CN218090931U - Seepage-proofing structure for water-rich stratum vertical shaft construction - Google Patents
Seepage-proofing structure for water-rich stratum vertical shaft construction Download PDFInfo
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- CN218090931U CN218090931U CN202222312517.7U CN202222312517U CN218090931U CN 218090931 U CN218090931 U CN 218090931U CN 202222312517 U CN202222312517 U CN 202222312517U CN 218090931 U CN218090931 U CN 218090931U
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- 238000010276 construction Methods 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 4
- 239000003673 groundwater Substances 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 7
- 239000011440 grout Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses an anti-seepage structure for shaft construction of water-rich stratum, which comprises an anti-seepage side wall, the anti-seepage side wall is vertically arranged in the water-rich stratum, and the anti-seepage side wall is of an annular structure; the anti-seepage bottom wall is horizontally arranged in the water-rich stratum, the anti-seepage bottom wall is positioned inside the anti-seepage side wall, and the depth of the anti-seepage bottom wall is greater than the design depth of the vertical shaft; the outer edge of the anti-seepage bottom wall is connected with the inner ring of the anti-seepage side wall to form an anti-seepage space in a barrel-shaped structure. The utility model discloses a prevention of seepage lateral wall links together with the prevention of seepage diapire that the degree of depth is greater than the shaft design degree of depth, form the effectual tubbiness space of prevention of seepage, can excavate the soil layer in the tubbiness space and carry out the shaft construction during the construction, block the rich water stratum completely, avoid gushing the water problem among the rich water stratum shaft construction operation process, need not to draw water and reduce groundwater level, influence to surrounding environment and building is less, and the security is high, the construction of the deep shaft in the less city of specially adapted construction space.
Description
Technical Field
The utility model belongs to the technical field of the shaft construction and specifically relates to an seepage prevention structure for water-rich stratum shaft construction is related to.
Background
When the vertical shaft is constructed in a water-rich stratum, because the water content of a soil layer or a base rock layer is large, a precipitation and seepage prevention construction measure is usually adopted in the actual construction process to ensure the safe construction of the vertical shaft. At present, the following two main types of shaft construction are adopted in water-rich stratum:
the first one is dewatering and open cut construction mode, which includes setting dewatering well around the shaft to lower the underground water level in the area, excavating after the underground water level is lowered to the bottom of the shaft, and casting shaft bottom plate, shaft wall, inner structure, etc. The defects of the construction mode are as follows: firstly, precipitation easily causes the problems of settlement, cracking and the like of surrounding buildings; in addition, open cut construction often needs to occupy a large construction site, and cannot meet deep shaft engineering in cities.
The second is the open caisson method, which is to prefabricate the wall structure of the vertical shaft on the ground in sections in advance, dig earth in the well to make each prefabricated vertical shaft sink gradually under the action of dead weight, and finally pour concrete to seal the bottom, pour the internal structure of the vertical shaft, and the like. The defects of the construction mode are as follows: firstly, the problems of insufficient sinking force, deflection, sudden sinking, quicksand and the like can occur in the sinking process; in addition, the open caisson method is suitable for small-scale vertical shaft engineering, and when the plane size of the vertical shaft is large, open caisson construction is difficult.
In conclusion, the two construction modes of precipitation, open cut and open caisson are not ideal construction modes for the construction operation of the vertical shaft in the water-rich stratum. Therefore, how to design an anti-seepage structure which has low construction difficulty, small influence on the surrounding environment and buildings, small operation area, low construction cost and good anti-seepage effect is of great importance for the construction of the vertical shaft in the water-rich stratum.
Disclosure of Invention
In view of this, the utility model provides an anti-seepage structure for water-rich stratum shaft construction utilizes the tubbiness prevention of seepage space that prevention of seepage lateral wall and prevention of seepage diapire enclose, can separate shaft construction and water-rich stratum, and construction convenience, area occupied is little, has not only solved the problem of gushing water among the water-rich stratum shaft construction operation process, has still reduced the influence to all ring edge borders, has improved the security of shaft construction.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to an anti-seepage structure for the construction of a vertical shaft of a water-rich stratum, which comprises
The seepage-proofing side wall is vertically arranged in the water-rich stratum and is of an annular structure; and
the seepage-proof bottom wall is horizontally arranged in the water-rich stratum, the seepage-proof bottom wall is positioned inside the seepage-proof side wall, and the depth of the seepage-proof bottom wall is greater than the design depth of the vertical shaft;
the outer edge of the anti-seepage bottom wall is connected with the inner ring of the anti-seepage side wall to form an anti-seepage space in a barrel-shaped structure.
The utility model discloses in, the prevention of seepage lateral wall combines together with the prevention of seepage diapire that the degree of depth is greater than the shaft design degree of depth, forms the effectual tubbiness seepage prevention structure of prevention of seepage jointly, and the construction operation is inside going on in the tubbiness space that receives the protection, and is less to the influence of surrounding environment and building, and the security is high, can effectively avoid gushing the water scheduling problem among the water-rich stratum shaft construction operation process.
Preferably, the anti-seepage side wall is an annular underground wall body formed by pouring concrete and a reinforcement cage, has high structural strength and good anti-seepage performance, and can resist the water body seepage pressure of a water-rich stratum.
Preferably, the water-rich stratum in the seepage-proofing side wall is provided with a plurality of high-pressure grouting drill holes, the aperture of each high-pressure grouting drill hole is D, and the distance between every two adjacent high-pressure grouting drill holes is less than 5D.
More preferably, the grout spraying ranges of the high pressure grout holes overlap each other to form the impermeable bottom wall. The utility model discloses in, from every high pressure grout downthehole spun thick liquid pile-forming back and mutual overlap joint, and then formed the prevention of seepage diapire of integral type. In addition, grout at the edges joins the impermeable bottom wall to the impermeable side wall to form an integral water impermeable structure.
More preferably, the thickness of the seepage-proofing side wall is 0.6-1.2 m; the thickness of the anti-seepage bottom wall is 3-5 m, the structural strength and the anti-seepage performance are improved, and the construction safety is ensured.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model discloses a prevention of seepage lateral wall links together with the prevention of seepage diapire that the degree of depth is greater than the shaft design degree of depth, forms the effectual tubbiness space of prevention of seepage, can excavate the soil layer in the tubbiness space during the construction and carry out the shaft construction, has blocked the rich water stratum completely, and then avoids the problem of gushing water among the rich water stratum shaft construction operation process. The utility model discloses an anti-seepage structure for need not to draw water completely in the shaft work progress and reduce groundwater water level, it is less to the influence of surrounding environment and building. Because the construction operation of the vertical shaft is carried out in the cylindrical space with good anti-seepage effect, the construction operation space is small, the safety is high, and the method is particularly suitable for the construction of the deep vertical shaft in the city with smaller construction space.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic distribution diagram of the bottom piles of the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
The utility model discloses a core aim at provides an seepage prevention structure for water-rich stratum shaft construction, this seepage prevention structure breaks off water-rich stratum and shaft completely, the shaft construction of being convenient for.
With reference to fig. 1, the anti-seepage structure for the shaft construction of the water-rich stratum of the present invention comprises an anti-seepage side wall 1 and an anti-seepage bottom wall 2, wherein the anti-seepage side wall 1 is vertically embedded in the water-rich stratum from the ground, and the anti-seepage side wall 1 is an annular structure (i.e. an annular underground wall); the seepage-proof bottom wall 2 is horizontally arranged in the water-rich stratum, the seepage-proof bottom wall 2 is positioned inside the seepage-proof side wall 1 and connected together, and the seepage-proof bottom wall 2 and the seepage-proof side wall 1 enclose a seepage-proof operation space, so that the construction of a vertical shaft is facilitated; the depth of the anti-seepage bottom wall 2 is larger than the design depth of the vertical shaft, so that the water-rich stratum is completely separated, water in the water-rich stratum is prevented from permeating into the construction operation space of the vertical shaft from the bottom, and the normal construction of the vertical shaft is ensured.
The utility model adopts the barrel-shaped seepage-proofing space enclosed by the seepage-proofing side wall 1 and the seepage-proofing bottom wall 2 to block the influence of the underground water in the water-rich stratum on the shaft construction, thereby avoiding the water gushing problem in the shaft construction process; in addition, because the water level of underground water is not required to be reduced, the influence on the surrounding environment and buildings is reduced, and the safety is improved; the excavation operation of the vertical shaft is carried out in the barrel-shaped anti-seepage space, and the safety is high.
During actual construction, in order to improve the seepage-proofing performance and the compression resistance of the seepage-proofing side wall 1, the seepage-proofing side wall 1 is an integrated continuous wall formed by pouring seepage-proofing concrete and a reinforcement cage, the structural strength of the seepage-proofing side wall 1 is improved, lateral pressure applied by underground water can be resisted, and the safety of the whole structure is ensured.
A plurality of high-pressure grouting drill holes are formed in the water-rich stratum in the anti-seepage side wall 1, the aperture of each high-pressure grouting drill hole is D, the distance between every two adjacent high-pressure grouting drill holes is smaller than 5D, and bottom piles formed by anti-seepage cement grout at the injection positions in the high-pressure grouting drill holes are mutually overlapped to form an integrated anti-seepage bottom wall 2. The seepage-proof cement slurry and the seepage-proof side wall 1 are solidified to form a whole, so that the seepage-proof performance is improved.
During actual construction, the thickness of the anti-seepage side wall 1 is 0.6 m-1.2 m; the thickness of the anti-seepage bottom wall 2 is 3 m-5 m, the structural strength and the anti-seepage performance are improved, and the construction safety is ensured.
A seepage prevention structure for water-rich stratum shaft construction, including following content:
firstly, constructing an annular guide groove outside the designed diameter of the vertical shaft, then drilling holes at intervals along the annular direction of the guide groove, taking out soil between the drilled holes by using equipment such as a grab bucket and the like to form a communicated annular pouring groove, wherein the depth of the annular pouring groove is greater than the designed depth of the vertical shaft;
hoisting a reinforcement cage into the annular pouring groove and pouring concrete to form an integrated anti-seepage side wall 1;
secondly, drilling holes at intervals (namely high-pressure grouting drilling holes) in the stratum inside the anti-seepage side wall 1 by using drilling equipment, wherein the drilling depth is greater than the design depth of the vertical shaft, and the construction depth of the anti-seepage bottom wall 2 is ensured to be greater than the design construction depth of the vertical shaft;
after the drilling is finished, grouting is carried out by adopting a high-pressure grouting injection technology, high-pressure grout sprayed out from the drilling holes are overlapped after forming bottom piles 3 (the overlapping length is more than 30cm, the distribution of the bottom piles 3 is shown in figure 2), and an integrated anti-seepage bottom wall 2 in a plate-shaped structure is formed; in the process, the slurry sprayed at high pressure is solidified and then forms an integral structure with the impermeable side wall 1 to block water seepage in the water-rich stratum.
In the description of the invention, unless expressly stated or limited otherwise, the terms "mounted", "connected" and "connected" when used in this context are to be construed broadly, as for example they may be fixedly connected, releasably connected or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above-mentioned terms in the present invention can be understood by those skilled in the art through specific situations.
Finally, it should be emphasized that the above-described embodiments are merely preferred embodiments of the present invention, and not limitations of the invention are intended to be imposed on the scope of the present invention, and although the invention has been described in detail with reference to the above-described embodiments, it will be apparent to those skilled in the art that modifications and equivalents may be made to the embodiments described in the foregoing embodiments without inventive faculty, or that equivalents may be substituted for some of the features. Therefore, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides an anti-seepage structure for water-rich stratum shaft construction which characterized in that: comprises that
The seepage-proofing side wall is vertically arranged in the water-rich stratum and is of an annular structure; and
the seepage-proof bottom wall is horizontally arranged in the water-rich stratum, the seepage-proof bottom wall is positioned inside the seepage-proof side wall, and the depth of the seepage-proof bottom wall is greater than the design depth of the vertical shaft;
the outer edge of the anti-seepage bottom wall is connected with the inner ring of the anti-seepage side wall to form an anti-seepage space in a barrel-shaped structure.
2. The seepage-proofing structure for water-rich stratum shaft construction as claimed in claim 1, wherein: the anti-seepage side wall is an annular underground wall body formed by pouring concrete and a reinforcement cage.
3. The impermeable structure for the construction of the vertical shaft of the water-rich stratum according to claim 1, characterized in that: and a plurality of high-pressure grouting drill holes are formed in the water-rich stratum in the anti-seepage side wall, the aperture of each high-pressure grouting drill hole is D, and the distance between every two adjacent high-pressure grouting drill holes is less than 5D.
4. The impermeable structure for the construction of the vertical shaft of the water-rich stratum according to claim 3, characterized in that: and the guniting ranges of the high-pressure grouting drill holes are mutually overlapped to form the anti-seepage bottom wall.
5. The seepage-proofing structure for water-rich stratum shaft construction as claimed in claim 1, wherein: the thickness of the anti-seepage side wall is 0.6 m-1.2 m; the thickness of the anti-seepage bottom wall is 3 m-5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222312517.7U CN218090931U (en) | 2022-09-01 | 2022-09-01 | Seepage-proofing structure for water-rich stratum vertical shaft construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222312517.7U CN218090931U (en) | 2022-09-01 | 2022-09-01 | Seepage-proofing structure for water-rich stratum vertical shaft construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218090931U true CN218090931U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222312517.7U Active CN218090931U (en) | 2022-09-01 | 2022-09-01 | Seepage-proofing structure for water-rich stratum vertical shaft construction |
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| Country | Link |
|---|---|
| CN (1) | CN218090931U (en) |
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- 2022-09-01 CN CN202222312517.7U patent/CN218090931U/en active Active
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