CN214497558U - Foundation pit dewatering well wellhead plugging casing pipe and structure - Google Patents
Foundation pit dewatering well wellhead plugging casing pipe and structure Download PDFInfo
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- CN214497558U CN214497558U CN202022719939.7U CN202022719939U CN214497558U CN 214497558 U CN214497558 U CN 214497558U CN 202022719939 U CN202022719939 U CN 202022719939U CN 214497558 U CN214497558 U CN 214497558U
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Abstract
The utility model provides a foundation ditch precipitation well seals sleeve pipe and structure. The plugging sleeve comprises a steel sleeve and a flange cover plate, a first water stop ring plate and a second water stop ring plate are mounted on the outer pipe wall of the steel sleeve, the first water stop ring plate is arranged at a position close to the lower end opening of the steel sleeve, and the second water stop ring is arranged at a position above the middle of the steel sleeve; an annular flange plate is arranged on the inner wall of the steel sleeve close to the pipe orifice, and the flange cover plate is arranged above the annular flange plate; the steel sleeve of the plugging sleeve is sleeved at the pipe orifice of the well pipe, the pipe orifice of the well pipe is lower than the flange cover plate, a first plugging layer is arranged below the flange cover plate, and a second plugging layer is arranged above the flange cover plate. The utility model discloses a sleeve pipe is equipped with twice seal ring to position below the intraductal pipe orifice of sleeve pipe is equipped with the flange joint apron, and after the flange joint apron installation, can continue to fill the micro-expansion concrete more than the flange joint apron, has improved stagnant water shutoff effect greatly.
Description
Technical Field
The utility model relates to a construction underground waterproof construction, in particular to foundation ditch precipitation well seals sleeve pipe and structure.
Background
Along with the continuous development of the society, underground works are more and more, and when underground works are constructed, the problem of underground water is often encountered, especially when underground water is blocked in a section, the underground water level is high, the depth is large, and open water in a foundation pit cannot be constructed, so that a precipitation well needs to be constructed in the foundation pit for precipitation. After the main engineering construction is completed, the dewatering well needs to be plugged.
The traditional well sealing and dewatering method mainly comprises two modes of filling the well by using dry cement and bare stone and filling the well by using concrete dry materials. The well sealing effect of the existing well sealing mode is not good, the water pressure of a dewatering well is large, the water level rises very fast, and once the well sealing fails, the underground water injection phenomenon is easy to cause. In addition, also have the mode that uses the sleeve pipe to seal the well among the current well sealing structure, but current sleeve pipe well sealing structure generally only has one seal ring, seals the board moreover and all sets up in the orificial position of sleeve pipe to it is relatively poor to lead to its stagnant water effect, if seals well stagnant water effect not good causes the structure bottom plate very easily and the phenomenon of leaking appears.
Disclosure of Invention
The utility model provides a not enough according to prior art provides an effectual foundation ditch precipitation well head shutoff sleeve pipe of stagnant water and structure, this shutoff sleeve pipe simple structure, simple to operate adopt multichannel stagnant water structure to combine concrete shutoff structure to improve the shutoff effect greatly, reduced the risk of secondary seepage.
In order to achieve the technical purpose, the utility model provides a well mouth plugging sleeve for a foundation pit dewatering well, which comprises a steel sleeve and a flange cover plate, wherein the outer wall of the steel sleeve is provided with a first water-stopping ring plate and a second water-stopping ring plate; an annular flange plate is arranged at a position, close to the pipe orifice, of 15-25 cm on the inner wall of the steel sleeve, the flange cover plate is arranged above the annular flange plate, and a sealing rubber ring is arranged between the flange cover plate and the annular flange plate.
The utility model discloses better technique: the first water stop ring plate and the second water stop ring plate are both annular steel plates and are welded on the outer pipe wall of the steel sleeve; the annular flange plate is welded on the inner pipe wall of the steel sleeve.
The utility model discloses better technique: the upper surface of the annular flange plate is provided with an annular groove, and the sealing rubber ring is fixedly arranged in the annular groove on the upper surface of the flange cover plate.
The utility model discloses better technique: the distance between the upper surface of the flange cover plate and the pipe orifice of the sleeve pipe is 20 cm.
In order to achieve the technical purpose, the utility model also provides a foundation ditch precipitation well head block structure, its characterized in that: the plugging structure comprises the foundation pit dewatering well wellhead plugging sleeve of the structure, the steel sleeve pipe sleeve of the plugging sleeve pipe is arranged at the pipe opening of the well casing, the pipe opening of the well casing is lower than the flange cover plate, a first plugging layer is arranged below the flange cover plate, a second plugging layer is arranged above the flange cover plate, the first plugging layer extends to the lower surface of the flange cover plate from the well casing, and the second plugging layer is parallel and level to the pipe opening of the steel sleeve pipe.
The utility model discloses better technique: the first water stop ring plate of the steel sleeve is arranged below the bottom surface of the foundation pit and is blocked by a third blocking layer, the bottom surface of the third blocking layer is flush with the bottom surface of the structural bottom plate, and the second water stop ring plate is arranged in the structural bottom plate.
The utility model has the advantages that:
(1) the sleeve of the utility model is provided with two water stop rings, wherein one water stop ring is arranged below the bottom plate in the installation process and is fixedly sealed through concrete, the other water stop ring is arranged in the structural bottom plate, and the two water stop rings are combined with the installation structure, so that the water stop effect is greatly improved;
(2) the utility model discloses position below the intraductal pipe orifice of sleeve pipe is equipped with the flange joint apron, and after the flange joint apron installation, can continue to fill micro-expansion concrete more than the flange joint apron, increase the shutoff effect of sealing the board.
Drawings
Fig. 1 is a schematic structural view of the plugging sleeve of the present invention;
FIG. 2 is a schematic cross-sectional view AA' of FIG. 1;
fig. 3 is a schematic structural diagram of the middle plugging structure of the present invention.
In the figure: the sealing structure comprises 1-a steel sleeve, 2-a flange cover plate, 3-a first water stop ring plate, 4-a second water stop ring plate, 5-an annular flange plate, 6-a sealing rubber ring, 7-a well pipe, 8-a first plugging layer, 9-a second plugging layer, 10-a third plugging layer and 11-a structural bottom plate.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 3 are drawings of the embodiment, which are drawn in a simplified manner and are only used for clearly and concisely illustrating the purpose of the embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
The first plugging sleeve for the wellhead of the foundation pit dewatering well comprises a steel sleeve 1 and a flange cover plate 2, wherein a first water stop ring plate 3 and a second water stop ring plate 4 are mounted on the outer pipe wall of the steel sleeve 1, the first water stop ring plate 3 and the second water stop ring plate 4 are both annular steel plates and are welded on the outer pipe wall of the steel sleeve 1, the first water stop ring plate 3 is arranged at a position close to the lower port of the steel sleeve 1, and the second water stop ring plate 4 is arranged at a position above the middle of the steel sleeve 1; an annular flange plate 5 is arranged at a position, 20cm close to the pipe orifice, of the inner wall of the steel sleeve 1, the flange cover plate 2 is installed above the annular flange plate 5, and a sealing rubber ring 6 is arranged between the flange cover plate 2 and the annular flange plate 5. An annular flange plate 5 is welded to the inner pipe wall of the steel casing 1. An annular groove is formed in the upper surface of the annular flange plate 5, and the sealing rubber ring 6 is fixedly installed in the annular groove in the upper surface of the flange cover plate 2.
The second embodiment provides a well head plugging structure of foundation pit dewatering well, as shown in fig. 3, the plugging structure includes the well head plugging sleeve of foundation pit dewatering well of the first embodiment, steel casing 1 cover is established at the mouth of pipe of well casing 7, and the mouth of pipe of well casing 7 is less than flange apron 2, is equipped with first shutoff layer 8 below flange apron 2, is equipped with second shutoff layer 9 above flange apron 2, first shutoff layer 8 extends to the lower surface of flange apron 2 from in the well casing 7, second shutoff layer 9 and steel casing 1's mouth parallel and level. The first water stop ring plate 3 of the steel sleeve 1 is arranged below the bottom surface of the foundation pit and is blocked by a third blocking layer 10, the bottom surface of the third blocking layer 10 is flush with the bottom surface of the structural bottom plate 11, and the second water stop ring plate 4 is arranged in the structural bottom plate 11.
The utility model discloses a work progress as follows: excavating the bottom of a foundation pit, cutting a well pipe 7 of a precipitation well, arranging the well pipe 7 above a base, excavating soil around the well pipe 7, then installing a steel sleeve 1 for plugging the sleeve in the utility model above the precipitation well, welding the periphery with the well pipe 7, pouring concrete until the bottom surface of the foundation pit is level to form a third plugging layer 10, when constructing a main structure of a station (the precipitation well is still precipitating at the moment), after the construction of the main structure of the station is completed, meeting the requirement of strength, stabilizing precipitation and starting to seal the well, after the construction of the main structure of the station is completed, arranging a second water-stopping annular plate 4 of the steel sleeve 1 in a structural bottom plate 11, then lifting a water pump out of the precipitation well, pouring concrete in the well to form a first plugging layer 8 at the position of an annular flange plate 5, connecting the flange cover plate 2 with the annular flange plate 5 through a flange bolt, and sealing the annular flange cover plate 5 by a rubber ring, and finally, pouring micro-expansion concrete from the position above the flange cover plate 2 to the pipe orifice of the steel sleeve 1 to form a second plugging layer 9, and closing the surface.
The above description is only one embodiment of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (3)
1. The utility model provides a foundation ditch precipitation well head block structure which characterized in that: the plugging structure comprises a plugging sleeve and a well pipe (7), the plugging sleeve comprises a steel sleeve (1) and a flange cover plate (2), a first water stop ring plate (3) and a second water stop ring plate (4) are mounted on the outer pipe wall of the steel sleeve (1), the first water stop ring plate (3) is arranged at a position close to the lower end opening of the steel sleeve (1), and the second water stop ring plate (4) is arranged at a position above the middle of the steel sleeve (1); an annular flange plate (5) is arranged at a position, 15-25 cm away from a pipe orifice, on the inner wall of the steel sleeve (1), the flange cover plate (2) is arranged above the annular flange plate (5), a sealing rubber ring (6) is arranged between the flange cover plate (2) and the annular flange plate (5), an annular groove is formed in the upper surface of the annular flange plate (5), and the sealing rubber ring (6) is fixedly arranged in the annular groove in the upper surface of the flange cover plate (2); the mouth of pipe of well casing (7) is established to steel casing pipe (1) cover, and the mouth of pipe of well casing (7) is less than flange apron (2), below foundation ditch bottom surface is arranged in first stagnant water ring board (3) of steel casing pipe (1) to through third shutoff layer (10) shutoff, the top surface of third shutoff layer (10) and the bottom surface parallel and level of structure bottom plate (11), structure bottom plate (11) are arranged in second stagnant water ring board (4), are equipped with first shutoff layer (8) in the below of flange apron (2), are equipped with second shutoff layer (9) above flange apron (2), first shutoff layer (8) extend to the lower surface of flange apron (2) from well casing (7), second shutoff layer (9) and the mouth of pipe parallel and level of steel casing pipe (1).
2. The foundation pit dewatering well wellhead plugging structure as claimed in claim 1, wherein: the first water stop ring plate (3) and the second water stop ring plate (4) are both annular steel plates and are welded on the outer pipe wall of the steel sleeve (1); the annular flange plate (5) is welded on the inner pipe wall of the steel sleeve (1).
3. The foundation pit dewatering well wellhead plugging structure as claimed in claim 1, wherein: the distance between the upper surface of the flange cover plate (2) and the pipe orifice of the sleeve pipe is 20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022719939.7U CN214497558U (en) | 2020-11-20 | 2020-11-20 | Foundation pit dewatering well wellhead plugging casing pipe and structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022719939.7U CN214497558U (en) | 2020-11-20 | 2020-11-20 | Foundation pit dewatering well wellhead plugging casing pipe and structure |
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|---|---|
| CN214497558U true CN214497558U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022719939.7U Active CN214497558U (en) | 2020-11-20 | 2020-11-20 | Foundation pit dewatering well wellhead plugging casing pipe and structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897991A (en) * | 2021-11-08 | 2022-01-07 | 安徽水利开发有限公司 | Plugging device for dewatering well steel cover plate and construction method thereof |
| CN114182746A (en) * | 2021-12-22 | 2022-03-15 | 北京建工集团有限责任公司 | Self-plugging device for dewatering well and installation method thereof |
| CN114482105A (en) * | 2022-03-18 | 2022-05-13 | 中铁一局集团有限公司 | Construction method for plugging dewatering well group with strong pressure water after ultra-deep subway station is sealed |
-
2020
- 2020-11-20 CN CN202022719939.7U patent/CN214497558U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897991A (en) * | 2021-11-08 | 2022-01-07 | 安徽水利开发有限公司 | Plugging device for dewatering well steel cover plate and construction method thereof |
| CN114182746A (en) * | 2021-12-22 | 2022-03-15 | 北京建工集团有限责任公司 | Self-plugging device for dewatering well and installation method thereof |
| CN114482105A (en) * | 2022-03-18 | 2022-05-13 | 中铁一局集团有限公司 | Construction method for plugging dewatering well group with strong pressure water after ultra-deep subway station is sealed |
| CN114482105B (en) * | 2022-03-18 | 2024-04-16 | 中铁一局集团有限公司 | Precipitation well group plugging construction method with strong pressurized water after ultra-deep subway station is closed |
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