CN116988499B - Site foundation pit drainage device and construction method thereof - Google Patents
Site foundation pit drainage device and construction method thereof Download PDFInfo
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- CN116988499B CN116988499B CN202311246431.1A CN202311246431A CN116988499B CN 116988499 B CN116988499 B CN 116988499B CN 202311246431 A CN202311246431 A CN 202311246431A CN 116988499 B CN116988499 B CN 116988499B
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- 238000010276 construction Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 250
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 28
- 239000002689 soil Substances 0.000 claims description 25
- 238000001914 filtration Methods 0.000 claims description 23
- 238000004891 communication Methods 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 10
- 238000001556 precipitation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 239000012141 concentrate Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 26
- 101150054854 POU1F1 gene Proteins 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer 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
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- 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
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells
- E03F1/003—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells via underground elongated vaulted elements
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Water Supply & Treatment (AREA)
- Public Health (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention belongs to the technical field of building construction, in particular to a field foundation pit drainage device and a construction method thereof, wherein the drainage device comprises the following steps: the deep water collecting wells are arranged around the foundation pit, and the open drain trenches and the electric cabinet are dug and arranged at the periphery of the foundation pit, and the deep water collecting wells are positioned between the foundation pit and the open drain trenches; a water collection protection pipeline is arranged in the water collection deep well, a gravel filter layer is filled at the middle lower side of the inside of the water collection deep well, and a deep well pump is arranged at the lower side of the inside of the water collection protection pipeline; and a circle of water storage groove is dug at the bottom end of the interior of the foundation pit. Through the deep well of catchmenting will need the suction precipitation around the excavation foundation ditch, can carry out the precipitation of foundation ditch lower part before the excavation foundation ditch, dig the in-process of foundation ditch excavation, the inside bottom of foundation ditch and establish round catch basin to it is not very dark to need, through the setting of catch basin, concentrate with the water collection that overflows from the downside to the inside lateral wall of foundation ditch in the water collection that overflows of foundation ditch inside and the water collection that overflows from the downside to the foundation ditch inside, realize the effect to the inside and precipitation around the foundation ditch.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a field foundation pit drainage device and a construction method thereof.
Background
The foundation pit is a soil pit excavated at a foundation design position according to the elevation of the substrate and the plane size of the foundation. Before excavation, the excavation scheme is determined according to geological hydrologic data and the conditions of buildings nearby the site, and waterproof and drainage works are performed. The method of releasing the slope can be used by the person with non-deep excavation to stabilize the soil slope, and the gradient of the soil slope is determined according to relevant construction regulations. The foundation pit dewatering is that when the foundation pit is excavated, the groundwater level is higher than the bottom surface of the excavation, and the groundwater can continuously infiltrate into the pit, so that the foundation pit can be constructed under the dry condition, and the dewatering work of side slope instability, foundation sand, pit bottom bulge, pit bottom piping and foundation bearing capacity reduction is prevented.
The foundation pit dewatering method mainly comprises the following steps: water collecting well dewatering in open trench, light well-point dewatering, jet well-point dewatering, electroosmosis well-point dewatering, deep well-point dewatering, etc.
At present, a plurality of modes for draining a foundation pit are commonly used, and are specifically as follows:
for example, chinese patent application No. CN201511003373.5 discloses a deep-shallow well foundation pit dewatering system for a large foundation pit composite stratum and a dewatering method thereof, the system includes at least one deep vacuum pipe well unit and a plurality of shallow dewatering pipe well units, and the arrangement density of each deep vacuum pipe well unit is less than that of each shallow dewatering pipe well unit; and carrying out long-term drainage on the deep soil layer of the foundation pit by using the deep vacuum pipe well unit, and carrying out quick drainage on the shallow soil layer of the foundation pit by using the shallow water fall pipe well unit and the deep vacuum pipe well unit. When in actual use, the deep soil layer of foundation ditch is dried for a long time by adopting an independent deep vacuum pipe well unit, and because the inner wall area of the foundation ditch is larger after the foundation ditch is excavated, the water in the soil overflows from the inner wall of the foundation ditch, and the water is accumulated inside the foundation ditch, and because the foundation ditch is excavated, the inner wall of the foundation ditch is usually more tight, so that the water in the foundation ditch seeps downwards slowly, and the condition of water drainage interruption appears.
For example, chinese patent application No. CN202210353719.8 relates to a foundation pit dewatering structure and a dewatering method, which belongs to the technical field of foundation pit dewatering, and comprises a foundation pit, an open trench is formed in the ground of the foundation pit, a water collecting well is formed in the bottom end of the open trench, a filter box is arranged in the foundation pit, a water inlet pipe and a water outlet pipe are arranged in the filter box, the other end of the water inlet pipe extends deep into the water collecting well, the other end of the water outlet pipe is used for connecting a water pumping piece, a filter screen is arranged in the filter box and between the water inlet pipe and the water outlet pipe, and a cleaning component is arranged in the filter screen and used for cleaning the filter screen. When the method is implemented, the water accumulated on the inner surface of the foundation pit can be discharged only by adopting the open trench drainage mode, the open trench needs to be dug deeply, accumulated water in soil on two sides is supplemented and concentrated to the lower side of the foundation pit, the condition that the water content in the foundation pit is difficult to keep in a water accumulation state below the soil of the foundation pit is difficult to keep.
For example, chinese patent application No. CN201810290488.4 discloses a shallow horizontal foundation pit dewatering method for use with pipe well dewatering and well point dewatering, comprising the steps of: when a soft clay layer with low permeability coefficient exists under the basic bearing platform or a sand-stone interlayer with high permeability coefficient exists on the side wall of the foundation pit, an annular horizontal groove is excavated at the periphery of the bottom of the foundation pit; a plastic hose horizontally arranged in the annular horizontal groove, a round hole is drilled on the outer side surface of the plastic hose along the length direction of the hose, a nylon Long Xi grid cloth filter screen is adopted to wrap the outer side of the drilled part, and the other end of the hose is connected with a vacuum pump or connected with the vacuum pump through a drainage main pipe; and backfilling the pit bottom groove by adopting an original foundation pit soil soft clay layer or a sand interlayer, and starting a vacuum pump to perform foundation pit dewatering construction. The mode combines open trench drainage and collector well dewatering, but in actual use, the plastic hose actually sucks the interior of the foundation pit or the lower surface layer of the foundation pit, so that the moisture in the soil layer at the lower side of the foundation pit is still larger.
Disclosure of Invention
The invention aims to provide a site foundation pit drainage device and a construction method thereof, which are used for solving the problems that the drainage is not timely enough and the overall efficiency is not high and the construction is affected due to the way of single open ditch drainage, single water collecting well drainage or a combination thereof which are proposed in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a field foundation pit drainage device comprising:
the deep water collecting wells are arranged around the foundation pit, and the open drain trenches and the electric cabinet are dug and arranged at the periphery of the foundation pit, and the deep water collecting wells are positioned between the foundation pit and the open drain trenches;
the water collection deep well is internally provided with a water collection protection pipeline, the middle lower side of the inside of the water collection deep well is filled with a gravel filtering layer, the upper side of the gravel filtering layer is filled with a soil layer, the soil layer extends to the upper end of the water collection deep well, the bottom end of the outer wall of the water collection protection pipeline is provided with a water filtering hole, the lower side of the inside of the water collection protection pipeline is provided with a deep well pump, the deep well pump is electrically connected with an electric cabinet, the upper part of the deep well pump is a water outlet, the upper side of the water outlet is connected with an output pipeline, the upper side of the water collection deep well is provided with a concentration pipeline, the concentration pipeline is communicated with the top ends of the output pipelines, and one side of the concentration pipeline is connected with an output main pipe, and one end of the output main pipe, which is far away from the concentration pipeline, extends into a water drainage open ditch;
the foundation pit is characterized in that a circle of water storage groove is dug at the bottom end of the interior of the foundation pit, the water storage groove is communicated with at least one water collection deep well through a communication channel, the communication channel is inclined, and one end, connected with the water storage groove, of the communication channel is higher than the other end.
Preferably, the water collection protection pipeline comprises a plurality of unit pipelines which are connected end to end in sequence, the unit pipelines are connected through threads, the water filtering holes are formed in the side wall of the unit pipeline at the lowest side, and the bottom end of the unit pipeline at the lowest side is closed.
Preferably, the outer wall upside of deep-well pump is provided with spacing bulge loop, the inner wall downside of catchment protection pipeline is provided with the holding ring, spacing bulge loop is run through to the downside of deep-well pump, spacing bulge loop supports on the holding ring, the inside downside of catchment protection pipeline is provided with interior filter screen, interior filter screen covers all drainage holes.
Preferably, the bottom end of the water collecting protection pipeline is lower than the bottom end of the foundation pit by 2m-3m, the diameter of the inner wall of the water collecting deep well is 1.5-2 times that of the outer wall of the water collecting protection pipeline, the minimum distance between the water collecting deep well and the foundation pit is 1.5m, a cushion layer made of a leakage-proof plastic material or a rubber material is paved on the inner wall of the open drainage ditch, and the distance between the adjacent water collecting deep wells is 10m-30m.
Preferably, the inner wall of the water collection protection pipeline is provided with a sliding rail, the sliding rail is parallel to the axis of the water collection protection pipeline, the outer wall of the limit convex ring is provided with a sliding groove matched with the sliding rail, and the sliding groove is slidably connected to the sliding rail.
Preferably, a clamping groove is formed in the side wall of the water outlet, an elastic clamping block matched with the clamping groove is arranged on the lower side of the outer wall of the output pipeline, and the elastic clamping block corresponds to the clamping groove in position.
Preferably, the elastic clamping block comprises an elastic telescopic mechanism arranged on the outer wall of the output pipeline and a clamping block arranged at the telescopic end of the elastic telescopic mechanism, the clamping block is matched with the clamping groove, and the elastic telescopic mechanism is embedded in the outer wall of the output pipeline.
Preferably, the bottom end of the output pipeline is in a closed shape with a large upper part and a small lower part, and the inner wall of the water outlet is in a conical shape attached to the bottom end of the output pipeline.
Preferably, the water outlet pipe comprises a water outlet pipe body, and is characterized by further comprising a salvaging mechanism, wherein the salvaging mechanism comprises a hollow movable ring, a hanging ring arranged on the upper surface of the movable ring and a clamping mechanism arranged on the movable ring, the clamping mechanism is connected with the water outlet in a matched manner, and the diameter of the inner wall of the movable ring is larger than that of the outer wall of the output pipe.
Preferably, the outer wall of the movable ring is provided with a sliding bayonet, the diameter of the outer wall of the movable ring is not larger than the diameter of the inner wall of the output pipeline, and the sliding bayonet corresponds to the position of the sliding rail and is adaptive to the position of the sliding rail.
Preferably, the clamping mechanism comprises a clamping arm which is rotationally connected to the inner wall of the movable ring, a supporting spring is connected between the outer wall of the clamping arm and the inner wall of the movable ring, a clamping block is arranged at the bottom end of the clamping arm, and the clamping block corresponds to the clamping groove in position and is adaptive to the clamping groove in position.
Preferably, the bottom end of the outer wall of the output pipeline is sleeved with a sealing rubber ring.
The field foundation pit drainage construction method is based on the field foundation pit drainage device for drainage construction and comprises the following specific steps:
s1: digging water-collecting deep wells on the periphery of the foundation pit before the foundation pit is opened, digging the water-collecting deep wells in rows, and positioning the water-collecting deep wells on at least one side of the periphery of the foundation pit;
s2: a water collecting protection pipeline is put into a water collecting deep well until the bottom end of the water collecting protection pipeline reaches the bottom of the inner cavity of the water collecting deep well, the upper part of the water collecting protection pipeline is 20cm-30cm higher than the water collecting deep well, a sand filtering layer is filled in a gap between the water collecting deep well and the water collecting protection pipeline, a soil layer is filled and compacted on the upper side of the inner part of the water collecting deep well, a deep well pump is connected with an output pipeline, and then a deep well pump connecting rope is put into the water collecting protection pipeline;
s3: the electric cabinet controls the deep well pump to pump water sucking disease and discharge the water through the open drain, a foundation pit is dug after water pumping is started for 2-3 days, a water storage groove is dug at the inner edge of the foundation pit, water is gathered in the water storage groove, and gathered water is discharged into the water gathering deep well through the communication channel.
Preferably, the deep well pump is periodically started and stopped in the foundation pit digging process, so that the water level at the lower part of the foundation pit is lower than 1m at the bottom of the foundation pit.
Compared with the prior art, the invention has at least the following beneficial effects:
1) The method comprises the steps of combining open trench drainage with water collection deep well drainage, setting a water collection deep well before excavation of a foundation pit, pumping water around the foundation pit to be excavated through the water collection deep well, and carrying out precipitation on the lower part of the foundation pit before excavation of the foundation pit;
2) Through the arrangement of the communication channel, the water storage groove and the water collection deep well are communicated, so that the accumulated water in the water storage groove can enter the water collection deep well from the communication channel, the accumulated water in the water collection deep well is pumped out through the deep well pump, the accumulated water in the foundation pit and the accumulated water at the lower side can be pumped out, and the use of the water pump is reduced;
3) The sand filter layer and the soil layer are filled in the water collecting protection pipeline, the sand filter layer surrounds the outer part of the water collecting protection pipeline, the filtering effect is achieved, external soil and the like are prevented from entering the water collecting protection pipeline through the water filtering holes, and the water filtering holes and the sand filter layer are combined for use, so that a good filtering effect on the soil is achieved;
4) Through the setting of slide rail for the installation of deep-well pump in the protection pipeline that catchments is comparatively steady, in the use, the cooperation of slide rail and spout makes the deep-well pump be difficult for relative the protection pipeline that catchments rotatory, when the rope on the deep-well pump carelessly drops and gets into in the protection pipeline that catchments, after the drainage is accomplished, can take out the deep-well pump together with the protection pipeline that catchments, perhaps survey down through salvage mechanism, take out the deep-well pump in the protection pipeline that catchments can.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the water collection protection pipe, the output pipe, the concentration pipe and the output header pipe of the present invention;
FIG. 3 is a schematic view of the structure of the water collection protection pipe, the water filtering hole and the output pipe of the invention;
FIG. 4 is a schematic diagram of the deep well pump, water outlet, limit collar, chute and slide rail according to the present invention;
FIG. 5 is a schematic view of the structure of the limit collar, chute, slide rail, clamping groove and moving collar of the present invention;
FIG. 6 is a schematic view of the structure of the deep well pump, water outlet and limit collar of the present invention;
FIG. 7 is a schematic diagram of the separation structure of the deep well pump and the output pipeline of the present invention;
FIG. 8 is a schematic diagram of a fishing mechanism according to the present invention.
In the figure: 1. a foundation pit; 2. a water collecting deep well; 3. a water collection protection pipeline; 4. a water filtering hole; 5. an output pipe; 6. a centralized pipeline; 7. a soil layer; 8. an output manifold; 9. a drain open ditch; 10. an electric control box; 11. an inner filter screen; 12. a support ring; 13. a deep well pump; 14. a water outlet; 15. a limit convex ring; 16. a chute; 17. a slide rail; 18. a clamping groove; 19. an elastic clamping block; 20. a movable ring; 21. a clamping arm; 22. a support spring; 23. clamping the clamping block; 24. a hanging ring; 25. sliding bayonet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Embodiment one:
referring to fig. 1-8, the present invention provides a technical solution: a field foundation pit drainage device comprising:
the deep water collecting wells 2 are arranged around the foundation pit 1, the open drain trenches 9 are dug at the periphery of the foundation pit 1, and the electric cabinet 10 is arranged in the deep water collecting wells 2, and are positioned between the foundation pit 1 and the open drain trenches 9;
the water collection deep well 2 is internally provided with a water collection protection pipeline 3, the middle lower side of the inside of the water collection deep well 2 is filled with a gravel filtering layer, the upper side of the gravel filtering layer is filled with a soil layer 7, the soil layer 7 extends to the upper end of the water collection deep well 2, the bottom end of the outer wall of the water collection protection pipeline 3 is provided with a water filtering hole 4, the lower side of the inside of the water collection protection pipeline 3 is provided with a deep well pump 13, the deep well pump 13 is electrically connected with an electric cabinet 10, the upper part of the deep well pump 13 is provided with a water outlet 14, the upper side of the water outlet 14 is connected with an output pipeline 5, the upper side of the water collection deep well 2 is provided with a concentration pipeline 6, the concentration pipeline 6 is communicated with the top ends of the output pipelines 5, one side of the concentration pipeline 6 is connected with an output main pipe 8, and one end of the output main pipe 8 far away from the concentration pipeline 6 extends into a drain open ditch 9;
the inside bottom of foundation ditch 1 digs establishes the round catch basin, the catch basin passes through the intercommunication passageway with at least one water collection deep well 2 therein, the intercommunication passageway sets up to the slope form, and the one end that the intercommunication passageway is connected with the catch basin is higher than the other end. The bottom of the water collection protection pipeline 3 is lower than the bottom 2m-3m of the foundation pit 1, the diameter of the inner wall of the water collection deep well 2 is 1.5-2 times that of the outer wall of the water collection protection pipeline 3, the minimum distance between the water collection deep well 2 and the foundation pit 1 is 1.5m, a cushion layer made of a leakage-proof plastic material or a rubber material is laid on the inner wall of the water drainage open trench 9, and the distance between the adjacent water collection deep wells 2 is 10m-30m.
When the device is used, the distance between the water collection deep well 2, the foundation pit 1 and the open drain ditch 9 is set according to the soil property and the digging depth of the foundation pit 1, after digging, the water collection protection pipeline 3 is assembled into the water collection deep well 2, the deep well pump 13 is inserted into the water collection protection pipeline 3, the deep well pump 13 is controlled based on the output of the electric cabinet 10, the deep well pump 13 sucks water through the water collection protection pipeline 3 for drainage, and the sucked water is discharged into the open drain ditch 9 through the concentration pipeline 6 and the output main pipe 8;
along with the excavation of foundation ditch 1, dig the bottom in foundation ditch 1 and establish the round catch basin, the catch basin concentrates the water that the inside slope lateral wall of foundation ditch 1 overflowed and the water that the bottom overflowed, and can lead in the deep well 2 that catchments with the water in the catch basin through the intercommunication passageway, in the deep well 2 that catchments, deep well pump 13 can take out water, from the precipitation of the inner wall and downside deep layer of foundation ditch 1, guarantee that construction normally goes on in the foundation ditch 1.
Referring to fig. 1-2, the present invention provides a technical solution: the water collection protection pipeline 3 comprises a plurality of unit pipelines which are connected end to end in sequence, the unit pipelines are connected through threads, the water filtering holes 4 are formed in the side wall of the unit pipeline at the lowest side, and the bottom end of the unit pipeline at the lowest side is closed. The water collection protection pipeline 3 adopts a mode of combining a plurality of unit pipelines, so that transportation is convenient, and the mode of combining the plurality of unit pipelines is convenient for sectional maintenance, and when the water collection protection pipeline is driven into the ground, the plurality of unit pipelines are sequentially operated, so that the water collection protection pipeline is more convenient.
Embodiment two:
referring to fig. 1-8, the present invention provides a technical solution based on the first embodiment: the outer wall upside of deep-well pump 13 is provided with spacing bead 15, the inner wall downside of water collection protection pipeline 3 is provided with support ring 12, spacing bead 15 is run through to the downside of deep-well pump 13, spacing bead 15 supports on support ring 12, the inside downside of water collection protection pipeline 3 is provided with interior filter screen 11, interior filter screen 11 covers all drainage holes 4.
The water entering from the water filtering holes 4 is further filtered through the inner filter screen 11, substances such as sediment are prevented from entering the water collecting protection pipeline 3, and the deep-well pump 13 cannot fall too much due to the cooperation of the limiting convex ring 15 and the supporting ring 12, so that a space for water to enter is reserved between the bottom end of the deep-well pump 13 and the inner bottom end of the water collecting protection pipeline 3.
Embodiment III:
referring to fig. 1-8, the present invention provides a technical solution based on a second embodiment: the inner wall of the water collection protection pipeline 3 is provided with a sliding rail 17, the sliding rail 17 is parallel to the axis of the water collection protection pipeline 3, the outer wall of the limit convex ring 15 is provided with a sliding groove 16 matched with the sliding rail 17, and the sliding groove 16 is slidably connected to the sliding rail 17. The side wall of the water outlet 14 is provided with a clamping groove 18, the lower side of the outer wall of the output pipeline 5 is provided with an elastic clamping block 19 matched with the clamping groove 18, and the elastic clamping block 19 corresponds to the clamping groove 18 in position. The elastic clamping block 19 comprises an elastic telescopic mechanism arranged on the outer wall of the output pipeline 5 and a clamping block arranged on the telescopic end of the elastic telescopic mechanism, the clamping block is matched with the clamping groove 18, and the elastic telescopic mechanism is embedded in the outer wall of the output pipeline 5.
When the water collecting protection pipeline 3 is used, the sliding groove 16 and the sliding groove 17 are matched, so that the limit convex ring 15 moves stably when ascending or descending in the water collecting protection pipeline 3, and when the water collecting protection pipeline is used, the connection between the deep-well pump 13 and the output pipeline 5 is easy to loosen due to vibration of the deep-well pump 13, and the water collecting protection pipeline is subjected to the matching action of the sliding groove 17 and the sliding groove 16, so that the vibration of the deep-well pump 13 is limited to a certain extent. The elastic expansion and contraction of the elastic clamping blocks 19 can enable the output pipeline 5 and the clamping groove 18 to be elastically connected, and the quick connection and the disassembly are convenient. Under the action of the elastic force of the elastic telescopic mechanism, the clamping block stretches out of the outer wall of the output pipeline 5, when the elastic clamping block 19 is connected with the clamping groove 18, the clamping block is pressed towards the elastic telescopic mechanism, so that the elastic telescopic mechanism contracts until the output pipeline 5 is inserted into the water outlet 14, and under the action of the elastic force of the elastic telescopic mechanism, the clamping block pops out, so that the clamping block is clamped into the clamping groove 18.
Referring to fig. 1-2, the present invention provides a technical solution: the bottom of the output pipeline 5 is set to be in a closing-in shape with a big top and a small bottom, the inner wall of the water outlet 14 is set to be in a conical shape which is attached to the bottom of the output pipeline 5, and a sealing rubber ring is sleeved at the bottom of the outer wall of the output pipeline 5. The output pipe 5 having this shape can be inserted into the water outlet 14 more easily. The sealing rubber ring is arranged, so that the outer wall of the output pipeline 5 is tightly attached to the inner wall of the water outlet 14, and sealing connection is realized.
Embodiment four:
referring to fig. 1-8, the present invention provides a technical solution based on the third embodiment: the water outlet 14 is provided with a water outlet, the water outlet is provided with a water outlet pipe 5, the water outlet is provided with a water outlet pipe 14, the water outlet is provided with a water outlet pipe 5, and the water outlet is provided with a water outlet pipe 5. The outer wall of the movable ring 20 is provided with a sliding bayonet 25, the diameter of the outer wall of the movable ring 20 is not larger than the diameter of the inner wall of the output pipeline 5, and the sliding bayonet 25 corresponds to the position of the sliding rail 17 and is matched with the position of the sliding rail. The clamping mechanism comprises a clamping arm 21 rotatably connected to the inner wall of the movable ring 20, a supporting spring 22 is connected between the outer wall of the clamping arm 21 and the inner wall of the movable ring 20, a clamping block 23 is arranged at the bottom end of the clamping arm 21, and the clamping block 23 corresponds to the clamping groove 18 in position and is adaptive to the clamping groove.
When the deep-well pump 13 is not easy to take out from the water collection protection pipeline 3, a salvaging mechanism can be adopted to take out, a sling is connected to the sling 24 in advance, the sling is used for putting down the sling 24 from top to bottom, the movable ring 20 is sleeved outside the output pipeline 5, the sliding bayonet 25 is clamped on the sliding rail 17 in a sliding manner, the movable ring 20 descends until the lower end of the clamping arm 21 contacts with the water outlet 14, the clamping arm 21 is pushed outwards under the pushing action of the water outlet 14, meanwhile, the supporting spring 22 is compressed and generates elastic force, along with the continuous descent of the movable ring 20, the clamping fixture block 23 is clamped into the clamping groove 18, meanwhile, the elastic fixture block 19 in the clamping groove 18 is pushed out, the upper part of the clamping fixture block can be used for lifting the output pipeline 5 upwards, the salvaging mechanism and the deep-well pump 13 are lifted up through the sling, and then the deep-well pump 13 is overhauled.
The field foundation pit drainage construction method is based on the field foundation pit drainage device for drainage construction and comprises the following specific steps:
s1: digging water collection deep wells 2 on the periphery of the foundation pit 1 before the foundation pit 1 is opened, digging the water collection deep wells 2 in rows, and positioning the water collection deep wells 2 on at least one side of the periphery of the foundation pit 1;
s2: a water collecting protection pipeline 3 is put into the water collecting deep well 2 until the bottom end of the water collecting protection pipeline 3 reaches the bottom of the inner cavity of the water collecting deep well 2, the upper part of the water collecting protection pipeline 3 is 20cm-30cm higher than the water collecting deep well 2, a sand filtering layer is filled in a gap between the water collecting deep well 2 and the water collecting protection pipeline 3, a soil layer 7 is filled in the upper side of the inside of the water collecting deep well 2 and compacted, a deep well pump 13 is connected with an output pipeline 5, and then the deep well pump 13 is connected with a rope and is put into the water collecting protection pipeline 3;
s3: the electric cabinet 10 controls the deep well pump 13 to pump the water absorbing disease and discharge the water absorbing disease through the open drain channel 9, the foundation pit 1 is dug after pumping water for 2-3 days, water storage tanks are dug at the inner edge of the foundation pit 1, water is collected in the water storage tanks, and the collected water is discharged into the water collecting deep well 2 through the communication channels.
And in the process of digging the foundation pit 1, the deep well pump 13 is periodically started and stopped, so that the water level at the lower part of the foundation pit 1 is lower than the bottom 1m of the foundation pit 1.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A field foundation pit drainage device, comprising:
the water collection deep wells (2) are arranged around the foundation pit (1), the water drainage open trenches (9) are dug and arranged at the periphery of the foundation pit (1), and the electric cabinet (10), wherein the water collection deep wells (2) are positioned between the foundation pit (1) and the water drainage open trenches (9);
the water collection deep well (2) is internally provided with a water collection protection pipeline (3), the middle lower side of the interior of the water collection deep well (2) is filled with a sand filtering layer, the upper side of the sand filtering layer is filled with a soil layer (7), the soil layer (7) extends to the upper end of the water collection deep well (2), the bottom end of the outer wall of the water collection protection pipeline (3) is provided with a water filtering hole (4), the lower side of the interior of the water collection protection pipeline (3) is provided with a deep well pump (13), the deep well pump (13) is electrically connected with an electric cabinet (10), the upper part of the deep well pump (13) is provided with a water outlet (14), the upper side of the water outlet (14) is connected with an output pipeline (5), the upper side of the water collection deep well (2) is provided with a concentration pipeline (6), the concentration pipeline (6) is communicated with the top ends of the output pipelines (5), one side of the concentration pipeline (6) is connected with an output manifold (8), and one end of the output manifold (8) far away from the concentration pipeline (6) extends into the drain ditch (9);
a circle of water storage groove is dug at the bottom end of the interior of the foundation pit (1), the water storage groove is communicated with at least one water collection deep well (2) through a communication channel, the communication channel is inclined, and one end, connected with the water storage groove, of the communication channel is higher than the other end;
the upper side of the outer wall of the deep-well pump (13) is provided with a limiting convex ring (15), the lower side of the inner wall of the water collection protection pipeline (3) is provided with a supporting ring (12), the lower side of the deep-well pump (13) penetrates through the limiting convex ring (15), the limiting convex ring (15) is supported on the supporting ring (12), the lower side of the inner part of the water collection protection pipeline (3) is provided with an inner filter screen (11), and the inner filter screen (11) covers all water filtering holes (4);
a sliding rail (17) is arranged on the inner wall of the water collection protection pipeline (3), the sliding rail (17) is parallel to the axis of the water collection protection pipeline (3), a sliding groove (16) matched with the sliding rail (17) is formed in the outer wall of the limit convex ring (15), and the sliding groove (16) is connected to the sliding rail (17) in a sliding manner;
a clamping groove (18) is formed in the side wall of the water outlet (14), an elastic clamping block (19) matched with the clamping groove (18) is arranged on the lower side of the outer wall of the output pipeline (5), and the position of the elastic clamping block (19) corresponds to that of the clamping groove (18);
the water outlet pipe comprises a water outlet (14) and is characterized by further comprising a salvaging mechanism, wherein the salvaging mechanism comprises a hollow movable ring (20), a hanging ring (24) arranged on the upper surface of the movable ring (20) and a clamping mechanism arranged on the movable ring (20), the clamping mechanism is connected with the water outlet (14) in a matched manner, and the diameter of the inner wall of the movable ring (20) is larger than that of the outer wall of the output pipe (5);
the outer wall of the movable ring (20) is provided with a sliding bayonet (25), the diameter of the outer wall of the movable ring (20) is not larger than the diameter of the inner wall of the output pipeline (5), and the sliding bayonet (25) corresponds to and is matched with the sliding rail (17) in position;
the clamping mechanism comprises a clamping arm (21) which is rotationally connected to the inner wall of the movable ring (20), a supporting spring (22) is connected between the outer wall of the clamping arm (21) and the inner wall of the movable ring (20), a clamping block (23) is arranged at the bottom end of the clamping arm (21), and the clamping block (23) corresponds to the clamping groove (18) in position and is adaptive to the clamping groove.
2. A field foundation pit drainage device according to claim 1, wherein: the water collection protection pipeline (3) comprises a plurality of unit pipelines which are connected end to end in sequence, the unit pipelines are connected through threads, the water filtering holes (4) are formed in the side wall of the unit pipeline at the lowest side, and the bottom end of the unit pipeline at the lowest side is closed.
3. A field foundation pit drainage device according to claim 1, wherein: the bottom of the water collection protection pipeline (3) is lower than the bottom 2m-3m of the foundation pit (1), the diameter of the inner wall of the water collection deep well (2) is 1.5-2 times that of the outer wall of the water collection protection pipeline (3), the minimum distance between the water collection deep well (2) and the foundation pit (1) is 1.5m, a cushion layer made of a leakage-proof plastic material or a rubber material is laid on the inner wall of the open drainage ditch (9), and the distance between adjacent water collection deep wells (2) is 10m-30m.
4. A field foundation pit drainage device according to claim 1, wherein: the elastic clamping block (19) comprises an elastic telescopic mechanism arranged on the outer wall of the output pipeline (5) and a clamping block arranged at the telescopic end of the elastic telescopic mechanism, the clamping block is matched with the clamping groove (18), and the elastic telescopic mechanism is embedded in the outer wall of the output pipeline (5).
5. A field foundation pit drainage device according to claim 1, wherein: the bottom of the output pipeline (5) is in a closed shape with a big top and a small bottom, and the inner wall of the water outlet (14) is in a conical shape attached to the bottom of the output pipeline (5).
6. A field foundation pit drainage construction method is characterized in that: the drainage construction method for the foundation pit is based on the drainage device for the foundation pit according to any one of claims 1 to 5, and comprises the following specific steps:
s1: digging water-collecting deep wells (2) on the periphery of the foundation pit (1) before the foundation pit is opened, wherein the water-collecting deep wells (2) are arranged in rows, and the water-collecting deep wells (2) are positioned on at least one side edge of the periphery of the foundation pit (1);
s2: a water collecting protection pipeline (3) is downwards placed in a water collecting deep well (2) until the bottom end of the water collecting protection pipeline (3) reaches the bottom of the inner cavity of the water collecting deep well (2), the upper part of the water collecting protection pipeline (3) is 20cm-30cm higher than the water collecting deep well (2), a sand filtering layer is filled in a gap between the water collecting deep well (2) and the water collecting protection pipeline (3), a soil layer (7) is filled and compacted on the upper side of the inside of the water collecting deep well (2), a deep well pump (13) is connected with an output pipeline (5), and then the deep well pump (13) is connected with a rope and is downwards placed in the water collecting protection pipeline (3);
s3: the electric cabinet (10) controls the deep well pump (13) to pump water and discharge the water through the open drain ditch (9), the foundation pit (1) is dug after pumping the water for 2-3 days, a water storage groove is dug at the inner edge of the foundation pit (1), water is collected in the water storage groove, and the collected water is discharged into the water collection deep well (2) through the communication channel.
7. The site foundation pit drainage construction method of claim 6, wherein the method comprises the following steps: in the digging process of the foundation pit (1), the deep well pump (13) is periodically started and stopped, so that the water level at the lower part of the foundation pit (1) is lower than 1m at the bottom of the foundation pit (1).
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