CN109882113B - Construction method of dewatering well plugging structure - Google Patents
Construction method of dewatering well plugging structure Download PDFInfo
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- CN109882113B CN109882113B CN201910173712.6A CN201910173712A CN109882113B CN 109882113 B CN109882113 B CN 109882113B CN 201910173712 A CN201910173712 A CN 201910173712A CN 109882113 B CN109882113 B CN 109882113B
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- plugging
- steel pipe
- dewatering well
- pumping
- hole
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Abstract
A construction method of a dewatering well plugging structure is adopted, the dewatering well plugging structure comprises a cover plate, a first through hole is formed in the center of the cover plate, a plurality of fastener fixing holes are formed in the periphery of the first through hole, a sleeve is fixedly assembled at the bottom of the cover plate and coaxially arranged with the first through hole, an upper plugging steel plate is fixedly assembled in the sleeve, a second through hole is formed in the center of the upper plugging steel plate, a water pumping steel pipe is slidably assembled in the second through hole, a plurality of third through holes are formed in the periphery of the second through hole, a support is slidably assembled in the plurality of third through holes, a bottom plugging steel plate is fixedly assembled at the bottom of the support, the water pumping steel pipe is provided with a valve, and the valve is; the plugging structure and the construction method have the advantages of economy, practicability, simplicity, practicability, good plugging quality, prevention of bottom plate leakage, stable overall structure, high bearing capacity and the like, and the highest bearing capacity can reach 800 kN.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering, and particularly relates to a construction method of a dewatering well plugging structure.
Background
Along with the development and utilization of underground space, the excavation depth of underground engineering is deeper and deeper, and the problems of soil body slippage, water leakage of a supporting structure, instability of a foundation pit and the like are easily caused by construction under the condition of high water level. In order to ensure the construction safety, effective measures are required to reduce the underground water level, and the common method is to arrange a certain number of precipitation wells in a building bottom plate for precipitation treatment. However, for precipitation wells with high water pressure and high water yield, how to plug well mouths is a construction problem, and no good solution is provided at present.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a construction method of a dewatering well plugging structure, which adopts the following technical scheme:
the utility model provides a precipitation well block structure, includes the apron, first through-hole has been seted up at the apron center, has seted up a plurality of fastener fixed orificess all around of first through-hole, and the fixed sleeve pipe that is equipped with in apron bottom, the sleeve pipe is with the coaxial setting of first through-hole, and the cover intraductal fixed be equipped with upper portion shutoff steel sheet, and the second through-hole has been seted up at upper portion shutoff steel sheet center, and the second through-hole internal slip is equipped with the steel pipe that draws water, and a plurality of third through-holes have been seted up all around to the second through-hole, and the slip is equipped with the support in a plurality of third through.
A construction method of a dewatering well plugging structure adopts the dewatering well plugging structure and comprises the following steps:
3, pumping the water level in the precipitation well to be 1.5m below the wellhead of the precipitation well by using a pumping steel pipe;
step 8, cutting off the support below the wellhead of the dewatering well;
and step 10, brushing antirust paint on the cover plate for protection.
Compared with the prior art, the invention has the beneficial effects that:
the plugging structure and the construction method have the advantages of economy, practicability, simplicity, practicability, good plugging quality, prevention of bottom plate leakage, stable overall structure, high bearing capacity and the like, the highest bearing capacity can reach 800kN, the plugging structure and the construction method are mainly used for solving the plugging construction problem of the wellhead with high water pressure, and meanwhile, the plugging structure and the construction method have reference significance for the water outlet problem of side holes and rock wall holes.
Drawings
FIG. 1 is a schematic view of a plugging structure of a dewatering well according to the present invention;
FIG. 2 is a schematic top view of the cover plate of the present invention;
FIG. 3 is a schematic view of the construction method of the present invention;
fig. 4 is a partially enlarged schematic view of a portion a of fig. 3.
Wherein: a cover plate 1; a first through-hole 2; fastener fixing holes 3; a mounting hole 4; a sleeve 5; an upper plugging steel plate 6; a second through hole 7; a water pumping steel pipe 8; a third through hole 9; a support 10; a bottom plugging steel plate 11; a valve 12; an annular groove 13; a silicone adhesive 14; and a water stop strip 15.
Detailed Description
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1 to 4, the invention provides a plugging structure for a dewatering well, which comprises a cover plate 1, wherein a first through hole 2 is formed in the center of the cover plate 1, 48 fastener fixing holes 3 are formed in the periphery of the first through hole 2 in an array manner, 48 corresponding mounting holes 4 are formed in the concrete surface around the wellhead of the dewatering well, a fastener penetrates through the fastener fixing holes 3 and then is in threaded connection with the mounting holes 4, so as to fix the cover plate 1, the fastener can be a common high-strength bolt or an expansion bolt, a sleeve 5 is fixedly arranged at the bottom of the cover plate 1, the outer diameter of the sleeve 5 is slightly smaller than the inner diameter of the dewatering well, the sleeve 5 and the first through hole 2 are coaxially arranged, an upper plugging steel plate 6 is fixedly arranged in the sleeve 5, a second through hole 7 is formed in the center of the upper plugging steel plate 6, a water pumping steel pipe 8 is slidably arranged in the second through, a support 10 is arranged in the third through holes 9 in a sliding mode, the support 10 is composed of 12 steel bars, a bottom plugging steel plate 11 is fixedly arranged at the bottom of the support 10, a water pumping steel pipe 8 is provided with a valve 12, and the valve 12 is located above the upper plugging steel plate 6.
A construction method of a dewatering well plugging structure adopts the dewatering well plugging structure and comprises the following steps:
3, pumping the water level in the precipitation well to be 1.5m below the wellhead of the precipitation well by using a pumping steel pipe 8;
step 8, cutting off the support 10 below the wellhead of the dewatering well;
and step 10, brushing antirust paint on the cover plate 1 for protection.
The above examples are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above examples, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (1)
1. A construction method of a dewatering well plugging structure is adopted, the dewatering well plugging structure comprises a cover plate, a first through hole is formed in the center of the cover plate, a plurality of fastener fixing holes are formed in the periphery of the first through hole, a sleeve is fixedly assembled at the bottom of the cover plate and is coaxially arranged with the first through hole, an upper plugging steel plate is fixedly assembled in the sleeve, a second through hole is formed in the center of the upper plugging steel plate, a water pumping steel pipe is slidably assembled in the second through hole, a plurality of third through holes are formed in the periphery of the second through hole, a support is slidably assembled in the third through holes, a bottom plugging steel plate is fixedly assembled at the bottom of the support, the water pumping steel pipe is provided with a valve, and the valve is located above the upper plugging steel plate.
Step 1, pumping water on the ground near a dewatering well by using a water pump;
step 2, inserting the dewatering well plugging structure into a dewatering well, enabling the lower end of the pumping steel pipe to be located 1.5m below the wellhead of the dewatering well, and temporarily fixing the upper end of the pumping steel pipe and the upper end of the support;
3, pumping the water level in the precipitation well to be 1.5m below the wellhead of the precipitation well by using a pumping steel pipe;
step 4, forming an annular groove on the concrete surface around the wellhead of the dewatering well, smearing silicone adhesive, and installing a water stop strip in the annular groove;
step 5, positioning the cover plate to enable the cover plate to be concentric with the wellhead of the dewatering well, adhering the cover plate to the silicone adhesive, and fixing the cover plate by using a fastening piece;
step 6, lifting the bottom plugging steel plate by using a support, enabling the lower end of the pumping steel pipe to be located 1m below the wellhead of the dewatering well, and enabling the upper surface of the bottom plugging steel plate and the lower end of the pumping steel pipe to be tightly squeezed and welded and fixed;
step 7, welding the pumping steel pipe and the upper plugging steel plate together, and winding a water stopping expansion adhesive tape at the joint of the pumping steel pipe and the upper plugging steel plate after the welding seam is cooled;
step 8, cutting off the support below the wellhead of the dewatering well;
step 9, cutting off the pumping steel pipe below the wellhead of the precipitation well and above the valve, and pouring grouting material into the precipitation well for plugging;
and step 10, brushing antirust paint on the cover plate for protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173712.6A CN109882113B (en) | 2019-03-07 | 2019-03-07 | Construction method of dewatering well plugging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173712.6A CN109882113B (en) | 2019-03-07 | 2019-03-07 | Construction method of dewatering well plugging structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882113A CN109882113A (en) | 2019-06-14 |
| CN109882113B true CN109882113B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910173712.6A Active CN109882113B (en) | 2019-03-07 | 2019-03-07 | Construction method of dewatering well plugging structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3543851A (en) * | 1968-10-21 | 1970-12-01 | Tenneco Oil Co | Apparatus for producing water from a well |
| CN103334444A (en) * | 2013-07-09 | 2013-10-02 | 中国一冶集团有限公司 | Decompression type blocking method for foundation pit dewatering well |
| CN103343543A (en) * | 2013-07-09 | 2013-10-09 | 中国一冶集团有限公司 | Foundation pit dewatering well pressure-reduction-type plugging method |
| CN103911988A (en) * | 2014-04-03 | 2014-07-09 | 大连理工大学 | Novel wall protection pile for foundation pit supporting |
| CN203768925U (en) * | 2014-04-02 | 2014-08-13 | 于航 | Seal device for dewatering well in foundation pit |
| CN203768926U (en) * | 2014-04-08 | 2014-08-13 | 江苏扬州建工建设集团有限公司 | Basement deep well plugging device |
-
2019
- 2019-03-07 CN CN201910173712.6A patent/CN109882113B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3543851A (en) * | 1968-10-21 | 1970-12-01 | Tenneco Oil Co | Apparatus for producing water from a well |
| CN103334444A (en) * | 2013-07-09 | 2013-10-02 | 中国一冶集团有限公司 | Decompression type blocking method for foundation pit dewatering well |
| CN103343543A (en) * | 2013-07-09 | 2013-10-09 | 中国一冶集团有限公司 | Foundation pit dewatering well pressure-reduction-type plugging method |
| CN203768925U (en) * | 2014-04-02 | 2014-08-13 | 于航 | Seal device for dewatering well in foundation pit |
| CN103911988A (en) * | 2014-04-03 | 2014-07-09 | 大连理工大学 | Novel wall protection pile for foundation pit supporting |
| CN203768926U (en) * | 2014-04-08 | 2014-08-13 | 江苏扬州建工建设集团有限公司 | Basement deep well plugging device |
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|---|---|
| CN109882113A (en) | 2019-06-14 |
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