CN210712891U - Underground engineering deep well precipitation wellhead plugging structure - Google Patents
Underground engineering deep well precipitation wellhead plugging structure Download PDFInfo
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- CN210712891U CN210712891U CN201921039240.7U CN201921039240U CN210712891U CN 210712891 U CN210712891 U CN 210712891U CN 201921039240 U CN201921039240 U CN 201921039240U CN 210712891 U CN210712891 U CN 210712891U
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- 238000001556 precipitation Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 110
- 239000010959 steel Substances 0.000 claims abstract description 110
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000010276 construction Methods 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000008093 supporting effect Effects 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 230000001976 improved effect Effects 0.000 abstract description 12
- 239000003673 groundwater Substances 0.000 description 9
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a deep well precipitation well head shutoff structure of underground works relates to the technical field of construction. The waterproof board is integrally formed on the upper end surface of the foundation pit leveling layer and the periphery of the well, a water-stopping putty layer is fixed on one side of the waterproof board, which is far away from the foundation pit leveling layer, and a concrete layer is fixed on one side of the water-stopping putty layer, which is far away from the waterproof board; the upper end face of the well is fixed with a sealing steel plate, the lower end face of the sealing steel plate is fixed with a rubber layer which is abutted against the inner wall of the well, and the upper end face of the sealing steel plate is fixed with an expansion layer which is bonded with a concrete layer. The sealing steel plate is added with the sealing performance between the shaft through the rubber layer, and the waterproof performance of the shaft upper end face plugging part is improved. And the waterproof board and the waterproof putty layer are directly used for preventing water on the peripheral side of the well, so that the permeation of underground water into the well can be effectively reduced, the well settlement is avoided, and the quality of a foundation pit is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of the technique of construction and specifically relates to a deep well precipitation well head shutoff structure of underground works.
Background
Along with the increase of high-rise buildings, deep foundation pit construction also often meets, and during foundation pit excavation, groundwater level is higher than excavation ground, and groundwater can constantly go deep into in the hole, in order to guarantee that the foundation pit can be under the construction of dry condition, prevents that slope unstability, basic flowing sand, hole bottom uplift, hole bottom piping and foundation bearing capacity from descending and need do the foundation pit dewatering work. The main dewatering methods include open ditch dewatering with water collecting well, light well point dewatering, jet well point dewatering, electroosmosis well point dewatering, deep well point dewatering, etc. The deep well point is a dewatering method applied in foundation pit support, and has the advantages of large displacement, large dewatering depth, large dewatering range and the like. After the precipitation of the foundation pit meets the requirement, the precipitation well needs to be plugged in time, the construction safety is ensured,
the existing plugging method of the dewatering well comprises the following steps: firstly, filling dry gravel materials into the dewatering well, filling the dry gravel materials to the bottom of the foundation cushion, then pouring waterproof concrete into the pre-embedded waterproof steel sleeve, and welding and plugging the upper port of the waterproof steel sleeve by using a flange cover. The plugging method has the defect of poor sealing property, and the water seepage phenomenon can occur on the raft concrete foundation layer. The reason is that: after the waterproof concrete in the waterproof steel sleeve solidifies, can take place the shrink, make and form the gap between waterproof steel sleeve's inner wall and the waterproof concrete, after precipitation well water level rises again, can ooze from this gap, enter into raft upper portion, ponding still can appear when serious, has seriously influenced high-rise building's safe handling.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an underground works deep well precipitation well head shutoff structure, its advantage: the sealing performance between the sealing steel plate and the well is improved, underground water is guided to move towards the center far away from the well, and the sealing and waterproof performance is greatly improved.
The utility model discloses a can realize through following technical scheme:
the underground engineering deep well dewatering wellhead plugging structure comprises a foundation pit layer and a well embedded in the foundation pit layer, wherein gravels are filled in the well, a foundation pit leveling layer is fixed on the upper end surface of the foundation pit layer on the periphery of the well, a waterproof board is integrally formed on the upper end surface of the foundation pit leveling layer and the periphery of the well, a water-stopping putty layer is fixed on one side of the waterproof board far away from the foundation pit leveling layer and one side of the waterproof board far away from the well, and a concrete layer is fixed on one side of the water-stopping putty layer far away from the waterproof board;
the upper end face of the well is fixed with a sealing steel plate, the lower end face of the sealing steel plate is fixed with a rubber layer which is abutted against the inner wall of the well in the center, and the upper end face of the sealing steel plate is fixed with an expansion layer which is bonded with the concrete layer.
Through adopting above-mentioned technical scheme, sealed steel sheet fixes the up end back at the well, and the leakproofness between sealed steel sheet and the well has been increased at the inner wall of well in rubber layer butt simultaneously to the waterproof performance of well up end shutoff department has been improved. And the well periphery side is directly subjected to waterproof operation through the waterproof board and the water stopping putty layer, the overall waterproof performance of the well wall is improved after the waterproof board and the water stopping putty layer are matched, the permeation of underground water into the well can be effectively reduced after plugging, the well settlement can be effectively avoided, and the quality of a foundation pit is guaranteed.
Further setting the following steps: the one end of well is provided with first inclined plane in the up end, first inclined plane is close to the one end of well is higher than keeps away from the one end of well.
Through adopting above-mentioned technical scheme, first inclined plane makes the well week side's groundwater to keeping away from the well direction motion, reduces the infiltration to in the well to the waterproof performance of well lateral wall has been improved.
Further setting the following steps: the week side cover of well is equipped with the steel pipe, the one end of steel pipe extends to in the foundation ditch screed-coat, the other end extend and the butt extremely the lower terminal surface of sealed steel sheet, the waterproof board with stagnant water putty layer is all fixed on the periphery lateral wall of steel pipe.
Through adopting above-mentioned technical scheme, sealed steel sheet receives the support of steel pipe can be more stable, can effectively resist the emergence of subsiding the phenomenon after the atress intensity of sealed steel sheet increases.
Further setting the following steps: the periphery of steel pipe is located to be close to the welding of up end department and has a supporting steel plate, the supporting steel plate butt is in the lower terminal surface of sealed steel sheet.
By adopting the technical scheme, the supporting steel plate supports the sealing steel plate, the stress strength of the sealing steel plate is enhanced, and the phenomenon of settlement of the periphery of the sealing steel plate can be further reduced after plugging is finished.
Further setting the following steps: the week side of sealed steel sheet is provided with the second inclined plane, the second inclined plane is close to the one end of sealed steel sheet center department is higher than keeping away from the one end of sealed steel sheet center department.
Through adopting above-mentioned technical scheme, the second inclined plane makes groundwater to keeping away from the direction motion of sealed steel sheet center department to can effectively avoid groundwater to the well center infiltration.
Further setting the following steps: and waterproof layers are fixed on the second inclined plane and the upper end surface of the support steel plate.
Through adopting above-mentioned technical scheme, the waterproof layer had both carried out the shutoff with the clearance between sealing steel plate and the supporting steel board, had still improved the waterproof performance of the two simultaneously, can effectively avoid groundwater to go deep into the well from the gap between the two.
Further setting the following steps: and a plurality of triangular rib plates are fixed between the lower end surface of the supporting steel plate and the outer wall of the steel pipe.
Through adopting above-mentioned technical scheme, the triangle floor has strengthened the structural rigidity between supporting steel plate and the steel pipe to make supporting steel plate can support sealed steel plate more stably, further reduce the emergence of sealed steel plate week side settlement phenomenon.
Further setting the following steps: and a sand particle layer is fixed between the foundation pit layer and the foundation pit leveling layer.
Through adopting above-mentioned technical scheme, the sand grain layer is convenient for the groundwater of well week side to infiltration in the deeper foundation of land, reduces the accumulation in well week side, is favorable to reducing the water content of well week side.
To sum up, the utility model discloses a beneficial technological effect does:
1. the sealing performance between the sealing steel plate and the well is improved through the rubber layer, drainage is carried out through the second inclined plane, and water is prevented through the waterproof layer, so that the performance of the sealing steel plate is greatly improved, underground water can be effectively prevented from permeating into the well, sinking is reduced, and the structural strength of the foundation is guaranteed;
2. the waterproof board and the water-stopping putty layer enhance the waterproof performance of the side wall of the well, and further reduce the permeation of underground water into the well;
3. the supporting steel plate and the triangular rib plate enhance the stress strength of the sealing steel plate and can reduce the settlement phenomenon of the periphery of the sealing steel plate.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Reference numerals: 1. a hoistway; 2. leveling a foundation pit; 3. a waterproof sheet; 4. stopping a putty layer; 5. a concrete layer; 6. sealing the steel plate; 7. a rubber layer; 8. an intumescent layer; 9. a first inclined plane; 10. a steel pipe; 11. a support steel plate; 12. a second inclined plane; 13. a waterproof layer; 14. triangular rib plates; 15. and (4) a sand particle layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the deep well precipitation well head shutoff structure of underground works that this embodiment discloses, including the foundation ditch layer with inlay well 1 of establishing in the foundation ditch layer, well 1 intussuseption is filled and is tamped there is the grit, and the up end of foundation ditch layer has laid sand grain layer 15 in well 1's week side, and the foundation ditch screed-coat 2 has been laid in well 1's week side to the up end of sand grain layer 15. After the foundation pit leveling layer 2 is laid, the upper end surface of the well 1 is still higher than the upper end surface of the foundation pit leveling layer 2.
Referring to fig. 1 and 2, a steel pipe 10 is sleeved on the periphery of the hoistway 1, and the inner diameter of the steel pipe 10 is equal to the outer diameter of the hoistway 1, so that the steel pipe 10 can be tightly sleeved on the periphery of the hoistway 1. The upper end face welded fastening of well 1 has cylindric sealed steel sheet 6, and the lower terminal surface of sealed steel sheet 6 is fixed with the rubber layer 7 of butt at well 1 inner wall, and the diameter of rubber layer 7 slightly is greater than well 1's internal diameter for rubber layer 7 can receive the extrusion when entering into well 1, thereby improves the leakproofness between well 1 and the sealed steel sheet 6, can effectively avoid groundwater infiltration to enter into well 1. The periphery of the sealing steel plate 6 is provided with a second inclined plane 12, and one end of the second inclined plane 12 close to the center of the sealing steel plate 6 is higher than one end far away from the center of the sealing steel plate 6, so that underground water on the upper end surface of the sealing steel plate 6 can permeate and flow in the direction far away from the axis of the hoistway 1, and can be prevented from entering the hoistway 1 as far as possible.
Referring to fig. 1 and 2, the upper end surface of the steel pipe 10 abuts against the lower end surface of the sealing steel plate 6, the lower end surface of the steel pipe 10 is inserted into the leveling layer of the foundation, and the steel pipe 10 is welded and fixed by the leveling layer of the foundation and the sealing steel plate 6. The supporting steel plates 11 are horizontally welded on the periphery of the steel pipe 10 close to the upper end face, the supporting steel plates 11 are annular, a plurality of triangular rib plates 14 are fixed between the lower end face and the side wall of the steel pipe 10, and the four triangular rib plates 14 are arranged around the peripheral side wall of the steel pipe 10 in a circumferential array. The triangular rib plate 14 reinforces the connection strength between the support steel plate 11 and the steel pipe 10, thereby reinforcing the structural strength of the hoistway 1 at the sealing portion.
Referring to fig. 1 and 2, the waterproof layer 13 is fixed on both the upper end surface of the support steel plate 11 and the second inclined surface 12, and the waterproof layer 13 is formed by water-stopping putty coated on the upper end surface of the support steel plate 11 and the second inclined surface 12. The waterproof layer 13 formed by the water stopping putty further improves the waterproof performance of the sealing steel plate 6 and the sealing performance between the sealing steel plate 6 and the connecting steel plate.
Referring to fig. 1 and 2, a waterproof board 3 is integrally formed on the upper end surface of the foundation pit leveling layer 2 and the periphery of the hoistway 1, the section of the waterproof board 3 is L-shaped, the waterproof board 3 wraps the periphery of the hoistway 1 after winding the periphery of the hoistway 1 for one circle, and the waterproof board 3 close to the periphery of the hoistway 1 is fixed on the outer wall of the steel pipe 10. One side of the waterproof board 3, which is far away from the foundation pit leveling layer 2 and the well 1, is fixed with a water-stopping putty layer 4, and the water-stopping putty layer 4 is formed by painting water-stopping putty on the surface of the waterproof board 3. Stagnant water putty layer 4 is higher than the setting of waterproof board 3, and the part of rising is fixed on the outer wall of steel pipe 10, and one end of stagnant water putty layer 4 butt on the outer wall of steel pipe 10 is provided with first inclined plane 9 in the up end, and first inclined plane 9 is higher than the one end of keeping away from steel pipe 10 near the one end of steel pipe 10, is favorable to with the groundwater of steel pipe 10 week side to the direction drainage of keeping away from 1 axis of well, reduces the infiltration to well 1, has good water-proof effects.
Referring to fig. 1, an expansion layer 8 is laid on the upper end surface of the sealing steel plate 6, and is formed by casting expansion concrete, and the casting area is larger than the horizontal sectional area of the sealing steel plate 6. Concrete layers 5 are laid on the periphery of the expansion layer 8 on the upper end face of the foundation leveling layer, are formed by pouring common concrete, and finally seal the upper end face of the whole hoistway 1.
The implementation principle and the beneficial effects of the embodiment are as follows:
carry out the shutoff through welding sealed steel sheet 6 at the up end of well 1 to guarantee sealed steel sheet 6's stress strength through supporting steel plate 11 and steel pipe 10, make the ground that forms behind the shutoff harder and more solid, be difficult to collapse, the construction of the building of the top of being convenient for. And the waterproof performance of the plugging part is improved through the waterproof layer 13 between the sealing steel plate 6 and the supporting steel plate 11, the sealing performance of the plugging part is improved through the rubber layer 7, meanwhile, the waterproof plate 3 is wrapped on the periphery of the well 1 and the waterproof putty layer 4 is coated, the waterproof performance of the plugging structure is greatly improved, and the phenomenon that the well 1 sinks due to the fact that underground water in the concrete layer 5 permeates into the well 1 can be effectively avoided.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. Underground works deep well precipitation well head shutoff structure includes foundation ditch layer and inlays well (1) of establishing in the foundation ditch layer, its characterized in that: gravel is filled in the well (1), a foundation pit leveling layer (2) is fixed on the upper end surface of the foundation pit layer at the peripheral side of the well (1), waterproof boards (3) are integrally formed on the upper end surface of the foundation pit leveling layer (2) and the peripheral side of the well (1), a water-stopping putty layer (4) is fixed on one side of each waterproof board (3) far away from the foundation pit leveling layer (2) and one side of each waterproof board far away from the well (1), and a concrete layer (5) is fixed on one side of each water-stopping putty layer (4) far away from the waterproof boards (3);
the upper end face of well (1) is fixed with sealed steel sheet (6), the lower terminal surface of sealed steel sheet (6) is fixed with the butt in center department and is in the rubber layer (7) of well (1) inner wall, the upper end face of sealed steel sheet (6) be fixed with the inflation layer (8) of the bonding of concrete layer (5).
2. The underground construction deep well precipitation wellhead plugging structure according to claim 1, wherein one end, abutting against the well (1), of the water-stopping putty layer (4) is provided with a first inclined surface (9) on the upper end surface, and one end, close to the well (1), of the first inclined surface (9) is higher than one end, far away from the well (1), of the first inclined surface.
3. The underground construction deep well precipitation wellhead plugging structure according to claim 1, wherein a steel pipe (10) is sleeved on the periphery of the well (1), one end of the steel pipe (10) extends into the foundation pit leveling layer (2), the other end of the steel pipe extends to abut against the lower end face of the sealing steel plate (6), and the waterproof plate (3) and the water-stopping putty layer (4) are fixed on the outer peripheral side wall of the steel pipe (10).
4. The plugging structure of the deep well dewatering wellhead of the underground engineering according to claim 3, characterized in that a supporting steel plate (11) is welded on the periphery of the steel pipe (10) near the upper end face, and the supporting steel plate (11) abuts against the lower end face of the sealing steel plate (6).
5. The underground construction deep well precipitation wellhead plugging structure according to claim 4, characterized in that a second inclined plane (12) is arranged on the periphery of the sealing steel plate (6), and one end of the second inclined plane (12) close to the center of the sealing steel plate (6) is higher than one end far away from the center of the sealing steel plate (6).
6. The plugging structure for the deep well dewatering wellhead of the underground engineering according to claim 5, characterized in that a waterproof layer (13) is fixed on the upper end surfaces of the second inclined surface (12) and the supporting steel plate (11).
7. The plugging structure for the deep well dewatering wellhead in the underground engineering according to claim 4, characterized in that a plurality of triangular ribs (14) are fixed between the lower end face of the supporting steel plate (11) and the outer wall of the steel pipe (10).
8. The underground construction deep well dewatering wellhead plugging structure according to claim 1, characterized in that a sand grain layer (15) is fixed between the foundation pit layer and the foundation pit leveling layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921039240.7U CN210712891U (en) | 2019-07-03 | 2019-07-03 | Underground engineering deep well precipitation wellhead plugging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921039240.7U CN210712891U (en) | 2019-07-03 | 2019-07-03 | Underground engineering deep well precipitation wellhead plugging structure |
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| Publication Number | Publication Date |
|---|---|
| CN210712891U true CN210712891U (en) | 2020-06-09 |
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| CN201921039240.7U Expired - Fee Related CN210712891U (en) | 2019-07-03 | 2019-07-03 | Underground engineering deep well precipitation wellhead plugging structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922213A (en) * | 2022-06-08 | 2022-08-19 | 中冶建工集团有限公司 | Pressure-bearing dewatering well and well sealing construction method thereof |
-
2019
- 2019-07-03 CN CN201921039240.7U patent/CN210712891U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922213A (en) * | 2022-06-08 | 2022-08-19 | 中冶建工集团有限公司 | Pressure-bearing dewatering well and well sealing construction method thereof |
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Granted publication date: 20200609 |
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