CN109868832B - Foundation pit drainage device and construction method thereof - Google Patents
Foundation pit drainage device and construction method thereof Download PDFInfo
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- CN109868832B CN109868832B CN201910064884.XA CN201910064884A CN109868832B CN 109868832 B CN109868832 B CN 109868832B CN 201910064884 A CN201910064884 A CN 201910064884A CN 109868832 B CN109868832 B CN 109868832B
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 26
- 230000005484 gravity Effects 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims 1
- 210000001503 joint Anatomy 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 22
- 230000035515 penetration Effects 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 description 9
- 238000001764 infiltration Methods 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
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Abstract
The invention discloses a foundation pit dewatering and drainage device and a construction method thereof, relating to the technical field of constructional engineering, and the technical scheme is as follows: the foundation pit water lowering and draining device comprises a water collecting well arranged beside a foundation pit and a guide pipe penetrating into the wall of the water collecting well, wherein the guide pipe comprises a plurality of sub pipes connected end to end and an ejector head positioned at the end part of the guide pipe, the guide pipe is communicated with the inside of the water collecting well through the sub pipes, the ejector head is positioned at the end part of the guide pipe far away from the water collecting well, and a water seepage hole penetrating through the side wall of the sub pipe is formed in the sub pipe. The two ends of each sub-pipe are respectively provided with a clamping block and a clamping groove clamped with the clamping block of the adjacent sub-pipe, and the fastening direction of the clamping block and the clamping groove is along the radial direction of the sub-pipe. The foundation pit dewatering and drainage device and the construction method thereof have the advantages of improving the dewatering and drainage efficiency of the foundation pit and reducing the workload of workers; personnel can complete the installation of the guide pipe outside the water collecting well, the personnel do not need to enter the water collecting well, and the construction process is sanitary and safe; the conduit is not easily blocked by soil and the resistance of the conduit to penetration into the soil is low.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a foundation pit dewatering and drainage device and a construction method thereof.
Background
In the building engineering, a foundation pit is a soil pit dug at a foundation design position according to the base elevation and the base plane size. The foundation pit dewatering and drainage means that when a foundation pit is excavated, underground water level is higher than the excavated bottom surface, and underground water can continuously infiltrate into the pit, so that the foundation pit can be constructed under a dry condition, and precipitation work is performed to prevent slope instability, basic quicksand, pit bottom uplift, pit bottom piping and foundation bearing capacity reduction.
The existing foundation pit dewatering and drainage method is to dig a water collecting well beside a foundation pit, underground water at the height of the foundation pit can permeate into the water collecting well, and then a water pump is adopted to pump the underground water out of the water collecting well, so that the water level at the foundation pit is lowered.
The above prior art solutions have the following drawbacks: when the infiltration ability of soil is relatively poor, the speed of groundwater infiltration sump pit is slower, leads to the foundation ditch to fall the inefficiency of drainage on the one hand, and the infiltration speed of on the other hand groundwater is less than the pumping speed of water pump, leads to the manual work to frequently stop the water pump, has increased artificial amount of labour.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the foundation pit dewatering and drainage device which has the advantages of improving the foundation pit dewatering and drainage efficiency and reducing the manual workload.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a drainage device falls in foundation ditch, is including locating the other sump pit of foundation ditch, still including the pipe that penetrates the sump pit wall of a well, the pipe includes the sub-pipe of a plurality of end to end, is located the top of pipe tip, the pipe communicates inside the sump pit through the sub-pipe, the top is located the pipe and keeps away from the tip of sump pit, be equipped with the infiltration hole that link up the sub-pipe lateral wall on the sub-pipe.
Through above-mentioned technical scheme, personnel can squeeze into the wall of a well of sump pit with the top in, thereby it is whole to squeeze into the sub-pipe in proper order at the tip of top, and the pipe extends into in the other soil of sump pit. Underground water in the soil can enter the water collecting well through the guide pipe, and the guide pipe greatly enhances the efficiency of water seepage of the underground water into the water collecting well. When personnel pumped water to the sump pit with the water pump, the situation that ponding was taken out light rapidly was difficult for appearing, and the water pump can keep long-time operation, has improved the efficiency that the foundation ditch falls the drainage on the one hand, and on the other hand has reduced artificial work load.
Preferably, the two ends of each sub-pipe are respectively provided with a clamping block and a clamping groove for clamping the clamping block of the adjacent sub-pipe, and the clamping direction of the clamping block and the clamping groove is along the radial direction of the sub-pipe.
By the technical scheme, the ejector head and the plurality of sub-pipes can be connected into a whole conduit in a clamping mode of the clamping grooves and the clamping blocks, so that convenience is brought; the sub-pipe and the top head can not generate relative displacement along the axial direction, and the sub-pipe and the top head also have certain connection strength along the radial direction.
Preferably, the sub-pipe is provided with a metal net for covering the water seepage holes.
Through above-mentioned technical scheme, the metal mesh can stop soil outside when guaranteeing the infiltration, and soil is difficult for blockking up infiltration hole or inside the daughter pipe.
Preferably, the metal net is attached to the inner wall of the sub-pipe in a cylindrical shape, an elastic plate which is curled into a cylindrical shape is further arranged in the sub-pipe, the metal net is pressed on the inner wall of the sub-pipe by the elastic plate, and a water through hole is formed in the elastic plate corresponding to the water through hole.
Through above-mentioned technical scheme, the elasticity of elastic plate compresses tightly the metal mesh and is fixed in the daughter pipe, and the body, metal mesh, the elastic plate three of daughter pipe can assemble through the mode that cup joint each other, and is comparatively convenient.
Preferably, be equipped with on the elastic plate to the downthehole bellied bulge loop of infiltration, the limbers is located the bulge loop, the bulge loop orders about the metal mesh to the downthehole deformation of infiltration, makes the metal mesh is protruding to the position with the outer wall parallel and level of sub-pipe.
Through above-mentioned technical scheme, because the outer wall parallel and level of metal mesh and son pipe, then the outer wall of son pipe tends to level and smooth, and the oral area in infiltration hole is difficult for producing the resistance to the removal of son pipe in soil, and the resistance that the son pipe penetrated soil is less.
Preferably, the device further comprises a tool, the tool comprises a fixed cylinder penetrating through the inside of the water collecting well, a stacking frame for stacking the top head and the sub-pipe is arranged in the fixed cylinder, and the axes of the stacked top head and the stacked sub-pipe are parallel to each other and are along the horizontal direction; still be provided with the pneumatic cylinder in the fixed cylinder, the pneumatic cylinder is located the bottom that stacks the frame, when the pneumatic cylinder extends, the pneumatic cylinder will stack in the wall of a well that the top or the daughter pipe of frame bottom pushed into the sump pit.
Through the technical scheme, the jacking head and the sub-pipes are sequentially stacked in the stacking frame of the tool, the jacking head is located at the bottommost position of the stacking frame, and then the fixing cylinder is inserted into the water collecting well. The personnel control the pneumatic cylinder extension, and the pneumatic cylinder is pressed the top into the wall of a well of sump pit. Then the personnel control the pneumatic cylinder to shorten, then the son pipe of top falls to stacking the frame bottom because of the action of gravity, and personnel control the pneumatic cylinder extension again, and the pneumatic cylinder is pressed the son pipe of stacking the frame bottom in the wall of a well of sump pit, and the installation of all son pipes is accomplished to the circulation action like this to form the pipe wholly in soil. Through the tool, personnel can complete the installation of the guide pipe outside the water collecting well, so that the diameter of the water collecting well can be smaller in digging area, and the difficulty in forming the water collecting well is reduced; personnel do not need to enter the water collecting well, and the construction process is sanitary and safe.
Preferably, the distance for pushing the sub-pipe by the hydraulic cylinder is set as follows: when the hydraulic cylinder pushes the sub-pipe to be limited, the hydraulic cylinder is shortened, and the sub-pipe on the hydraulic cylinder falls down along with gravity and is just buckled with the front sub-pipe through the clamping block and the clamping groove.
Through above-mentioned technical scheme, when the pneumatic cylinder extends to the dead point, personnel control pneumatic cylinder shortens, and then the son pipe of top falls to stacking the frame bottom because of the action of gravity, and this son pipe passes through fixture block, the automatic lock of draw-in groove with preceding top or preceding son pipe, and degree of automation is high.
Preferably, the outer walls of the top head and the sub-pipe are provided with positioning planes, and the top head and the sub-pipe are in sliding contact with the inner wall of the stacking frame through the positioning planes; the stacking frame limits the rotation of the top head and the sub-pipe through the positioning plane, so that the sub-pipe can be just buckled with the front sub-pipe through the clamping block and the clamping groove when falling.
According to the technical scheme, when a person stacks the ejector head and the sub-pipe in the stacking frame, the stacking frame limits the rotation of the ejector head and the sub-pipe through the positioning plane, so that the stability of the placement positions of the ejector head and the sub-pipe is improved; and when the sub-pipe on the upper part falls down along with gravity, the front sub-pipe and the rear sub-pipe are reliably buckled through the clamping block and the clamping groove.
The second purpose of the invention is to provide a construction method which has the advantages of conveniently installing a guide pipe and improving the drainage efficiency of a foundation pit.
The technical purpose of the invention is realized by the following technical scheme:
a construction method uses the foundation pit dewatering and drainage device, and comprises the following steps:
the method comprises the following steps: digging a water collecting well beside the foundation pit, wherein the depth of the water collecting well is greater than the design depth of the foundation pit;
step two: pumping accumulated water in the water collecting well completely by using a water pump, and then taking out the water pump;
step three: taking a tool, sequentially stacking a top head and a sub-pipe in a stacking frame to enable the top head to be located at the bottommost position of the stacking frame, and then inserting a fixed cylinder into a water collecting well;
step four: the personnel control the hydraulic cylinder to extend, and the hydraulic cylinder presses the top head into the well wall of the water collecting well;
step five: when the hydraulic cylinder extends to a stop point, a person controls the hydraulic cylinder to shorten, the sub-pipe above the hydraulic cylinder falls to the bottom of the stacking frame under the action of gravity, and the sub-pipe is automatically buckled with the front top head or the front sub-pipe through the clamping block and the clamping groove;
step six: the personnel control the hydraulic cylinder to extend, and the hydraulic cylinder presses the sub-pipe at the bottom of the stacking frame into the wall of the water collecting well;
step seven: circularly executing the fifth step and the sixth step until all the sub-pipes are driven into the wall of the water collecting well;
step eight: and taking out the tool from the water collecting well, and pumping water in the water collecting well by using the water pump again.
Through the technical scheme, personnel can complete the installation of the guide pipe outside the water collecting well, so that the diameter of the water collecting well can be smaller in digging ground, and the difficulty in forming the water collecting well is reduced; personnel do not need to enter the water collecting well, and the construction process is sanitary and safe. After the construction is completed, the guide pipe greatly enhances the efficiency of water seepage of the underground water into the water collecting well. When personnel pumped water to the sump pit with the water pump, improved the efficiency of foundation ditch drainage.
Preferably, in the step eight, after the tool is taken out, a new top head and a new sub pipe are placed in the stacking frame again, and then the tool is installed in the water collecting well; the fixed barrel is rotated to a different angle from the mounting position of the front duct, and then steps four to seven are re-executed.
Through the technical scheme, the drainage device can be provided with the plurality of guide pipes to be communicated with the water collecting well through the method, and the efficiency of water seepage of underground water into the water collecting well is further improved.
In summary, compared with the prior art, the beneficial effects of the invention are as follows:
1. the foundation pit dewatering and drainage device and the construction method thereof have the advantages of improving the dewatering and drainage efficiency of the foundation pit and reducing the workload of workers;
2. personnel can complete the installation of the guide pipe outside the water collecting well, the personnel do not need to enter the water collecting well, and the construction process is sanitary and safe;
3. the conduit is not easily blocked by soil and the resistance of the conduit to penetration into the soil is low.
Drawings
Fig. 1 is a schematic view of a foundation pit dewatering and drainage device according to a first embodiment;
FIG. 2 is a structural view of a catheter according to the first embodiment;
FIG. 3 is a cross-sectional view A-A of FIG. 2, mainly highlighting the internal structure of the sub-tube;
FIG. 4 is an exploded view of a sub-tube according to the first embodiment;
fig. 5 is a perspective view of the tool and the guide tube according to the first embodiment after combination.
In the figure, 10, a water collecting well; 1. a conduit; 11. a sub-tube; 12. ejecting the head; 13. a clamping block; 14. a card slot; 15. positioning a plane; 111. a water seepage hole; 16. a metal mesh; 17. an elastic plate; 171. a convex ring; 172. a water through hole; 2. a fixed cylinder; 21. folding edges; 3. stacking frames; 4. and a hydraulic cylinder.
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 foundation pit dewatering and drainage device disclosed by the invention comprises a water collecting well 10 arranged beside a foundation pit, a guide pipe 1 penetrating through the wall of the water collecting well 10 and a tool for installing the guide pipe 1.
Referring to fig. 1 and 2, the catheter 1 comprises a plurality of sub-tubes 11 connected end to end, a plug 12 at the end of the catheter 1. The tip of top 12 is sharp-pointed form, and top 12 is located the tip that pipe 1 kept away from water collecting well 10, and the sub-pipe 11 that deviates from top 12 communicates in water collecting well 10 inside, and pipe 1 inserts in the soil of water collecting well 10 inner wall along the horizontal direction.
Two ends of the sub-pipe 11 are respectively provided with a clamping block 13 and a clamping groove 14 clamped with the clamping block 13 of the adjacent sub-pipe 11, and the buckling direction of the clamping block 13 and the clamping groove 14 is along the radial direction of the sub-pipe 11; the same structure of the fixture block 13 and the fixture groove 14 is also arranged between the top head 12 and the adjacent sub-pipe 11. The top head 12 and the plurality of sub-pipes 11 can be connected into a whole conduit 1 in a clamping manner through the clamping grooves 14 and the clamping blocks 13, the sub-pipes 11 and the top head 12 cannot generate relative displacement along the axial direction, and the sub-pipes 11 and the top head 12 also have certain connection strength along the radial direction. The outer walls of the ejector 12 and the sub-pipe 11 are respectively provided with a positioning plane 15, when the guide pipe 1 is connected into a whole, the positioning planes 15 of the adjacent ejector 12 and the sub-pipe 11 are combined to form a same plane, and the sliding direction of the clamping connection of the clamping block 13 and the clamping groove 14 is parallel to the positioning plane 15.
Referring to fig. 3 and 4, the sub-pipe 11 is provided with a plurality of water seepage holes 111 penetrating through the side wall of the sub-pipe 11, and the water seepage holes 111 are distributed at intervals along the axial direction and the circumferential direction of the sub-pipe 11. A metal net 16 is arranged in the sub-pipe 11 in a penetrating way, and an elastic plate 17 is arranged in the metal net 16 in a penetrating way. The metal net 16 is curled into a cylinder shape by a rectangular stainless steel net, and the metal net 16 is tightly attached to the inner wall of the sub-pipe 11 through a net surface; the elastic plate 17 is formed by rolling a rectangular stainless steel thin plate into a cylindrical shape, the elastic plate 17 is tightly attached to the net surface of the metal net 16 through the plate surface, and the metal net 16 is tightly pressed and fixed in the sub-pipe 11 by the elastic force of the elastic plate 17. A convex ring 171 is arranged on the elastic plate 17 corresponding to the position of the water seepage hole 111, the inner ring hole of the convex ring 171 is a water through hole 172, and the water through hole 172 penetrates through the elastic plate 17; the convex ring 171 protrudes into the water seepage hole 111 towards the water seepage hole 111, and the convex ring 171 drives the metal mesh 16 to deform towards the water seepage hole 111, so that the metal mesh 16 protrudes to the position flush with the outer wall of the sub-pipe 11.
With this arrangement, the main body of the sub-pipe 11, the metal mesh 16, and the elastic plate 17 can be easily assembled. Water in the soil can pass through the water through holes 172 coaxial with the water seepage holes 111 to enter the sub-pipes 11, the metal mesh 16 can stop the soil outside while water seepage can be guaranteed, and the soil is not easy to block the water through holes 172 or the inside of the sub-pipes 11. Since the metal net 16 is flush with the outer wall of the sub-pipe 11, the outer wall of the sub-pipe 11 tends to be smooth, the opening of the water seepage hole 111 is not easy to generate resistance to the movement of the sub-pipe 11, and the resistance of the sub-pipe 11 penetrating into soil is small.
Referring to fig. 1 and 5, the fixture includes a fixed cylinder 2 inserted into the water collecting well 10, the outer diameter of the fixed cylinder 2 is the same as the inner diameter of the water collecting well 10, and the fixed cylinder 2 does not twist or move radially after the fixed cylinder 2 is installed in the water collecting well 10. The top of the fixed cylinder 2 is turned outwards to form a folded edge 21, and the folded edge 21 is used for being abutted to the ground at the top of the water collecting well 10 so as to limit the fixed cylinder 2 from falling into the water collecting well 10.
A stacking frame 3 for stacking the top 12 and the sub-pipe 11 is arranged in the fixed cylinder 2, the length direction of the stacking frame 3 is along the axial direction of the fixed cylinder 2, and the stacking frame 3 deviates from the axial line of the fixed cylinder 2 and is positioned close to the inner wall of the fixed cylinder 2. The axes of the top 12 and the sub-pipe 11 after being stacked are parallel to each other and are in the horizontal direction, and the stacking rack 3 is just sized for the single top 12 or the sub-pipe 11 to pass through. When a person stacks the top 12 and the sub-pipes 11, the top 12 and the sub-pipes 11 are enabled to be in sliding contact with the inner wall of the stacking rack 3 through the positioning plane 15, the clamping blocks 13 of the top 12 and the sub-pipes 11 are enabled to face the same direction, and the stacking rack 3 limits the rotation of the top 12 and the sub-pipes 11 through the positioning plane 15.
Still be provided with pneumatic cylinder 4 in the fixed cylinder 2, pneumatic cylinder 4 is located the bottom of stacking frame 3, and the extending direction of pneumatic cylinder 4 is along the horizontal direction. When the hydraulic cylinder 4 extends, the hydraulic cylinder 4 pushes the top 12 or the sub-pipe 11 at the bottom end of the stacking frame 3 into the wall of the water collecting well 10. The distance for the hydraulic cylinder 4 to push the sub-pipe 11 is set as follows: when the hydraulic cylinder 4 pushes the sub-pipe 11 to be limited, the hydraulic cylinder 4 is shortened, and the sub-pipe 11 on the upper side falls along with gravity and is just buckled with the front sub-pipe 11 through the clamping block 13 and the clamping groove 14. The personnel control the extension and retraction of the hydraulic cylinder 4 through the controller, the controller of the hydraulic cylinder 4 is positioned outside the water collecting well 10, and the controller is communicated with the hydraulic cylinder 4 through a hydraulic pipeline, which is not described in detail herein; the hydraulic cylinder 4 needs to be matched with an external hydraulic pump to work.
Example two:
a construction method uses the foundation pit dewatering and drainage device, and comprises the following steps:
the method comprises the following steps: and digging a water collecting well 10 beside the foundation pit, wherein the depth of the water collecting well 10 is greater than the design depth of the foundation pit.
Step two: the water pump is used for pumping out the accumulated water in the water collecting well 10, and then the water pump is taken out. During the subsequent frock use, the normal work and the personnel of hydraulic pump can not influenced to ponding observe.
Step three: taking the tool, stacking the top 12 and the sub-pipe 11 in the stacking frame 3 in sequence to enable the top 12 to be located at the bottommost position of the stacking frame 3, and then inserting the fixed cylinder 2 into the water collecting well 10.
Step four: the person controls the hydraulic cylinder 4 to extend and the hydraulic cylinder 4 presses the plug 12 into the wall of the water collecting well 10.
Step five: when the hydraulic cylinder 4 extends to a stop point, a person controls the hydraulic cylinder 4 to shorten, the sub-pipe 11 above falls to the bottom of the stacking rack 3 under the action of gravity, and the sub-pipe 11 is automatically buckled with the front top head 12 or the front sub-pipe 11 through the clamping block 13 and the clamping groove 14.
Step six: the person controls the hydraulic cylinder 4 to extend, and the hydraulic cylinder 4 presses the sub-pipe 11 at the bottom of the stacking frame 3 into the wall of the water collecting well 10.
Step seven: and circularly executing the fifth step and the sixth step until all the sub-pipes 11 are driven into the wall of the water collecting well 10. The extension and retraction of the hydraulic cylinder 4 and the movement of the sub-pipe 11 can be observed by an operator outside the water collecting well 10.
Step eight: taking the tool out of the water collecting well 10, placing a new top 12 and a new sub-pipe 11 in the stacking frame 3 again after the tool is taken out, and then loading the tool into the water collecting well 10; the person turns the angle of the fixed barrel 2 to a position different from the installation position of the front guide duct 1 and then re-executes the steps four to seven to install another guide duct 1 in the soil. The drainage device can be provided with a plurality of guide pipes 1 which are communicated with a water collecting well 10 through the method. After the guide pipe 1 is installed, the worker takes out the tool and reuses the water pump to pump water in the water collecting well 10.
To sum up, the conduit 1 extends into the soil from the inside of the water collecting well 10 along the horizontal direction, the underground water in the soil can enter the water collecting well 10 through the conduit 1, and the efficiency of the underground water seepage into the water collecting well 10 is greatly enhanced by the conduit 1. When personnel pumped water to sump pit 10 with the water pump, the situation that ponding was taken out light rapidly was difficult for appearing, and the water pump can keep long-time operation, has improved the efficiency that the foundation ditch falls the drainage on the one hand, and on the other hand has reduced artificial work load.
Since the diameter of the pipe 1 penetrating into the soil is small, the pipe 1 does not significantly affect the structural strength of the building substrate, and thus the pipe 1 does not need to be taken out. Because personnel can complete the installation of the conduit 1 outside the water collecting well 10, the diameter of the water collecting well 10 can be smaller, and the difficulty in opening the water collecting well 10 is reduced; personnel do not need to enter the water collecting well 10, and the construction process is sanitary and safe.
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 (4)
1. The utility model provides a drainage device falls in foundation ditch, is including locating by the foundation ditch sump pit (10), characterized by: the water collecting well is characterized by further comprising a guide pipe (1) penetrating through the wall of the water collecting well (10), wherein the guide pipe (1) comprises a plurality of sub pipes (11) connected end to end and a top head (12) positioned at the end part of the guide pipe (1), the guide pipe (1) is communicated with the inside of the water collecting well (10) through the sub pipes (11), the top head (12) is positioned at the end part, far away from the water collecting well (10), of the guide pipe (1), and seepage holes (111) penetrating through the side walls of the sub pipes (11) are formed in the sub pipes (11);
a metal net (16) for covering the water seepage holes (111) is arranged on the sub-pipe (11); the metal net (16) is attached to the inner wall of the sub-pipe (11) in a cylindrical shape, an elastic plate (17) which is curled into a cylindrical shape is further arranged in the sub-pipe (11), the metal net (16) is tightly pressed on the inner wall of the sub-pipe (11) through the elastic plate (17), and a water through hole (172) is formed in the position, corresponding to the water seepage hole (111), of the elastic plate (17);
a convex ring (171) protruding into the water seepage hole (111) is arranged on the elastic plate (17), the water through hole (172) is positioned in the convex ring (171), and the convex ring (171) drives the metal net (16) to deform towards the water seepage hole (111) so that the metal net (16) protrudes to a position flush with the outer wall of the sub-pipe (11);
two ends of each sub-pipe (11) are respectively provided with a clamping block (13) and a clamping groove (14) clamped with the clamping block (13) of the adjacent sub-pipe (11), and the clamping direction of the clamping blocks (13) and the clamping grooves (14) is along the radial direction of the sub-pipe (11); the tool comprises a fixed cylinder (2) penetrating through the water collecting well (10), a stacking frame (3) used for stacking a top head (12) and a sub-pipe (11) is arranged in the fixed cylinder (2), and the axes of the stacked top head (12) and the stacked sub-pipe (11) are parallel to each other and are in the horizontal direction; a hydraulic cylinder (4) is further arranged in the fixed cylinder (2), the hydraulic cylinder (4) is located at the bottom of the stacking frame (3), and when the hydraulic cylinder (4) extends, the hydraulic cylinder (4) pushes a top (12) or a sub-pipe (11) at the bottom end of the stacking frame (3) into a well wall of the water collecting well (10); the distance that hydraulic cylinder (4) pushes sub-pipe (11) sets up as: when the hydraulic cylinder (4) pushes the sub-pipe (11) to be limited, the hydraulic cylinder (4) is shortened, the sub-pipe (11) on the upper side falls along with gravity and is just buckled with the front sub-pipe (11) through the clamping block (13) and the clamping groove (14).
2. A foundation pit dewatering and drainage device as claimed in claim 1, wherein: the outer walls of the top head (12) and the sub-pipe (11) are respectively provided with a positioning plane (15), and the top head (12) and the sub-pipe (11) are in sliding butt joint with the inner wall of the stacking frame (3) through the positioning planes (15); the stacking frame (3) limits the rotation of the ejector head (12) and the sub-pipe (11) through the positioning plane (15), so that the sub-pipe (11) can be just buckled with the front sub-pipe (11) through the clamping block (13) and the clamping groove (14) when falling.
3. A construction method is characterized in that: an excavation drainage apparatus as claimed in any one of claims 1 to 2, comprising the steps of:
the method comprises the following steps: digging a water collecting well (10) beside the foundation pit, wherein the depth of the water collecting well (10) is greater than the design depth of the foundation pit;
step two: pumping accumulated water in the water collecting well (10) completely by using a water pump, and then taking out the water pump;
step three: taking a tool, sequentially stacking a top head (12) and a sub-pipe (11) in a stacking frame (3) to enable the top head (12) to be located at the bottommost position of the stacking frame (3), and then inserting a fixed cylinder (2) into a water collecting well (10);
step four: the personnel control the hydraulic cylinder (4) to extend, and the hydraulic cylinder (4) presses the top (12) into the wall of the water collecting well (10);
step five: when the hydraulic cylinder (4) extends to a stop point, a person controls the hydraulic cylinder (4) to shorten, the sub-pipe (11) above falls to the bottom of the stacking frame (3) due to the action of gravity, and the sub-pipe (11) is automatically buckled with the front top head (12) or the front sub-pipe (11) through the clamping block (13) and the clamping groove (14);
step six: the personnel control the hydraulic cylinder (4) to extend, and the hydraulic cylinder (4) presses the sub-pipe (11) at the bottom of the stacking frame (3) into the wall of the water collecting well (10);
step seven: circularly executing the fifth step and the sixth step until all the sub-pipes (11) are driven into the wall of the water collecting well (10);
step eight: and taking out the tool from the water collecting well (10), and pumping water in the water collecting well (10) by using the water pump again.
4. A construction method according to claim 3, wherein: in the eighth step, after the tool is taken out, a new ejector head (12) and a new sub-pipe (11) are placed in the stacking frame (3) again, and then the tool is installed in the water collecting well (10); rotating the angle of the fixed barrel (2) to be different from the installation position of the front guide pipe (1), and then re-executing the steps from four to seven.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910064884.XA CN109868832B (en) | 2019-01-23 | 2019-01-23 | Foundation pit drainage device and construction method thereof |
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| CN201910064884.XA CN109868832B (en) | 2019-01-23 | 2019-01-23 | Foundation pit drainage device and construction method thereof |
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| CN109868832A CN109868832A (en) | 2019-06-11 |
| CN109868832B true CN109868832B (en) | 2021-01-29 |
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|---|---|---|---|---|
| CN111021384B (en) * | 2019-10-30 | 2021-12-28 | 浙江大地勘测设计有限公司 | A foundation ditch drainage device for artesian head step-down control |
| CN111945758A (en) * | 2020-08-27 | 2020-11-17 | 河南科技大学 | Reusable dewatering tank, foundation pit operation surface dewatering system and method |
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| JPH02178494A (en) * | 1988-12-28 | 1990-07-11 | Kubota Ltd | Re-laying method for existing pipe |
| CN2133567Y (en) * | 1992-08-11 | 1993-05-19 | 安徽省驷马山修造厂 | Push bench |
| CN202450536U (en) * | 2011-12-29 | 2012-09-26 | 青岛新华友建工集团股份有限公司 | Shallow dewatering and plugging construction device in foundation pit |
| CN104358927B (en) * | 2014-10-30 | 2016-05-11 | 国强建设集团有限公司 | A kind of pipe jacking construction method and conduit jacking |
| CN204384467U (en) * | 2015-01-16 | 2015-06-10 | 中国建材检验认证集团苏州有限公司 | A kind of for carrying the sampling device of I shape module |
| CN108487276A (en) * | 2018-04-27 | 2018-09-04 | 陕西建工机械施工集团有限公司 | A kind of embed-type shallow-layer combined water drain pipe and construction method |
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Denomination of invention: A foundation pit drainage device and its construction method Granted publication date: 20210129 Pledgee: Agricultural Bank of China Limited Taishun County sub branch Pledgor: WENZHOU QIANQUAN CONSTRUCTION Co.,Ltd. Registration number: Y2024330001837 |