CN212742598U - Precipitation well block structure - Google Patents
Precipitation well block structure Download PDFInfo
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- CN212742598U CN212742598U CN202021565546.9U CN202021565546U CN212742598U CN 212742598 U CN212742598 U CN 212742598U CN 202021565546 U CN202021565546 U CN 202021565546U CN 212742598 U CN212742598 U CN 212742598U
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- precipitation well
- bed course
- fixing ring
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Abstract
The utility model discloses a precipitation well block structure, including precipitation well, basic bed course and raft foundation layer and steel pipe, precipitation well head and basic bed course top surface parallel and level, raft foundation layer is on basic bed course, the steel pipe lower part is inserted and is established in the precipitation well, and raft foundation layer top surface is worn out on the steel pipe top, steel pipe inner wall upper portion is equipped with solid fixed ring, gu fixed ring upper portion is equipped with solid fixed ring's hole confined and the diameter is greater than solid fixed ring hole diameter's shrouding, steel pipe outer wall upper portion cover is equipped with the stagnant water pterygoid lamina, precipitation well bottom to with the steel pipe bottom between pack have the rank to join in marriage the grit, all pack about lieing in the shrouding. This plugging structure is through filling the graded grit and setting up the separated shrouding of physics in the steel pipe in the precipitation well, and the shutoff quality has been guaranteed to the mode that the downside all filled the micro-expansion concrete on the shrouding, and whole plugging device's installation is also simple, but workman's rapid operation, and construction cost is lower.
Description
Technical Field
The utility model belongs to the technical field of the construction, especially, relate to a precipitation well block structure.
Background
With the rapid advance of the urbanization process in China, the urban construction land is increasingly tense, and the tense condition of the urban construction land makes the building unit area larger and larger. Meanwhile, the construction of water collection and drainage in the foundation construction stage is more and more common, and the precipitation in the current construction stage is mostly carried out by adopting a well point construction method, so that the foundation pit excavation and the construction of a follow-up foundation are facilitated, but after a water pump in a precipitation well stops precipitation operation, due to the effect of groundwater pressure, if the water burst phenomenon can occur when the precipitation well plugging is not completed in a short time, and the plugging quality is not good, groundwater can permeate out, so that the water accumulation phenomenon is caused, and adverse effects are caused to later construction.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a precipitation well block structure, have the advantage that the shutoff quality is reliable, construction cost is low.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a precipitation well block structure, includes precipitation well, foundation bed course and raft foundation layer and steel pipe, precipitation well head and foundation bed course top surface parallel and level, raft foundation layer is on foundation bed course, the steel pipe lower part is inserted and is established in the precipitation well, and raft foundation layer top surface is worn out on the steel pipe top, steel pipe inner wall upper portion is equipped with solid fixed ring, gu fixed ring upper portion is equipped with solid fixed ring's hole confined and the diameter is greater than solid fixed ring hole diameter's shrouding, steel pipe outer wall upper portion cover is equipped with the stagnant water pterygoid lamina, and the stagnant water pterygoid lamina is located raft foundation layer, precipitation well bottom to with the steel pipe bottom between pack have the rank join in marriage the grit.
As optimization, a plurality of screw thread blind holes are arranged at intervals along the circumferential direction on the fixing ring, a plurality of screw thread through holes corresponding to the screw thread blind holes one to one are arranged on the sealing plate along the circumferential direction, and the sealing plate is in threaded connection with the fixing ring in a mode of screwing the bolt into the screw thread through holes and the screw thread blind holes.
Preferably, the fixing ring is provided with an annular groove on the inner side of each threaded blind hole, and a sealing ring is arranged in the annular groove.
As an optimization, the outer wall of the steel pipe is further sleeved with a water stop flange, the bottom end face of the water stop flange abuts against the upper surface of the foundation mat layer to block a gap between the steel pipe and the precipitation well, the outer surface of the water stop flange is further wrapped with a waterproof roll material layer, and the waterproof roll material layer is rolled up along the pipe wall of the steel pipe to be connected with the water stop wing plate.
Preferably, the steel pipe is a hot-rolled seamless steel pipe.
And optimally, the thickness of the foundation bed course is 100-120 mm, and the thickness of the raft foundation layer is 500-600 mm.
Compared with the prior art, the utility model following beneficial effect has: this plugging structure is through filling the graded grit and setting up the separated shrouding of physics in the steel pipe in the precipitation well, the shutoff quality has been guaranteed to the mode that the downside all filled the micro-expansion concrete on the shrouding, make groundwater be difficult to permeate the earth's surface from the precipitation well in, and set up the stagnant water pterygoid lamina outside the steel pipe, prevent that groundwater from outwards permeating along the steel pipe outer wall, it is reliable further to have guaranteed the shutoff quality, and because steel pipe and shrouding all can be prefabricated off-site, whole plugging device's installation is also simple, but workman fast operation, construction cost is lower.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the specific implementation: referring to fig. 1, a precipitation well plugging structure, includes precipitation well 1, foundation bed course 2 and raft foundation 3 and steel pipe 4, precipitation well head and foundation bed course top surface parallel and level, raft foundation bed level is on the foundation bed course, the steel pipe lower part is inserted and is established in the precipitation well, and the steel pipe top is worn out in raft foundation bed top surface, steel pipe inner wall upper portion is equipped with solid fixed ring 5, gu fixed ring upper portion is equipped with solid fixed ring's hole confined and the diameter is greater than solid fixed ring hole diameter's shrouding 6, steel pipe outer wall upper portion cover is equipped with stagnant water pterygoid lamina 7, stagnant water pterygoid lamina is located raft foundation bed, precipitation well bottom to with the steel pipe bottom between fill with the graded grit 8, lie in the steel pipe in the shrouding.
This plugging structure is through filling the graded grit and setting up the separated shrouding of physics in the steel pipe in the precipitation well, the shutoff quality has been guaranteed to the mode that the downside all filled the micro-expansion concrete on the shrouding, make groundwater be difficult to permeate the earth's surface from the precipitation well in, and set up the stagnant water pterygoid lamina outside the steel pipe, prevent that groundwater from outwards permeating along the steel pipe outer wall, it is reliable further to have guaranteed the shutoff quality, and because steel pipe and shrouding all can be prefabricated off-site, whole plugging device's installation is also simple, but workman fast operation, construction cost is lower.
As optimization, a plurality of screw thread blind holes are arranged at intervals along the circumferential direction on the fixing ring, screw thread through holes corresponding to the screw thread blind holes in position one to one are arranged on the sealing plate along the circumferential direction, and the sealing plate is in threaded connection with the fixing ring in a mode that the bolt 10 is screwed into the screw thread through holes and the screw thread blind holes.
Therefore, through the nut blind hole and the threaded through hole, the sealing plate and the fixing ring are convenient to thread, the bolt cannot penetrate through the fixing ring below the fixing ring, a new notch is formed, and underground water is prevented from permeating out along the bolt. The fixing ring can be welded on the inner wall of the steel pipe in advance, and the sealing plate and other micro-expansion concrete at the lower part of the steel pipe are in threaded connection with the fixing ring after pouring is finished.
Preferably, the fixing ring is provided with an annular groove on the inner side of each threaded blind hole, and a sealing ring is arranged in the annular groove.
Therefore, the sealing ring is arranged to complete the permeation of isolated underground water from the gap between the sealing plate and the fixing ring, and the plugging effect is improved.
As optimization, the outer wall of the steel pipe is further sleeved with a water stop flange 11, the bottom end face of the water stop flange abuts against the upper surface of the foundation mat layer to block a gap between the steel pipe and the precipitation well, the outer surface of the water stop flange is further wrapped with a waterproof roll material layer, and the waterproof roll material layer is rolled up along the pipe wall of the steel pipe to be connected with a water stop wing plate.
Therefore, when the steel pipe is inserted into the dewatering well, the steel pipe cannot be completely screwed and jointed, a gap always exists, the outer wall of the steel pipe is sleeved with the water stopping flange, the gap is blocked by the water stopping flange, and the waterproof treatment is carried out through the waterproof coiled material layer, so that the permeation of underground water from the gap is thoroughly isolated, and the plugging quality is improved.
Preferably, the steel pipe is a hot-rolled seamless steel pipe. The thickness of the foundation bed course is 100-120 mm, and the thickness of the raft foundation layer is 500-600 mm.
During construction, dig the foundation trench to the bottom of a pit earlier, insert prefabricated steel pipe in the precipitation well that no sand pipe formed, the raft foundation top surface that the mouth is higher than the design on the pipe is 50mm, in order to strengthen the shutoff quality, can weld about the steel pipe outer wall and set up twice stagnant water pterygoid lamina, the last water pterygoid lamina of saying is 150mm apart from the steel pipe mouth, and twice stagnant water pterygoid lamina interval 250mm, the steel pipe end opening stretches into 1m in the precipitation well from the basic bed course top surface. After the foundation bed course construction is finished, waterproof coiled materials are arranged at the water stop flanges, the waterproof coiled materials are coiled on the lower water stop wing plates to be connected, and then concrete pouring of the raft foundation bed course is carried out. When the dewatering well is plugged, the dewatering well is filled with graded sandstone until the dewatering well is connected with the lower opening of the steel pipe, then the lower side of the steel pipe sealing plate is filled with micro-expansion concrete with the C40 label, the sealing plate is screwed on the fixing ring, and the micro-expansion concrete with the C40 label is continuously filled above the sealing plate until the pipe opening is reached, so that the plugging operation is completed.
While embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents, and thus the embodiments of the invention are intended only as illustrative examples of the invention and no matter how the embodiments of the invention may be seen in any way limit the scope of the invention.
Claims (6)
1. The utility model provides a precipitation well block structure, includes precipitation well, foundation bed course and raft foundation layer and steel pipe, precipitation well head and foundation bed course top surface parallel and level, raft foundation layer is on foundation bed course, its characterized in that: the lower portion of the steel pipe is inserted into the precipitation well, the top end of the steel pipe penetrates out of the top surface of the raft foundation layer, the upper portion of the inner wall of the steel pipe is provided with a fixing ring, the upper portion of the fixing ring is provided with a sealing plate which seals an inner hole of the fixing ring and is larger than the diameter of the inner hole of the fixing ring, the upper portion of the outer wall of the steel pipe is sleeved with a water stop wing plate, the water stop wing plate is located in the raft foundation layer, graded gravel is filled between the bottom of the precipitation well and the bottom end of.
2. The dewatering well plugging structure according to claim 1, wherein: the fixing ring is provided with a plurality of threaded blind holes at intervals along the circumferential direction, the sealing plate is provided with a plurality of threaded through holes in one-to-one correspondence with the threaded blind holes along the circumferential direction, and the sealing plate is in threaded connection with the fixing ring in a mode of screwing the bolt into the threaded through holes and the threaded blind holes.
3. The dewatering well plugging structure according to claim 2, wherein: an annular groove is formed in the fixing ring and located on the inner side of each threaded blind hole, and a sealing ring is arranged in the annular groove.
4. The dewatering well plugging structure according to claim 1, wherein: the outer wall of the steel pipe is further sleeved with a water stopping flange, the bottom end face of the water stopping flange is abutted against the upper surface of the foundation bed course to block a gap between the steel pipe and the dewatering well, the outer surface of the water stopping flange is further wrapped with a waterproof roll material layer, and the waterproof roll material layer is rolled up along the pipe wall of the steel pipe to be connected with the water stopping wing plate.
5. The dewatering well plugging structure according to claim 1, wherein: the steel pipe is a hot-rolled seamless steel pipe.
6. The dewatering well plugging structure according to claim 1, wherein: the thickness of the foundation bed course is 100-120 mm, and the thickness of the raft foundation layer is 500-600 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021565546.9U CN212742598U (en) | 2020-07-31 | 2020-07-31 | Precipitation well block structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021565546.9U CN212742598U (en) | 2020-07-31 | 2020-07-31 | Precipitation well block structure |
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| Publication Number | Publication Date |
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| CN212742598U true CN212742598U (en) | 2021-03-19 |
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| CN202021565546.9U Active CN212742598U (en) | 2020-07-31 | 2020-07-31 | Precipitation well block structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115977126A (en) * | 2023-02-03 | 2023-04-18 | 中建八局天津建设工程有限公司 | The plugging structure and construction method of the dewatering well in the sump pit of the foundation floor |
-
2020
- 2020-07-31 CN CN202021565546.9U patent/CN212742598U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115977126A (en) * | 2023-02-03 | 2023-04-18 | 中建八局天津建设工程有限公司 | The plugging structure and construction method of the dewatering well in the sump pit of the foundation floor |
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