CN112575801A - Method for plugging dewatering well - Google Patents
Method for plugging dewatering well Download PDFInfo
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- CN112575801A CN112575801A CN202011397960.8A CN202011397960A CN112575801A CN 112575801 A CN112575801 A CN 112575801A CN 202011397960 A CN202011397960 A CN 202011397960A CN 112575801 A CN112575801 A CN 112575801A
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- dewatering well
- concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
A method of plugging a dewatering well, the method comprising the steps of: presetting a blank area and a first construction area around the dewatering well; constructing a waterproof layer in the first construction area; constructing a bottom plate cushion layer on the waterproof layer; presetting a second construction area on the bottom plate cushion layer; constructing a water stop steel plate and a quick and easy closing net in the second construction area; presetting a third construction area in the blank area; constructing concrete in the third construction area; and constructing micro-expansion concrete on the concrete. The method for plugging the dewatering well is simple in construction, low in cost, good in waterproof durability, free of steel sleeves and wide in application range.
Description
Technical Field
The invention belongs to the technical field of dewatering wells in foundation pits in the engineering field, and particularly relates to a method for plugging a dewatering well.
Background
In the construction of large-area underground structures with higher underground water levels, a precipitation well is generally designed under a bottom plate of a building for the consideration of precipitation effect and building anti-floating, and precipitation can be stopped and the well is sealed after the construction of the underground structures is finished and the requirement of design anti-floating is met. The bottom plate is made of waterproof concrete due to underground water structural design, and the waterproof effect of the back shut-in well is great in the waterproof influence of the whole bottom plate.
Conventionally, a well sealing method is adopted, namely a steel pipe with a water stop ring is reserved in a precipitation well before bottom plate construction, when well sealing is achieved, the elevation of the top of the pipe is cut to 1/2 high positions of the thickness of a bottom plate, plain concrete is filled in the well, and concrete is poured after a steel blind plate is welded to seal a pipe opening.
The conventional method for sealing the well by using the reserved steel pipe has the defects that underground water is easy to corrode the steel pipe, and the flexible waterproof layer cannot form closure at the steel pipe. The hidden trouble of leakage exists for a long time.
Disclosure of Invention
In order to solve the problems, the invention provides a method for plugging a dewatering well, which comprises the following steps:
presetting a blank area and a first construction area around the dewatering well;
constructing a waterproof layer in the first construction area;
constructing a bottom plate cushion layer on the waterproof layer;
presetting a second construction area on the bottom plate cushion layer;
constructing a water stop steel plate and a quick and easy closing net in the second construction area;
presetting a third construction area in the blank area;
constructing concrete in the third construction area;
and constructing micro-expansion concrete on the concrete.
Preferably, the range of the blank area from the dewatering well is as follows: 600 mm-800 mm, the first construction area is close to the blank area outside.
Preferably, the waterproof layer exceeds the bottom plate cushion layer by more than or equal to 150 mm.
Preferably, the second construction area is separated from the dewatering well by the following range: 800 mm-1000 mm.
Preferably, the stagnant water steel sheet sets up the thickness direction position of bottom plate bed course, and bend downwards, four corners take the butt joint full weld after 45 degrees angle cutting.
Preferably, the fast and easy closing-in net is arranged at the center of the water stop steel plate along the horizontal direction.
Preferably, the step of presetting a third construction area in the blank area comprises the steps of:
digging the crushed stones around the dewatering well by 200 mm-300 mm;
filling the excavated area to the bottom of the bottom plate cushion layer by using plain concrete;
cutting the dewatering well to the bottom of the bottom plate bedding layer by 100 mm.
Preferably, said constructing concrete in said third construction zone comprises the steps of:
pouring quick-setting micro-expansion concrete into the dewatering well to the top of the dewatering well;
pouring the blank area around the dewatering well after the concrete in the dewatering well is solidified;
and (4) overlapping the construction waterproof layer in the blank area, adding a waterproof additional layer and then pouring a waterproof protective layer.
Preferably, the constructing of the micro-expansive concrete on the concrete comprises the steps of:
welding the steel bars at the post-cast strip;
cleaning up the garbage and the water-stopping steel plate slurry at the concrete joint;
and pouring and vibrating micro-expansion concrete with the strength higher than that of the bottom plate concrete by one grade, and then moisturizing and maintaining.
The method for plugging the dewatering well is simple in construction, low in cost, good in waterproof durability, free of steel sleeves and wide in application range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a dewatering well in a method for plugging the dewatering well according to the present invention;
FIG. 2 is a schematic view of a dewatering well in the method for plugging the dewatering well according to the present invention;
FIG. 3 is a schematic view of a dewatering well in the method for plugging the dewatering well according to the present invention;
FIG. 4 is a schematic view of a dewatering well in the method for plugging the dewatering well according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In an embodiment of the present application, as shown in fig. 1 to 4, the present invention provides a method for plugging a dewatering well, the method comprising the steps of:
a blank area 2 and a first construction area 3 are preset around the dewatering well 1;
constructing a waterproof layer 4 in the first construction area 3;
constructing a bottom plate cushion layer 5 on the waterproof layer 4;
presetting a second construction area 6 on the bottom plate cushion layer 5;
constructing a water stop steel plate 7 and a fast and easy closing net 8 in the second construction area 6;
presetting a third construction area 9 in the blank area 2;
constructing concrete 10 in the third construction area 9;
and constructing micro-expansion concrete 11 on the concrete 10.
In the embodiment of the application, when plugging a dewatering well, firstly, a waterproof layer 4 is constructed in the first construction area 3, then a bottom plate cushion 5 is constructed on the waterproof layer 4, then a second construction area 6 is preset on the bottom plate cushion 5, then a water stop steel plate 7 and a quick and easy closing net 8 are constructed in the second construction area 6, then a third construction area 9 is preset in the blank area 2, then concrete 10 is constructed in the third construction area 9, and finally micro-expansion concrete 11 is constructed on the concrete 10.
As shown in fig. 1 to 4, in the embodiment of the present application, the range of the blank area 2 from the dewatering well 1 is: 600 mm-800 mm, the first construction area 3 is adjacent to the outer side of the blank area 2.
In the embodiment of the present application, as shown in fig. 1 to 4, the waterproof layer 4 extends over the bottom mat layer 5 by 150mm or more.
As shown in fig. 1 to 4, in the embodiment of the present application, the range of the second construction area 6 from the dewatering well 1 is: 800 mm-1000 mm.
As shown in fig. 1 to 4, in the embodiment of the present application, the water stop steel plate 7 is disposed at the position of the bottom plate cushion layer 5 in the thickness direction, and is bent downward, and four corners are cut at an angle of 45 degrees and then are butt-welded.
As shown in fig. 1 to 4, in the embodiment of the present application, the fast and easy necking-in net 8 is disposed at the center of the water stopping steel plate 7 in the horizontal direction.
As shown in fig. 1 to 4, in the embodiment of the present application, the presetting of the third construction area 9 in the blank area includes the steps of:
digging crushed stones around the dewatering well 1 by 200 mm-300 mm;
filling the lower digging area to the bottom of the bottom plate cushion layer 5 by using plain concrete 10;
cutting the dewatering well 1 to the bottom of the bottom plate cushion layer 5 by 100 mm.
In the embodiment of the application, when a third construction area 9 is preset in the blank area, firstly, crushed stones around the dewatering well 1 are dug by 200 mm-300 mm, then, plain concrete 10 is used for filling the dug area to the bottom of the bottom plate cushion layer 5, and then, the dewatering well 1 is cut to the bottom of the bottom plate cushion layer 5 by 100 mm.
As shown in fig. 1 to 4, in the embodiment of the present application, the step of constructing concrete 10 in the third construction area 9 includes:
pouring quick-setting micro-expansion concrete 11 in the dewatering well 1 to the top of the dewatering well 1;
pouring the blank area 2 around the dewatering well 1 after the concrete 10 in the dewatering well 1 is solidified;
and (3) building a waterproof layer 4 in the blank area 2 in an overlapping manner, adding a waterproof additional layer, and pouring a waterproof protective layer.
In the embodiment of the present application, when the concrete 10 is constructed in the third construction area 9, firstly, quick setting micro-expansive concrete 11 is poured into the dewatering well 1 to the top of the dewatering well 1, then the blank area 2 around the dewatering well 1 is poured after the concrete 10 in the dewatering well 1 is solidified, and then the waterproof protective layer is poured after the waterproof layer 4 is lapped and constructed in the blank area 2 and the additional waterproof layer is added.
Referring to fig. 1 to 4, in the embodiment of the present application, the step of constructing a micro-expansive concrete 11 on the concrete 10 includes the steps of:
welding the steel bars at the post-cast strip;
cleaning the garbage at the joint of the concrete 10 and the slurry of the water stop steel plate 7;
and pouring and vibrating the micro-expansive concrete 11 with the strength higher than that of the bottom plate concrete by one grade, and then moisturizing and maintaining.
In the embodiment of the application, when the micro-expansion concrete 11 is constructed on the concrete 10, firstly, the steel bars at the post-cast strip are welded, then the slurry of the garbage and the water stop steel plate 7 at the joint of the concrete 10 is cleaned, and finally, the micro-expansion concrete 11 with the strength higher than that of the bottom plate concrete is poured and vibrated to be compact, and then the moisture is preserved.
The method for plugging the dewatering well is simple in construction, low in cost, good in waterproof durability, free of steel sleeves and wide in application range.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. A method of plugging a dewatering well, the method comprising the steps of:
presetting a blank area and a first construction area around the dewatering well;
constructing a waterproof layer in the first construction area;
constructing a bottom plate cushion layer on the waterproof layer;
presetting a second construction area on the bottom plate cushion layer;
constructing a water stop steel plate and a quick and easy closing net in the second construction area;
presetting a third construction area in the blank area;
constructing concrete in the third construction area;
and constructing micro-expansion concrete on the concrete.
2. The method for plugging a dewatering well according to claim 1, wherein the empty area is within a distance from the dewatering well: 600 mm-800 mm, the first construction area is close to the blank area outside.
3. The method for plugging a dewatering well according to claim 1, wherein the waterproof layer exceeds the bottom plate bedding layer by 150mm or more.
4. The method for plugging a dewatering well according to claim 1, wherein the second construction area is within the following range from the dewatering well: 800 mm-1000 mm.
5. The method for plugging a dewatering well according to claim 1, wherein the water stopping steel plate is arranged at the thickness direction of the bottom plate cushion layer, is bent downwards, and is subjected to butt full welding after being cut at four corners by 45 degrees.
6. The method for plugging a dewatering well according to claim 1, wherein the fast and easy closing-up net is arranged in a central position of the water stopping steel plate along a horizontal direction.
7. The method for plugging a dewatering well according to claim 1, wherein the step of presetting a third construction area in the blank area comprises the steps of:
digging the crushed stones around the dewatering well by 200 mm-300 mm;
filling the excavated area to the bottom of the bottom plate cushion layer by using plain concrete;
cutting the dewatering well to the bottom of the bottom plate bedding layer by 100 mm.
8. The method for plugging a dewatering well according to claim 1, wherein the constructing concrete in the third construction area comprises the steps of:
pouring quick-setting micro-expansion concrete into the dewatering well to the top of the dewatering well;
pouring the blank area around the dewatering well after the concrete in the dewatering well is solidified;
and (4) overlapping the construction waterproof layer in the blank area, adding a waterproof additional layer and then pouring a waterproof protective layer.
9. The method for plugging dewatering well according to claim 1, wherein the constructing micro-expansion concrete on the concrete comprises the steps of:
welding the steel bars at the post-cast strip;
cleaning up the garbage and the water-stopping steel plate slurry at the concrete joint;
and pouring and vibrating micro-expansion concrete with the strength higher than that of the bottom plate concrete by one grade, and then moisturizing and maintaining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397960.8A CN112575801A (en) | 2020-12-04 | 2020-12-04 | Method for plugging dewatering well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397960.8A CN112575801A (en) | 2020-12-04 | 2020-12-04 | Method for plugging dewatering well |
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| Publication Number | Publication Date |
|---|---|
| CN112575801A true CN112575801A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011397960.8A Pending CN112575801A (en) | 2020-12-04 | 2020-12-04 | Method for plugging dewatering well |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB170912A (en) * | 1920-07-20 | 1921-10-20 | Albert Francois | Improvements in cementation methods in connection with shaft sinking for cutting offa large flow of water |
| CN103031849A (en) * | 2012-12-27 | 2013-04-10 | 山东万鑫建设有限公司 | Method for construction of arranging dewatering well in foundation pit and flexibly closing dewatering well |
| CN106869188A (en) * | 2017-04-07 | 2017-06-20 | 黄以恒 | The constructing structure and its construction method of a kind of sole plate post-poured strip anti-seep water |
-
2020
- 2020-12-04 CN CN202011397960.8A patent/CN112575801A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB170912A (en) * | 1920-07-20 | 1921-10-20 | Albert Francois | Improvements in cementation methods in connection with shaft sinking for cutting offa large flow of water |
| CN103031849A (en) * | 2012-12-27 | 2013-04-10 | 山东万鑫建设有限公司 | Method for construction of arranging dewatering well in foundation pit and flexibly closing dewatering well |
| CN106869188A (en) * | 2017-04-07 | 2017-06-20 | 黄以恒 | The constructing structure and its construction method of a kind of sole plate post-poured strip anti-seep water |
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Application publication date: 20210330 |