CN211849528U - Confined water precipitation well shut-in device - Google Patents
Confined water precipitation well shut-in device Download PDFInfo
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- CN211849528U CN211849528U CN201922157903.1U CN201922157903U CN211849528U CN 211849528 U CN211849528 U CN 211849528U CN 201922157903 U CN201922157903 U CN 201922157903U CN 211849528 U CN211849528 U CN 211849528U
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Abstract
The utility model relates to a well sealing device of a confined water precipitation well, which comprises a steel pipe well pool, a water stop ring welded on the wall of the steel pipe well pool, an air bag positioned at the lower part of the water stop ring in the well, and a valve which is inflated through an air inlet pipe and clings to the well wall to fully seal the well pool and lock the gas in the air bag; the upper part of the air bag is poured with concrete which does not cover the water stop ring, and the surface of the concrete is coated with water stop paint. The confined water precipitation well that realizes through this scheme seals the well, adopts the gasbag shutoff, can shorten the well sealing cycle, and reduce cost reduces the process, overcomes the not enough of current confined water precipitation well shutoff technique.
Description
Technical Field
The utility model belongs to the technical field of the building engineering precipitation well shut-in, a confined water precipitation well shut-in device is related to.
Background
At present, large-scale buildings are increasingly common, and the application of deep foundation pits is common. The plugging of the confined water precipitation well in the deep foundation pit is also very critical, and has direct influence on the waterproofing of the engineering and the smooth proceeding of the subsequent construction procedures. At present, a common well sealing technology is that when foundation pit excavation is completed and bottom plate construction is carried out, a great amount of water is drained from a dewatering well, then, by utilizing the clearance time of water level rising, mixed dry materials such as cement, sand, broken stone and the like are filled into a confined water dewatering well, tamping is carried out while filling, and finally, a steel well cover is placed and welded with a well pipe.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of above-mentioned current confined water precipitation well shutoff technique, the utility model provides a confined water precipitation well shut-in. This confined water precipitation well shut-in adopts the gasbag shutoff, can shorten shut-in period, reduce cost reduces the process, and the scheme specifically is:
a confined water precipitation well shut-in device includes:
the device comprises a steel pipe well pool, a water stop ring welded on the wall of the steel pipe well pool, an air bag positioned at the lower part of the water stop ring in the well, a valve which can lock the gas in the air bag, and a valve which is inflated by an air inlet pipe and clings to the wall of the well to fully block the well pool; the upper part of the air bag is poured with concrete which does not cover the water stop ring, and the surface of the concrete is coated with water stop paint.
Further, the inlet duct above the valve may be trimmed after the valve is closed.
Further, the concrete is impervious concrete.
Further, the water-stop paint is a crystalline micro-expansion water-stop paint.
Further, the well mouth of the well sealing is sealed by high-grade unexpanded concrete.
The utility model has the advantages that: simple process, high efficiency, convenience, economy and practicality.
Drawings
Fig. 1 is an elevation view of the present invention;
FIG. 2 is a cross-sectional view of section A-A in FIG. 1.
Description of reference numerals: 1, an air inlet pipe; 2-a valve; 3-air bag; 4-high grade micro-expansive concrete; 5-crystalline micro-expansion water-stop paint; 6-impervious concrete; 7-a water stop ring; 8-a steel pipe; 9-confined water.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in figure 1, the well sealing device for the confined water dewatering well comprises a steel pipe 8 well basin, a water stop ring 7 welded on the wall 8 of the steel pipe well and playing a role of preventing confined water from seeping outwards, an air bag 3 positioned at the lower part of the water stop ring 7 in the well, wherein the air bag 3 is inflated through an air inlet pipe 1 and is tightly attached to the wall of the well, the well mouth is preliminarily sealed by utilizing the frictional resistance between the air bag and the wall of the steel pipe, a valve 2 capable of locking the air in the air bag 3 is arranged, and the air inlet pipe 1 at the upper part of the valve 2 can be cut; the upper part of the air bag 3 is poured with impervious concrete 6 which does not pass through the water stop ring 7, and the surface of the impervious concrete 6 is coated with a crystal micro-expansion water stop coating 5; and the well mouth of the well sealing is sealed by high-grade unexpanded concrete.
Example (b):
a confined water precipitation well shut-in device includes:
the device comprises a steel pipe 8 well pool, a water stop ring 7 welded on the wall 8 of the steel pipe well, an air bag 3 positioned at the lower part of the water stop ring 7 in the well, a valve 2 which can lock the air in the air bag 3, and a valve, wherein the air bag 3 is inflated through an air inlet pipe 1 and clings to the wall of the well to fully block the well pool; the upper part of the air bag 3 is poured with concrete 6 which does not cover the water stop ring 7, and the surface of the concrete 6 is coated with water stop paint 5.
Further, the inlet pipe 1 above the valve 2 may be trimmed after the valve 2 is closed.
Further, the concrete 6 is impervious concrete.
Further, the water-stop paint 5 is a crystalline micro-expansion water-stop paint.
Further, the well mouth of the well sealing is sealed by high-grade unexpanded concrete.
The utility model discloses a work progress is, at first draws water 9 to the water level stability in 8 well ponds of steel pipe. And a water stop ring 7 is welded on the well wall 8, then the air bag 3 is placed in the well, and the air bag 3 is inflated through the air inlet pipe 1 until the air bag is tightly attached to the well wall, so that the well pool is fully plugged. The valve 2 is closed to lock the gas in the air bag, and then the gas inlet pipe 1 at the upper part of the valve is cut off. And pouring impervious concrete 6 on the upper part of the air bag until the impervious concrete submerges the top surface 7 of the water stop ring, after the impervious concrete has certain strength, coating crystalline micro-expansion water stop paint 5 on the surface of the impervious concrete, and finally plugging the wellhead by using high-grade unexpanded concrete.
The utility model adopts the principle that: utilize the frictional resistance between gasbag and the steel pipe wall preliminarily to seal the well head, play the stagnant water effect on the one hand, on the other hand pours concrete for upper portion and provides supporting platform. And pouring concrete on the upper part of the air bag, welding a water stop ring, coating water stop paint and the like to further seal the wellhead of the confined water precipitation well and prevent confined water from leaking outwards.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (5)
1. The utility model provides a confined water precipitation well shut-in device which characterized in that includes:
the device comprises a steel pipe well pool, a water stop ring welded on the wall of the steel pipe well pool, an air bag positioned at the lower part of the water stop ring in the well, a valve which can lock the gas in the air bag, and a valve which is inflated by an air inlet pipe and clings to the wall of the well to fully block the well pool; the upper part of the air bag is poured with concrete which does not cover the water stop ring, and the surface of the concrete is coated with water stop paint.
2. The confined water dewatering well sealing device as claimed in claim 1, wherein: the inlet pipe above the valve can be cut off after the valve is closed.
3. The confined water dewatering well sealing device as claimed in claim 1, wherein: the concrete is impervious concrete.
4. The confined water dewatering well sealing device as claimed in claim 1, wherein: the water-stopping coating is a crystalline micro-expansion water-stopping coating.
5. The confined water dewatering well sealing device as claimed in claim 1, wherein: and the well mouth of the well sealing is sealed by high-grade unexpanded concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922157903.1U CN211849528U (en) | 2019-12-05 | 2019-12-05 | Confined water precipitation well shut-in device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922157903.1U CN211849528U (en) | 2019-12-05 | 2019-12-05 | Confined water precipitation well shut-in device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211849528U true CN211849528U (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201922157903.1U Active CN211849528U (en) | 2019-12-05 | 2019-12-05 | Confined water precipitation well shut-in device |
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| CN (1) | CN211849528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305245A (en) * | 2019-12-05 | 2020-06-19 | 中冶天工集团有限公司 | Confined water dewatering well sealing device and construction method |
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2019
- 2019-12-05 CN CN201922157903.1U patent/CN211849528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305245A (en) * | 2019-12-05 | 2020-06-19 | 中冶天工集团有限公司 | Confined water dewatering well sealing device and construction method |
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