CN210797602U

CN210797602U - Plugging structure of dewatering well

Info

Publication number: CN210797602U
Application number: CN201921359543.7U
Authority: CN
Inventors: 孙涛; 汪勉涛; 院文彪; 韩强; 孙晓帅; 吴建龙
Original assignee: Mingda Ocean Engineering Co ltd
Current assignee: Mingda Ocean Engineering Co ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-19
Anticipated expiration: 2029-08-20

Abstract

The utility model relates to a plugging structure of precipitation well, including the precipitation well, the precipitation well includes the wellhole and inserts the well casing of arranging the wellhole inside in, be provided with the filter layer between well casing and the wellhole pore wall, the top of well casing is provided with the well lid that has the through-hole, sealing connection between well lid and the well casing, the top of well lid is provided with the shut-in steel pipe that is linked together with the through-hole of well lid, the top of well lid has set gradually the concrete pad, first waterproof layer, protective layer and bottom plate concrete layer, the top of shut-in steel pipe is provided with the shutoff piece, the outside of shutoff piece is provided with wraps up the second waterproof layer in inside with the shutoff piece completely, bottom plate concrete layer is with the shutoff piece completely, the shut. The utility model discloses have and can be when construction bed course and waterproof layer, be located the inside immersible pump of precipitation well and the drain pipe still can draw water to the inside of precipitation well to ensure that the inside water of sump pit can not cause destruction to bed course and waterproof layer.

Description

Plugging structure of dewatering well

Technical Field

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

Background

Underground water treatment in deep foundation pit operation is a key and difficult point in construction. At present, the main measures for treating underground water in the market are precipitation, water stopping and a combination mode of precipitation and water stopping. The standard and site construction generally requires that the precipitation elevation is 0.5m below a foundation trench to meet the structural construction requirement, but most of the depths of the water collecting pits are larger than the depth, if a mode of large-area precipitation to the elevation of the bottom of the water collecting pit is adopted, the difficulty is high, the pumping cost is high, and the underground water waste is serious. Therefore, how to treat the underground water at the position of the water collecting pit is a difficult problem which is often encountered in the current construction. It is a common practice to construct a precipitation well in the middle or around the sump for local precipitation treatment.

The submersible pump and the drain pipe are adopted for pumping the water in the dewatering well, the water in the dewatering well is pumped by the submersible pump, and the dewatering well is discharged by the drain pipe. The pump of a local dewatering well can be stopped only when the concrete of the bottom plate is poured, if the pump is stopped firstly and then a series of procedures such as a cushion layer, a waterproof layer, a protective layer and the concrete pouring of the bottom plate are constructed, the water level of a water collecting pit can be increased, and the cushion layer and the waterproof layer are damaged. The pump is therefore generally selected to be stopped before the floor concrete is poured, at which point the waterproofing process is completed. How to plug the dewatering well after the waterproof procedure is finished becomes a key point and a difficult point.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a plugging structure of precipitation well, it has can be in construction bed course and waterproof layer, and the inside immersible pump and the drain pipe that are located the precipitation well still can draw water to the inside of precipitation well to ensure that the inside water of sump pit can not cause destruction to bed course and waterproof layer.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a plugging structure of a dewatering well comprises the dewatering well, wherein the dewatering well comprises a well hole and a well pipe inserted in the well hole, a filter layer is arranged between the well pipe and the wall of the well hole, a well cover which is covered at the top end of the well pipe and provided with a through hole is arranged at the top end of the well pipe, the well cover and the well pipe are connected in a sealing manner, the through hole on the well cover is communicated with the well pipe, a well plugging steel pipe which is vertically arranged and communicated with the through hole of the well cover is arranged above the well cover, the well plugging steel pipe and the well cover are fixed in a sealing manner, a concrete cushion layer, a first waterproof layer, a protective layer and a bottom plate concrete layer are sequentially arranged above the well cover, a plugging piece which seals the top end of the well plugging steel pipe is arranged at the top end of the well plugging steel pipe, the upper surface of the protective layer is, and the bottom plate concrete layer completely buries the plugging piece, the well plugging steel pipe and the second waterproof layer inside.

Through adopting above-mentioned technical scheme, at the construction concrete bed course, the waterproof layer, the in-process of protective layer, thereby can pass the shut-in steel pipe with the drain pipe and continue to draw water to the inside of precipitation well, the concrete bed course, when waterproof layer and protective layer construction finish the back and need pour the bottom plate concrete, stop the immersible pump and draw water, the hole through the shutoff piece with the shut-in steel pipe is sealed, after will sealing the well steel pipe, pouring of bottom plate concrete is being carried out, thereby at the bed course, the in-process of waterproof layer construction, water in the sump pit can not lead to the fact destruction to bed course and waterproof layer.

The utility model discloses further set up to: the plugging piece comprises a pipe sleeve, the bottom end of the pipe sleeve is sleeved outside the well plugging steel pipe and is fixedly connected with the well plugging steel pipe in a sealing mode, and a plug for sealing an inner hole of the pipe sleeve is arranged at the top end of the pipe sleeve.

By adopting the technical scheme, the pipe sleeve and the well plugging steel pipe are connected together in a sealing way, and the inner hole of the pipe sleeve is sealed by the plug, so that the well plugging steel pipe is sealed, and the water in the dewatering well can not flow out from the top hole opening of the well plugging steel pipe.

The utility model discloses further set up to: and an elastic sealing gasket is arranged between the plug and the well plugging steel pipe inside the pipe sleeve.

Through adopting above-mentioned technical scheme, further plug up the well-plugging steel pipe through the rubber pad, make water be difficult for flowing out from the top drill way of well-plugging steel pipe.

The utility model discloses further set up to: the bottom of sealed pad is provided with and seals up well steel pipe hole assorted chock plug, the chock plug stretches into in the hole of sealing up the well steel pipe.

By adopting the technical scheme, the sealing performance of the sealing gasket for sealing the inner hole of the well-sealing steel pipe is ensured.

The utility model discloses further set up to: the plug is connected with the pipe sleeve through threads.

Through adopting above-mentioned technical scheme, can be quick link together end cap and pipe sleeve, save the time of shutoff pipe sleeve.

The utility model discloses further set up to: and the pipe sleeve is in threaded connection with the well plugging steel pipe.

Through adopting above-mentioned technical scheme, be convenient for link together pipe sleeve and shut-in steel pipe and can guarantee the leakproofness between pipe sleeve and the shut-in steel pipe simultaneously.

The utility model discloses further set up to: the top of well casing is provided with the jack that can make well lid male.

Through adopting above-mentioned technical scheme, place the well lid in the jack to when concreting the cushion, the difficult condition that appears the dislocation of well lid.

The utility model discloses further set up to: and a sealing ring is arranged between the hole wall of the jack and the well cover.

Through adopting above-mentioned technical scheme, increase the leakproofness between well lid and the well casing, avoid water to flow out from the gap between well lid and the well casing.

The utility model discloses further set up to: the well sealing steel pipe and the well lid are welded and fixed, and the welding mode adopts full welding.

Through adopting above-mentioned technical scheme, guarantee the leakproofness between shut-in steel pipe and the well lid.

The utility model discloses further set up to: the first waterproof layer extends to the surface of the outer side wall of the well-sealing steel pipe, and the second waterproof layer is connected with the first waterproof layer.

Through adopting above-mentioned technical scheme, first waterproof layer and second waterproof layer are totally with well-plugging steel pipe, shutoff piece parcel in inside, and under the condition that the well-plugging steel pipe department appears leaking, still can prevent rivers through first waterproof layer and second waterproof layer and flow.

To sum up, the utility model discloses a beneficial technological effect does:

1. the dewatering well can be synchronously pumped continuously when a concrete cushion layer, a waterproof layer and a protective layer are constructed, and the pump is stopped when bottom plate concrete is poured, so that the cushion layer and the waterproof layer are not damaged by water in a sump;

2. the sealing gasket is arranged between the plug and the well sealing steel plate, so that the sealing performance of the top end of the well sealing steel plate is improved, and water is not easy to flow out from the top end orifice of the well sealing steel plate;

3. the plug is connected with the pipe sleeve in a threaded manner, so that the plug and the pipe sleeve can be quickly connected, and the sealing performance between the plug and the pipe sleeve can be ensured.

4. The top through the well casing sets up the jack, and the well lid inserts in the jack to guarantee that the well lid can not take place to remove at the in-process of concrete cushion construction, position.

Drawings

FIG. 1 is a schematic structural diagram of a plugging structure of a dewatering well;

FIG. 2 is a partial enlarged view of portion A of FIG. 1;

fig. 3 is a partially enlarged view of a portion B in fig. 1.

In the figure, 1, well pipe; 2. a filter layer; 3. a well cover; 31. a central through hole; 4. sealing the well steel pipe; 41. a threaded segment; 5. pipe sleeve; 6. a plug; 7. a gasket; 71. a plug head; 8. a concrete cushion; 9. a first waterproof layer; 10. a protective layer; 11. a bottom concrete layer; 12. a second waterproof layer; 13. a jack; 14. a seal ring; 15. a submersible pump; 16. 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 plugging structure of precipitation well, including the precipitation well, the precipitation well includes the wellhole and vertically inserts well casing 1 of arranging in the wellhole inside, is located to be provided with filter layer 2 between the pore wall of wellhole and the pipe wall of well casing 1. The top end of the well tubular 1 protrudes from the aperture of the borehole.

The well lid 3 with a central through hole 31 is arranged at the top end of the well pipe 1, and the well lid 3 covers the top end of the well pipe 1 and is connected with the well pipe 1 in a sealing mode. The central through hole on the well lid 3 is communicated with the inside of the well pipe 1.

Referring to fig. 1 and 2, the well lid 3 has a diameter smaller than the outer diameter of the well pipe 1 and larger than the inner diameter of the well pipe 1, and an insertion hole 13 matching the diameter of the well lid 3 is provided in the end surface of the top end of the well pipe 1, and the insertion hole 13 is provided coaxially with the inner hole of the well pipe 1. When the well lid 3 is closed on the top end of the well pipe 1, the well lid 3 is inserted into the insertion hole 13.

An annular groove is formed in the hole wall of the insertion hole 13, a sealing ring 14 is embedded into the annular groove, and the sealing ring 14 is exposed out of the notch of the annular groove. When inserting well lid 3 inside jack 13, well lid 3 extrudees sealing washer 14 to guarantee the leakproofness between well casing 1 and the well lid 3.

Referring to fig. 1, the top that is located well lid 3 is provided with the well sealing steel pipe 4 of vertical setting, and the hole of well sealing steel pipe 4 sets up relatively with central through hole 31 on the well lid 3 and the pipe wall of well sealing steel pipe 4 encloses the central through hole 31 of well lid 3 completely inside, and welded fastening and welding mode adopt full weld between well sealing steel pipe 4 and the well lid 3 to guarantee the leakproofness of well sealing steel pipe 4 and well lid 3 junction.

Referring to fig. 1 and 3, the outer surface of the pipe wall of the well-plugging steel pipe 4 is provided with a threaded section 41, and the threaded section 41 is located at the top of the well-plugging steel pipe 4. The pipe sleeve 5 is arranged on the threaded section 41 of the well-sealing steel pipe 4, the inner hole of the pipe sleeve 5 is a through threaded hole, and the threaded hole of the pipe sleeve 5 is matched with the threaded section 41 of the well-sealing steel pipe 4. The bottom of the pipe sleeve 5 is connected with the well-plugging steel pipe 4 through threads. And a plug 6 which is positioned at the top end of the pipe sleeve 5 and is in threaded connection with the pipe sleeve 5 is arranged in an inner hole of the pipe sleeve 5, and the plug 6 is completely screwed into the pipe sleeve 5 during installation. When the plug 6 is installed in the pipe sleeve 5, a distance is reserved between the plug 6 and the well plugging steel pipe 4.

And a sealing gasket 7 made of elastic rubber material is arranged between the plug 6 and the well sealing steel pipe 4, and the sealing gasket 7 is extruded between the plug 6 and the well sealing steel pipe 4. The bottom end of the sealing gasket 7 is provided with a plug 71 extending into the inner hole of the well-sealing steel pipe 4, and the plug 71 and the sealing gasket 7 are integrally formed. The plug head 71 is a cylinder, and the diameter of the plug head 71 is matched with the diameter of the inner hole of the well-sealing steel pipe 4.

Concrete cushion 8, first waterproof layer 9, protective layer 10 and bottom plate concrete layer 11 have been laid in proper order from bottom to top in the top surface that is located well lid 3, and wherein concrete cushion 8, first waterproof layer 9 and protective layer 10 all are located the below of the screw thread section 41 of shut-in steel pipe 4. The first waterproof layer 9 extends to the outer wall surface of the well-sealed steel pipe 4 to the bottom end of the threaded section 41 when being laid. The bottom concrete layer 11 is made of reinforced concrete.

And a second waterproof layer 12 which completely wraps the pipe sleeve 5 is arranged outside the pipe sleeve 5, and the second waterproof layer 12 is connected with the first waterproof layer 9 laid on the outer wall surface of the well-sealing steel pipe 4. The bottom plate concrete layer 11 completely buries the well-sealing steel pipe 4, the pipe sleeve 5, the plug 6 and the second waterproof layer 12 inside.

When pumping water, the dewatering well is pumped by a submersible pump 15 and a drain pipe 16 which are arranged at the bottom end inside the well pipe 1. When plugging the dewatering well which is pumping water, the well sealing steel pipe 4 and the well lid 3 are welded together, and then the drain pipe 16 penetrates through the central through hole of the well lid 3 and the inner hole of the well sealing steel pipe 4, so that the well lid 3 covers the top end of the well pipe 1. At this time, the submersible pump 15 and the drain pipe 16 can continue to pump water in the precipitation well. Treat that 3 covers of well lid close the back that finishes, lay concrete cushion 8, first waterproof layer 9 and protective layer 10 in proper order in the top of well lid 3, treat that concrete cushion 8, first waterproof layer 9 and protective layer 10 are whole to be accomplished the back, at the top ligature bottom plate concrete layer 11 reinforcing bar in protective layer 10.

And after the steel bars are bound, stopping the submersible pump 15 and cutting off the drain pipe 16, and abandoning the submersible pump 15 and the drain pipe 16 in the well pipe 1. Then connecting the pipe sleeve 5 with the well sealing steel pipe 4, sequentially placing a sealing gasket 7 into the pipe sleeve 5, finally sealing the top end of the pipe sleeve 5 through a plug 6, finally applying a second waterproof layer 12 outside the pipe sleeve 5, connecting the second waterproof layer 12 with the first waterproof layer 9, finally pouring concrete, enabling the concrete and bound steel bars to jointly form a bottom plate concrete layer 11, and enabling the bottom plate concrete layer 11 to completely bury the pipe sleeve 5, the well sealing steel pipe 4 and the second waterproof layer 12 in the bottom plate concrete layer 11, thereby completing plugging of the dewatering well.

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. A plugging structure of dewatering well, includes dewatering well, dewatering well includes the well bore and inserts well casing (1) of placing in the well bore inside, be provided with filter layer (2) between well casing (1) and the well bore pore wall, its characterized in that: the well cover is characterized in that a well cover (3) which is covered on the top end of the well pipe (1) and provided with a through hole is arranged on the top end of the well pipe (1), the well cover (3) is in sealing connection with the well pipe (1), the through hole in the well cover (3) is communicated with the well pipe (1), a well plugging steel pipe (4) which is vertically arranged and is communicated with the through hole in the well cover (3) is arranged above the well cover (3), the well plugging steel pipe (4) and the well cover (3) are sealed and fixed, a gasket layer (8), a first concrete waterproof layer (9), a protective layer (10) and a bottom plate concrete layer (11) are sequentially arranged above the well cover (3), a plugging piece which is used for sealing the top end of the well plugging steel pipe (4) is arranged on the top end of the well plugging steel pipe (4), the upper surface of the protective layer (10) is lower than the plugging piece, a second waterproof layer (12, and the bottom plate concrete layer (11) completely buries the plugging piece, the well sealing steel pipe (4) and the second waterproof layer (12) inside.

2. A plugging structure of dewatering well according to claim 1, characterized in that: the plugging piece comprises a pipe sleeve (5), the bottom end of the pipe sleeve (5) is sleeved outside the well plugging steel pipe (4) and is fixedly connected with the well plugging steel pipe (4) in a sealing mode, and a plug (6) for sealing an inner hole of the pipe sleeve (5) is arranged at the top end of the pipe sleeve (5).

3. A plugging structure of dewatering well according to claim 2, characterized in that: and an elastic sealing gasket (7) is arranged between the plug (6) and the well sealing steel pipe (4) in the pipe sleeve (5).

4. A plugging structure of dewatering well according to claim 3, characterized in that: the bottom of sealed pad (7) is provided with and seals up well steel pipe (4) hole assorted chock plug (71), chock plug (71) stretch into seal up in the hole of well steel pipe (4).

5. A plugging structure of dewatering well according to claim 2, characterized in that: the plug (6) is in threaded connection with the pipe sleeve (5).

6. A plugging structure of dewatering well according to claim 2, characterized in that: the pipe sleeve (5) is in threaded connection with the well plugging steel pipe (4).

7. A plugging structure of dewatering well according to claim 1, characterized in that: the top of well casing (1) is provided with jack (13) that can make well lid (3) insert.

8. A plugging structure of dewatering well according to claim 7, characterized in that: and a sealing ring (14) is arranged between the hole wall of the jack (13) and the well lid (3).

9. A plugging structure of dewatering well according to claim 1, characterized in that: the well sealing steel pipe (4) and the well lid (3) are welded and fixed, and the welding mode adopts full welding.

10. A plugging structure of dewatering well according to claim 1, characterized in that: the first waterproof layer (9) extends to the surface of the outer side wall of the well-sealing steel pipe (4), and the second waterproof layer (12) is connected with the first waterproof layer (9).