CN211006724U

CN211006724U - Plugging device for dewatering well

Info

Publication number: CN211006724U
Application number: CN201921760338.1U
Authority: CN
Inventors: 张方方; 李鹏; 席义泉
Original assignee: Hubei Guangyuan Geotechnical Engineering Co ltd
Current assignee: Hubei Guangyuan Geotechnical Engineering Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-07-14
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a precipitation well plugging device has solved the problem that prior art precipitation well block structure can not in time be opened once more after the shutoff, and its technical essential is: the utility model provides a precipitation well plugging device, precipitation well import and foundation ditch bed course parallel and level, the vertical drain pipe that stretches into in the foundation ditch bottom plate on the top that is provided with in the precipitation well, the removable shutoff that is used for that is provided with in the foundation ditch bottom plate precipitation well and the shutoff subassembly of drain pipe, the shutoff subassembly including set up in the bearing plate of precipitation well top, the bearing plate bottom surface seted up the diameter with the unanimous shutoff groove of drain pipe, releasable connection has the connecting piece between bearing plate and the foundation ditch bed course. Through the scheme, the bearing plate can be detached when needed, the bottom end below the bearing plate extends into the drain pipe in the precipitation well to be exposed, subsequently accumulated water in the precipitation well can be pumped out, and the situation that the accumulated water is accumulated in the precipitation well to excessively influence the water level reduction near the foundation pit is avoided.

Description

Plugging device for dewatering well

Technical Field

The utility model belongs to the technical field of the technique of foundation ditch precipitation well and specifically relates to a precipitation well plugging device is related to.

Background

The deep foundation pit dewatering is a great problem, particularly, the engineering with large width of the foundation pit, high underground water level and large water content aims at a large-caliber dewatering well, strengthens the soil body at the bottom of the foundation pit, improves the strength of the soil body at the bottom of the pit, reduces the uplift of the bottom of the pit and the deformation of an enclosure structure, prevents the excessive settlement of the surface outside the pit, is beneficial to the stability of a side slope, prevents a landslide, dredges underground water in the pit, and is convenient for an excavator and workers to construct and operate in the pit. At present, precipitation wells are mostly arranged at the periphery of a deep foundation pit to reduce the underground water level of the foundation pit, but the precipitation effect of the foundation pit with large area and large span of the foundation pit is poor, the construction requirement cannot be met, the precipitation wells can be properly drained in the middle of the foundation pit, the drainage effect of the precipitation wells can be well achieved, but the plugging of the precipitation wells for bottom plate construction is a big technical problem, after the traditional precipitation wells are plugged, the ground pressure from the bottom plate can damage the pipe walls and the water stop wing rings of the precipitation wells, and further the precipitation function of the precipitation wells is influenced.

In order to solve the problems, the Chinese patent with the publication number of CN208777323U provides a plugging device for a precipitation well, wherein the precipitation well penetrates through a cushion layer and extends into a bottom plate, the plugging device comprises a pressure-bearing plugging assembly arranged on the precipitation well, a pressure-bearing plugging assembly arranged outside the precipitation well and a precipitation well filter tube arranged in the precipitation well, the pressure-bearing plugging assembly arranged on the precipitation well comprises two circles of water stopping wing rings arranged at the end part of the bottom plate of the precipitation well and a steel cover plate used for plugging the port of the precipitation well, and further comprises a sandstone layer and a concrete layer which are sequentially filled in the precipitation well filter tube from bottom to top, and the steel cover plate is covered on the concrete layer; locate the outside pressure-bearing shutoff subassembly of precipitation well and cover including the opening and establish the pressure-bearing subassembly in the precipitation well upper end downwards, the pressure-bearing subassembly includes that the opening sets up downwards, establishes the pressure-bearing bucket of precipitation well tip cover in inside.

However, the above scheme still has the following defects: when the groundwater of gathering in the precipitation well is more, can't in time take out from the external world, will be unfavorable for the permanent use of precipitation well after the too big water pressure in the precipitation well, also can't continue to reduce the water level in the foundation ditch simultaneously, remain further to improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can see off precipitation well plugging device of ponding in the precipitation well when needs.

The utility model discloses a can realize through following technical scheme:

the utility model provides a precipitation well plugging device, precipitation well import and foundation ditch bed course parallel and level, the vertical drain pipe that stretches into in the foundation ditch bottom plate on the top that is provided with in the precipitation well, the removable shutoff that is used for that is provided with in the foundation ditch bottom plate precipitation well and the shutoff subassembly of drain pipe, the shutoff subassembly including set up in the bearing plate of precipitation well top, the bearing plate bottom surface seted up the diameter with the unanimous shutoff groove of drain pipe, releasable connection has the connecting piece between bearing plate and the foundation ditch bed course.

Through adopting above-mentioned technical scheme, the connecting piece is removable setting when the bearing plate realizes stabilizing the connection with the foundation ditch bed course with the help of the connecting piece for the bearing plate can demolish when needs, and then realizes stretching into the drain pipe in the precipitation well with the bottom of bearing plate below and exposes, because the bed course of foundation ditch is stretched out on the drain pipe top, follow-up can be very convenient take out ponding in the precipitation well like the suction pump, avoid ponding gathering too much in the precipitation well, influence the water level reduction near the foundation ditch.

Further setting the following steps: the mounting groove that is used for placing the bearing plate is offered to the adaptation on the foundation ditch bottom plate, the mounting groove diameter is greater than precipitation well, the connecting piece is provided with the multiunit, the multiunit the connecting piece is in along angular interval distribution such as circumference week side of bearing plate.

Through adopting above-mentioned technical scheme, utilize the connecting piece that multiunit equidistant set up to realize that the bearing plate is firm to be installed in precipitation well top, realize effectively the effective shutoff to precipitation well.

Further setting the following steps: the connecting piece includes that the level is buried underground fastening plate, bottom in the foundation ditch bed course and fastening plate fixed connection top passes the screw rod and the threaded connection of bearing plate fastening sleeve on the screw rod top, fastening sleeve with the bearing plate is contradicted.

Through adopting above-mentioned technical scheme, when passing the bearing plate with the help of the screw rod, its both ends are connected respectively and are buried the intraformational mounting plate of foundation ditch and support the fastening sleeve of tightly on the bearing plate underground, realize bearing plate fixed mounting, and because the mounting plate level is buried underground in the foundation ditch backing plate, make the screw rod have good resistance to plucking ability for shutoff effect is stronger during bearing plate fixed mounting.

Further setting the following steps: the top surface of the pressure-bearing plate is provided with a placing groove for the fastening sleeve to be integrally placed in, the top end of the screw rod is positioned in the placing groove, and the fastening sleeve is an inner hexagonal sleeve with an inner hexagonal groove formed in the top end.

Through adopting above-mentioned technical scheme, make and do not have the arch on the bearing plate face, and then make things convenient for constructor's removal and work on the foundation ditch bottom plate, the while fastening sleeve chooses for use the hexagon socket head cap sleeve to make its dismantlement in the standing groove convenient and fast more.

Further setting the following steps: the dewatering well is characterized in that a gravel layer is arranged in the dewatering well, a concrete layer is arranged between the gravel layer and the wellhead of the dewatering well, the bottom end of the drainage pipe is located on the gravel layer, and a screen plate is fixedly arranged at the bottom end of the drainage pipe.

Through adopting above-mentioned technical scheme, the grit layer is located the bottom of precipitation well and when can carrying out ponding, can support the reinforcement to precipitation well inner wall, and the concrete layer that is located precipitation well top then can further promote the shutoff effect of precipitation well.

Further setting the following steps: an expansion rubber strip layer is arranged between the gravel layer and the concrete layer, and a pouring template is arranged between the expansion rubber strip layer and the concrete layer.

Through adopting above-mentioned technical scheme, inflation adhesive tape layer can be when meeting water inflation and then effectively prevent groundwater from upwards permeating from the gap between concrete and the drain pipe, improves dewatering well's shutoff effect.

Further setting the following steps: and the top end of the drainage pipe is in threaded connection with an anti-spraying cover.

Through adopting above-mentioned technical scheme, utilize and prevent spouting the lid and make the bearing plate prevent the groundwater in the precipitation well direct blowout when water pressure is too big after shifting, provide constructor transition time, avoid influencing constructor work in the foundation ditch.

Further setting the following steps: the top surface of the bearing plate is concavely provided with a transfer groove, and a transfer rod is fixedly arranged in the transfer groove.

Through adopting above-mentioned technical scheme, be convenient for upwards lifting the bearing plate, and then operate convenient and fast more when need take ponding in the precipitation well out.

To sum up, the utility model discloses a beneficial technological effect does: the bearing plate utilizes bolt, fastening sleeve and mounting plate demountable installation in the bottom of foundation ditch, realizes shutoff precipitation well and drain pipe to can dismantle when needs and open the drain pipe, and then utilize the drain pipe to discharge the ponding in the precipitation well, reach in time adjust the precipitation well in water pressure, guarantee the purpose of the sustainable near reduction foundation ditch water level of precipitation well.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Reference numerals: 1. dewatering wells; 2. a cushion layer; 3. a base plate; 4. a pressure bearing plate; 5. mounting grooves; 6. plugging the groove; 7. an anti-spray cover; 8. a fastening plate; 9. a screw; 10. fastening the sleeve; 11. a transfer tank; 12. a transfer lever; 13. a placement groove; 14. a sandstone layer; 15. a concrete layer; 16. an expanded adhesive tape layer; 17. pouring a template; 18. and a water discharge pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a precipitation well 1 plugging device, wherein, precipitation well 1's import and the 2 parallel and level in bed course of foundation ditch to the vertical drain pipe 18 that stretches into in foundation ditch bottom plate 3 in the top that is provided with in precipitation well 1. And meanwhile, a plugging component for plugging the dewatering well 1 and the drain pipe 18 is detachably arranged in the foundation pit bottom plate 3, and comprises a bearing plate 4 arranged above the dewatering well 1 and a connecting piece fixedly connecting the bearing plate 4 with the foundation pit cushion layer 2.

For installation bearing plate 4, the mounting groove 5 that is used for placing bearing plate 4 is offered to the adaptation on foundation ditch bottom plate 3, and simultaneously, the diameter of mounting groove 5 is greater than precipitation well 1 and mounting groove 5 and the coaxial setting of drain pipe 18. The connecting pieces are arranged on the bearing plate 4 in multiple groups, and the multiple groups of connecting pieces are distributed on the peripheral side of the bearing plate 4 at equal angular intervals along the circumferential direction. The bottom surface of the pressure bearing plate 4 is provided with a plugging groove 6 with the diameter consistent with that of the water discharge pipe 18, and the top end of the water discharge pipe 18 extends into the plugging groove 6 and is connected with an anti-spraying cover 7 in a threaded manner.

The connecting piece includes the mounting plate 8 that the level was buried underground in foundation ditch bed course 2, the bottom and 8 fixed connection tops of mounting plate then upwards pass the screw rod 9 of bearing plate 4 along vertical direction and threaded connection at the fastening sleeve 10 on screw rod 9 top, and fastening sleeve 10 is contradicted with bearing plate 4. The fixing plate 8 embedded in the foundation pit cushion layer 2 and the fastening sleeve 10 abutting against the bearing plate 4 are respectively connected with two ends of the screw 9 while penetrating through the bearing plate 4, so that the bearing plate 4 is fixedly installed, and the screw 9 has excellent anti-pulling capacity because the fixing plate 8 is horizontally embedded in the foundation pit cushion layer 2, so that the bearing plate 4 is more stable during installation, meanwhile, the bearing plate 4 can be lifted out of the installation groove 5 after the fastening sleeve 10 is rotated to be separated from the screw 9, the drain pipe 18 below is exposed, and then the drainage operation of the dewatering well 1 can be carried out from the top of the drain pipe 18 by means of a pumping tool. And in order to facilitate the transfer of the bearing plate 4, a transfer groove 11 is concavely arranged on the top surface of the bearing plate 4, and a transfer rod 12 is fixedly arranged in the transfer groove 11.

Meanwhile, the top surface of the bearing plate 4 is provided with a placing groove 13 for placing the whole fastening sleeve 10, and the top end of the screw rod 9 is positioned in the placing groove 13. Fastening sleeve 10 chooses for use the hexagon socket head cap sleeve that the hexagonal groove in the top was seted up simultaneously, and then does not have the arch on making 4 faces of bearing plate, and then makes things convenient for constructor's removal and work on foundation ditch bottom plate 3, and fastening sleeve 10 chooses for use the hexagon socket head cap sleeve simultaneously and makes its dismantlement in standing groove 13 convenient and fast more.

In addition, a sand-stone layer 14 is arranged in the precipitation well 1, a concrete layer 15 is arranged between the sand-stone layer 14 and the wellhead of the precipitation well 1, the bottom end of the drainage pipe extends to the bottom of the sand-stone layer 14, and a net plate is fixedly arranged at the bottom end of the drainage pipe 18. An expansion rubber strip layer 16 is further arranged between the sand stone layer 14 and the concrete layer 15, and a pouring template 17 is arranged between the expansion rubber strip layer 16 and the concrete layer 15. The expansion adhesive tape layer 16 can expand when meeting water, so that the groundwater is effectively prevented from permeating upwards from a gap between the concrete and the drain pipe 18, and the plugging effect of the dewatering well 1 is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a precipitation well plugging device which characterized in that: precipitation well (1) import and foundation ditch bed course (2) parallel and level, the vertical drain pipe (18) that the top stretched into in foundation ditch bottom plate (3) that are provided with in precipitation well (1), the removable shutoff that is provided with in foundation ditch bottom plate (3) precipitation well (1) and the shutoff subassembly of drain pipe (18), the shutoff subassembly including set up in bearing plate (4) of precipitation well (1) top, bearing plate (4) bottom surface seted up the diameter with the unanimous shutoff groove (6) of drain pipe (18), releasable connection has the connecting piece between bearing plate (4) and foundation ditch bed course (2).

2. The dewatering well plugging device according to claim 1, wherein: the utility model discloses a precipitation well, including foundation ditch bottom plate (3), mounting groove (5) that are used for placing bearing plate (4) are offered to the adaptation on foundation ditch bottom plate (3), mounting groove (5) diameter is greater than precipitation well (1), the connecting piece is provided with multiunit, multiunit the connecting piece is in along angular interval distribution such as circumference week side of bearing plate (4).

3. The dewatering well plugging device according to claim 2, wherein: the connecting piece include the level bury underground mounting plate (8), the bottom in foundation ditch bed course (2) with mounting plate (8) fixed connection top passes screw rod (9) and the threaded connection of bearing plate (4) fastening sleeve (10) on screw rod (9) top, fastening sleeve (10) with bearing plate (4) are contradicted.

4. The dewatering well plugging device according to claim 3, wherein: the top surface of the pressure bearing plate (4) is provided with a placing groove (13) for the whole fastening sleeve (10) to be placed in, the top end of the screw rod (9) is positioned in the placing groove (13), and the fastening sleeve (10) is a hexagon socket head sleeve with a hexagon socket at the top end.

5. The dewatering well plugging device according to claim 1, wherein: be provided with gravel layer (14) in precipitation well (1), gravel layer (14) with be provided with concrete layer (15) between precipitation well (1) well head, drain pipe (18) bottom is located gravel layer (14), drain pipe (18) bottom mounting is provided with the otter board.

6. The dewatering well plugging device according to claim 5, wherein: an expansion rubber strip layer (16) is arranged between the gravel layer (14) and the concrete layer (15), and a pouring template (17) is arranged between the expansion rubber strip layer (16) and the concrete layer (15).

7. The dewatering well plugging device according to claim 1, wherein: the top end of the drain pipe (18) is in threaded connection with an anti-spraying cover (7).

8. The dewatering well plugging device according to claim 1, wherein: the top surface of the pressure bearing plate (4) is concavely provided with a transfer groove (11), and a transfer rod (12) is fixedly arranged in the transfer groove (11).