m, placing the iron bucket 15 in the water collecting pit 2 for plasticity, and placing the water pump 3 in the water collecting pit 2 for draining the seepage water in the pit body 1.
S3, arranging horizontal grooves 4 in the easy-to-seep stratum 16 in the stratum of the pit body 1 along the circumferential direction of the pit body 1, wherein the height of each horizontal groove 4 is equal to the thickness of the easy-to-seep stratum 16, arranging vertical grooves 6 communicated with the horizontal grooves 4 on the inner wall of the pit body 1, communicating the top surface of the pit body 1 with the tops of the vertical grooves 6, and extending and communicating the water collection pit 2 towards the water collection pit 2 from the bottom horizontally.
S4, arranging a circle of floral tubes 5 along the horizontal groove 4, arranging a water delivery pipe 7 with one end communicated with the floral tubes 5 and the other end communicated with the water collecting pit 2 in the vertical groove 6. The floral tube 5 is used to collect water from the permeable formation 16 and then drain into the sump 2 via the water pipe 7.
S5, connecting the water drainage pipe 9 to the water pump 3, extending the water drainage pipe 9 and the water pump 3 cable to the foundation pit drainage ditch along the vertical groove 6, then filling quick setting cement mortar 8 into the horizontal groove 4 and the vertical groove 6 for sealing, and preventing water seepage from the horizontal groove 4 and the vertical groove 6.
S6, filling broken stones into the water collecting pit 2, covering the cover plate 14, connecting a cable, and discharging water seeping from the water collecting pit 2 to a drainage ditch in the foundation pit by the water pump 3.
And S7, constructing the concrete cushion layer 11, the waterproof layer 12 and the protective layer 13 in sequence, continuously discharging seepage water in the pit body 1 through the water pump 3 during construction, cutting off the water drainage pipe 9 and the cable after the construction of the protective layer 13 is finished, and discarding the water pump 3 in the sump 2.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a foundation ditch elevartor shaft prevention of seepage water structure, includes the foundation ditch, the position that the foundation ditch set up the elevartor shaft is provided with the hole body (1), it has sump pit (2), its characterized in that to excavate in the hole body (1): horizontal grooves (4) are formed in the pit body (1) at a water seepage stratum (16) along the circumferential direction of the pit body (1), floral tubes (5) are embedded in the horizontal grooves (4), the horizontal grooves (4) extend downwards to form vertical grooves (6) communicated with the water collecting pit (2), one ends of the vertical grooves (6) are connected with the floral tubes (5), the other ends of the vertical grooves are communicated with a water delivery pipe (7) of the water collecting pit (2), and cement mortar (8) for sealing the water seepage stratum (16) is filled in the horizontal grooves (4) and the vertical grooves (6); a water pump (3) is arranged in the water collecting pit (2), the water pump (3) is connected with a drain pipe (9) embedded in the inner wall of the pit body (1), and the drain pipe (9) extends into a drain ditch of the foundation pit;
the water-permeable pit is characterized in that water-permeable fillers (10) are arranged in the water collecting pit (2), a concrete cushion layer (11) is arranged at the bottom of the pit body (1), waterproof layers (12) are arranged at the bottom and on the peripheral wall of the pit body (1), and a protective layer (13) is arranged on the waterproof layers (12).
2. The foundation pit elevator shaft seepage prevention structure of claim 1, wherein: and a cover plate (14) is arranged on the water collecting pit (2).
3. The foundation pit elevator shaft seepage prevention structure of claim 1, wherein: the water-permeable filling material (10) is pebbles or broken stones.
4. The foundation pit elevator shaft seepage prevention structure of claim 3, wherein: the grain diameter of the water-permeable filling material (10) is 10-30 mm.
5. The foundation pit elevator shaft seepage prevention structure of claim 1, wherein: vertical recess (6) upwards extend to pot body (1) top, drain pipe (9) communicate with the foundation ditch escape canal through vertical recess (6).
6. The foundation pit elevator shaft seepage prevention structure of claim 1, wherein: two water pumps (3) are arranged in the water collecting pit (2), and the two water pumps (3) are respectively connected with a drain pipe (9).
7. The foundation pit elevator shaft seepage prevention structure of claim 1, wherein: the floral tube (5) is a hose.
8. The foundation pit elevator shaft seepage prevention structure of claim 1, wherein: the protective layer (13) is formed by pouring fine stone concrete.
9. The foundation pit elevator shaft seepage prevention structure of claim 1, wherein: the water collecting pit (2) is internally sleeved with an iron bucket (15), the side wall of the iron bucket (15) is provided with a plurality of water filtering holes, and the iron bucket (15) is provided with through holes for the water supply and drainage pipe (9) and the water delivery pipe (7) to pass through.
10. A construction method of a water seepage prevention structure of a foundation pit elevator shaft is characterized by comprising the following steps:
s1, after the foundation pit dewatering excavation is finished, paying off the position of the elevator shaft pit body (1), marking and excavating;
s2, digging a water collecting pit (2) which is 1-2m deeper than the bottom surface of the pit body (1) at the bottom of the pit body (1), and placing a water pump (3) in the water collecting pit (2);
s3, arranging a horizontal groove (4) at a position of a water-permeable stratum (16) in a stratum of a pit body (1) along the circumferential direction of the pit body (1), wherein the height of the horizontal groove (4) is the same as the thickness of the water-permeable stratum (16), arranging a vertical groove (6) communicated with the horizontal groove (4) on the inner wall of the pit body (1), and communicating the top of the vertical groove (6) with the top surface of the pit body (1) and the bottom of the vertical groove (6) with a water collecting pit (2);
s4, arranging a circle of floral tubes (5) along the horizontal groove (4), and arranging a water conveying pipe (7) with one end communicated with the floral tubes (5) and the other end communicated with the water collecting pit (2) in the vertical groove (6);
s5, connecting a drain pipe (9) to a water pump (3), extending a cable of the drain pipe (9) and the water pump (3) to a drainage ditch of the foundation pit along a vertical groove (6), and then filling cement mortar (8) into a horizontal groove (4) and the vertical groove (6) for sealing;
s6, filling gravels into the water collecting pit (2), covering the cover plate (14), and draining the pit body (1);
s7, finally, constructing a concrete cushion layer (11), a waterproof layer (12) and a protective layer (13) in sequence, continuously discharging seepage water in the pit body (1) through a water pump (3) during construction, cutting off a drainage pipe (9) and a cable after the construction of the protective layer (13) is completed, and discarding the water pump (3) in the water collecting pit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910778427.7A CN110670613B (en) | 2019-08-22 | 2019-08-22 | Foundation pit elevator shaft water seepage prevention structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910778427.7A CN110670613B (en) | 2019-08-22 | 2019-08-22 | Foundation pit elevator shaft water seepage prevention structure and construction method thereof |
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| CN110670613A true CN110670613A (en) | 2020-01-10 |
| CN110670613B CN110670613B (en) | 2024-03-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281858A (en) * | 2020-10-20 | 2021-01-29 | 中建八局发展建设有限公司 | Mud rock natural foundation fissure water drainage construction method |
| CN113136884A (en) * | 2021-04-26 | 2021-07-20 | 中国二十二冶集团有限公司 | Construction method of strongly weathered rock foundation pit well rich in low-pressure-bearing fracture water |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU89542U1 (en) * | 2009-07-15 | 2009-12-10 | Открытое акционерное общество "Адмиралтейские верфи" (ОАО "Адмиралтейские верфи") | STRUCTURE FOR LOCALIZATION AND STRENGTHENING WEAK SOIL |
| CN103046565A (en) * | 2011-10-17 | 2013-04-17 | 五冶集团上海有限公司 | Draining method for ultra-deep batholith deep foundation pit |
| CN106894431A (en) * | 2017-02-21 | 2017-06-27 | 潍坊市宏源防水材料有限公司 | Hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment |
| CN206467677U (en) * | 2017-01-22 | 2017-09-05 | 北京爱地地质勘察基础工程公司 | Foundation pit side-wall drainage arrangement |
| CN206784414U (en) * | 2017-05-28 | 2017-12-22 | 青岛东捷建设工程有限公司 | A kind of foundation pit of elevator shaft Yield rainfall relation device |
| CN210946854U (en) * | 2019-08-22 | 2020-07-07 | 北京东地岩土工程有限公司 | Anti-seepage structure of foundation pit elevator shaft |
-
2019
- 2019-08-22 CN CN201910778427.7A patent/CN110670613B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU89542U1 (en) * | 2009-07-15 | 2009-12-10 | Открытое акционерное общество "Адмиралтейские верфи" (ОАО "Адмиралтейские верфи") | STRUCTURE FOR LOCALIZATION AND STRENGTHENING WEAK SOIL |
| CN103046565A (en) * | 2011-10-17 | 2013-04-17 | 五冶集团上海有限公司 | Draining method for ultra-deep batholith deep foundation pit |
| CN206467677U (en) * | 2017-01-22 | 2017-09-05 | 北京爱地地质勘察基础工程公司 | Foundation pit side-wall drainage arrangement |
| CN106894431A (en) * | 2017-02-21 | 2017-06-27 | 潍坊市宏源防水材料有限公司 | Hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment |
| CN206784414U (en) * | 2017-05-28 | 2017-12-22 | 青岛东捷建设工程有限公司 | A kind of foundation pit of elevator shaft Yield rainfall relation device |
| CN210946854U (en) * | 2019-08-22 | 2020-07-07 | 北京东地岩土工程有限公司 | Anti-seepage structure of foundation pit elevator shaft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281858A (en) * | 2020-10-20 | 2021-01-29 | 中建八局发展建设有限公司 | Mud rock natural foundation fissure water drainage construction method |
| CN113136884A (en) * | 2021-04-26 | 2021-07-20 | 中国二十二冶集团有限公司 | Construction method of strongly weathered rock foundation pit well rich in low-pressure-bearing fracture water |
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| CN110670613B (en) | 2024-03-19 |
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