CN213392181U - Gush water and gush mud tunnel supporting construction - Google Patents
Gush water and gush mud tunnel supporting construction Download PDFInfo
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- CN213392181U CN213392181U CN202020407846.8U CN202020407846U CN213392181U CN 213392181 U CN213392181 U CN 213392181U CN 202020407846 U CN202020407846 U CN 202020407846U CN 213392181 U CN213392181 U CN 213392181U
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Abstract
The utility model discloses a gush water suddenly mud tunnel supporting construction, a serial communication port, include: the gushing substance grouting structure is used for vertically grouting gushing water and mud gushing substances in the tunnel; the first circulating grouting structure is used for grouting water burst mud gushing-out objects so as to solidify a tunnel face; and the second circulating grouting structure is used for grouting the rear area of the tunnel face after the tunnel face is excavated. The method can safely and quickly process the water burst mud burst substances in the tunnel in different stages, can greatly improve the construction efficiency, and reduces the construction cost.
Description
Technical Field
The utility model relates to a geotechnical engineering field specifically is a gush water and suddenly mud tunnel supporting construction.
Background
In the process of tunnel construction through the water-rich fault fracture zone, due to the influence of the water-rich fault fracture zone, the risk of causing geological disasters such as water burst, mud burst and the like can be caused, so that the construction safety is seriously threatened, and the influence on the surrounding environment can be further caused.
Application number 201821958794.2's patent application ("gush water and gush mud tunnel curtain slip casting structure") discloses a gush water and gush mud tunnel curtain slip casting structure, and it is mainly strutted and offer through the pipe shed that is close to the tunnel vault setting and is located at the grout stopping wall the below is strutted to the pipe shed, and is the first group grouting hole that the concentric circles was laid, the slip casting is accomplished to second group grouting hole and third group grouting hole in proper order. However, in the above scheme, the curtain grouting is completed through the groups of grouting holes simply and sequentially, and the overall reinforcing effect structure is not good.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a gush water and gush mud tunnel supporting construction, it can both carry out safety, quick processing to gushing water and gush out mud in the tunnel in different stages, can improve the efficiency of construction by a wide margin, reduces construction cost.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a gush water and gush mud tunnel supporting construction, it includes: the gushing substance grouting structure is used for vertically grouting gushing water and mud gushing substances in the tunnel; the first circulating grouting structure is used for grouting water burst mud gushing-out objects so as to solidify a tunnel face; and the second circulating grouting structure is used for grouting the rear area of the tunnel face after the tunnel face is excavated.
Preferably, the gush grouting structure comprises: the plum blossom type gushing object grouting holes are arranged on the gushing water and mud gushing objects in the tunnel; and the gushing object grouting pipe extends into the gushing object grouting hole and is used for vertically grouting the gushing water mud gushing object.
Preferably, the first circulation grouting structure includes: a first construction platform located within the tunnel; the bottom end of the first grout stopping wall is embedded into the construction platform; a filler for completely/partially filling a rear space of the first grout stopping wall; a first circulation grouting hole passing through the grout stop wall and extending in the water gushing gush and/or the filler; and the first circulating grouting pipe extends into the first circulating grouting hole so as to perform grouting on the area behind the grout stop wall through the first circulating grouting pipe and solidify the tunnel face.
Preferably, a concrete layer with the thickness of 15-25cm is poured on the first construction platform; the first grout stopping wall is formed by pouring C30 concrete, and the thickness of the first grout stopping wall is 1.5-2.5 m; and the bottom end of the first grout stopping wall is embedded into the construction platform, and the embedding depth is 1-1.5 m.
Preferably, the first circulation grouting hole includes: one or more of the first grouting hole, the second grouting hole and the third grouting hole; the first circulating slip casting pipe includes: one or more of a first grouting pipe, a second grouting pipe and a third grouting pipe;
the first grouting pipe extends into the first grouting hole so as to carry out forward grouting through the first grouting pipe; and the second grouting pipe/the third grouting pipe correspondingly extends into the second grouting hole/the third grouting hole so as to perform sleeve valve pipe grouting through the second grouting pipe/the third grouting pipe.
Preferably, the second/third grouting pipe includes a sleeve valve pipe assembly, and the sleeve valve pipe assembly includes: at least 2 sleeve valve pipes which are lapped side by side, wherein the front end 5-7m of each sleeve valve pipe is a grouting section, the grouting section is provided with a plurality of grout overflow holes, and the end part of each sleeve valve pipe is in a taper shape.
Preferably, the section spacing between two adjacent slurry overflow holes is 70-80 cm.
Preferably, the second circulation grouting structure includes: the second construction platform is positioned behind the tunnel face formed after excavation; the bottom end of the second grout stopping wall is embedded into the second construction platform; the second circulating grouting hole penetrates through the second grout stopping wall and the tunnel face and extends in the rear area of the tunnel face; and the second circulating grouting pipe extends into the second circulating grouting hole so as to perform forward sectional grouting and/or backward sectional grouting on the rear area of the tunnel face through the second circulating grouting pipe.
Preferably, a concrete layer with the thickness of 15-25cm is poured on the second construction platform; the second grout stopping wall is formed by pouring C30 concrete, and the thickness of the second grout stopping wall is 1.5-2.5 m; and the bottom end of the second grout stopping wall is embedded into the construction platform, and the embedding depth is 1-1.5 m.
Preferably, the gushing water mud outburst tunnel supporting structure further comprises: and a plurality of water drainage holes are formed in the primary arch part.
Compared with the prior art, the utility model discloses possess following beneficial effect:
the water burst mud-outburst tunnel supporting structure can firstly and quickly carry out grouting reinforcement on water burst mud-outburst so as to solidify the tunnel face and facilitate subsequent excavation; after the tunnel face is excavated, forward sectional grouting and/or backward sectional grouting can be carried out on the rear area of the tunnel face, so that the water burst and mud burst gushing matters in the tunnel can be safely and quickly treated at different stages, the construction efficiency can be greatly improved, and the construction cost is reduced.
Drawings
FIG. 1 is a longitudinal section of a midstream grouting structure and a first circulating grouting structure of the present invention;
FIG. 2 is a cross-sectional view of a first circulation grouting hole of the present invention;
FIG. 3 is a cross-sectional view of a second circulation grouting hole of the present invention;
fig. 4 is a longitudinal section of a second circulation grouting structure of the present invention;
fig. 5 is a front view of the middle sleeve valve tube of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1-2, the water and mud burst tunnel supporting structure in this embodiment includes: a gushing substance grouting structure for vertically grouting a gushing water-mud gushing substance S in the tunnel 100; the first circulating grouting structure is used for grouting water burst mud gushing-out objects S so as to solidify the tunnel face; the second circulating grouting structure is used for grouting the rear area of the tunnel face after the tunnel face is excavated;
specifically, the gush grouting structure includes:
the gushing substance grouting holes are arranged on the gushing water mud gushing substance S in the tunnel 100 according to a quincunx pattern with the interval of 1.2m multiplied by 1.2m, and the diameter of the gushing substance grouting holes is 30-60mm (preferably 50 mm);
and a gushing object grouting pipe (preferably a steel floral pipe with the diameter of 42 mm) extending into the gushing object grouting hole and used for vertically grouting the gushing water mud gushing object S to form a vertical grouting section S1.
The first circulating grouting structure comprises:
the first construction platform 1 is positioned in the tunnel 100, can be obtained by leveling and compacting gushing water and mud gushing substances S, has the length of 9-15m, and is used for a drilling machine to complete construction operation; further, a concrete layer 11 with the thickness of 15-25cm (preferably 20cm) is formed on the first construction platform 1 by pouring C20, so that a drilling machine can move and position conveniently, and the work efficiency is improved;
the first grout stopping wall 2 is formed by pouring C30 concrete, has the thickness of 1.5-2.5m (preferably 2.0m), and is embedded into the construction platform 1 at the bottom end of the first grout stopping wall 2, and the embedding depth is 1-1.5m, so that the first grout stopping wall 2 can be firmly integrated with the first construction platform 1, and the structural stability is improved;
a filler 3 (such as a sand bag and the like) for completely/partially filling the rear gap of the first grout stopping wall 2 so as to ensure the stability of the first grout stopping wall 2 during grouting;
a first circulation grouting hole 4 passing through said grout stop wall 2 and extending in said water gushing out S and/or filler 3; and the external inserting angle of the first circulating grouting hole 4 is 1-3 degrees;
and the first circulating grouting pipe stretches into the first circulating grouting hole 4, so that the first circulating grouting pipe can be used for grouting the area behind the grout stopping wall 2 to fill the gap behind the grout stopping wall 2 and reinforce the surrounding rock so as to consolidate the tunnel face.
And when grouting is carried out on the area behind the grout stop wall 2, cement-water glass double-liquid grout/common cement single-liquid grout is adopted.
Further, as shown in fig. 4 to 5, the second circulation grouting structure includes:
the second construction platform 5 is positioned behind the tunnel face 200 formed after excavation, can be obtained by leveling and compacting the ground surface in the tunnel 100, has a length of 9-15m and is used for a drilling machine to complete construction operation; furthermore, a concrete layer with the thickness of 15-25cm (preferably 20cm) is poured and formed on the second construction platform by adopting C20, so that a drilling machine can move and position conveniently, and the work efficiency is improved;
the second grout stopping wall 6 is formed by pouring C30 concrete, the thickness of the second grout stopping wall is 1.5-2.5m (preferably 2.0m), the bottom end of the second grout stopping wall is embedded into the second construction platform, and the embedding depth is 1-1.5m, so that the second grout stopping wall and the second construction platform can be combined into a firm whole, and the stability of the structure is improved;
a second circulation grouting hole 7 which penetrates through the second grout stopping wall 6 and the tunnel face 200 and extends in the area behind the tunnel face 200; and the external inserting angle of the second circulating grouting hole 7 is 1-3 degrees; in this embodiment, the second circulating grouting holes 7 are arranged in a single circulation manner, and there are 51 holes;
and a second circulating grouting pipe 8 extending into the second circulating grouting hole 7 so as to perform forward sectional grouting and/or backward sectional grouting on the region behind the tunnel face 200 through the second circulating grouting pipe 8.
The second circulating grouting pipe 8 is formed by processing a seamless steel pipe with the diameter of 108mm and the delta of 6mm, the length of the pipe is 1.2m, hemp threads with the length of 50-80 cm are wound on the outer wall of the pipe, and a spindle-shaped structure is integrally formed; and when grouting is carried out on the area behind the tunnel face 200, cement-water glass double-liquid slurry/common cement single-liquid slurry/sulphoaluminate cement single-liquid slurry is adopted.
Example 2:
the present embodiment is different from embodiment 1 only in that, as shown in fig. 4 to 5, the first circulation grouting holes 4 include: one or more of a first grout hole, a second grout hole and a third grout hole, the first circulating grout pipe comprising: one or more of a first grouting pipe, a second grouting pipe and a third grouting pipe; the first grouting pipe comprises an orifice pipe which extends into the first grouting hole so as to perform forward grouting through the first grouting pipe; the second grouting pipe/third grouting pipe comprises a sleeve valve pipe assembly 9 which correspondingly extends into the second grouting hole/third grouting hole (namely the second grouting pipe extends into the second grouting hole, and the third grouting pipe extends into the third grouting hole) so as to perform sleeve valve pipe grouting through the second grouting pipe/third grouting pipe.
Further, the first grouting pipe is formed by processing a seamless steel pipe with the diameter of 108mm and the delta of 6mm, the length of the pipe is 1.2m, 50-80 cm long hemp threads are wound on the outer wall of the pipe, and a spindle-shaped structure is integrally formed; the sleeve valve tube assembly 9 comprises: the sleeve valve tubes 91 are processed by seamless steel tubes with the diameter of 42mm and the wall thickness of 3.5mm, 5-7m of the front end of each sleeve valve tube 91 is a grouting section 911, a plurality of slurry overflow holes 912 with the diameter of 8mm are formed in the grouting section 911, the end parts of the slurry overflow holes 912 are in a taper shape, and the section space between every two adjacent slurry overflow holes 912 is 70-80cm (preferably 75 cm).
Example 3:
the present embodiment is different from embodiment 1 or 2 only in that the water inrush mud tunnel support structure in the present embodiment further includes: and the water drainage holes are formed in the primary arch part to prevent the reinforcing ring from being punctured due to excessive water pressure.
To sum up, the water burst mud-outburst tunnel supporting structure can firstly and quickly carry out grouting reinforcement on water burst mud-outburst so as to solidify a tunnel face and facilitate subsequent excavation; after the tunnel face is excavated, forward sectional grouting and/or backward sectional grouting can be carried out on the rear area of the tunnel face, so that the water burst and mud burst gushing matters in the tunnel can be safely and quickly treated at different stages, the construction efficiency can be greatly improved, and the construction cost is reduced.
It should be noted that the technical features of the above embodiments 1 to 3 can be arbitrarily combined, and the technical solutions obtained by combining the technical features belong to the scope of the present application. And in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a gush water and gush mud tunnel supporting construction which characterized in that includes: the gushing substance grouting structure is used for vertically grouting gushing water and mud gushing substances in the tunnel; the first circulating grouting structure is used for grouting water burst mud gushing-out objects so as to solidify a tunnel face; and the second circulating grouting structure is used for grouting the rear area of the tunnel face after the tunnel face is excavated.
2. The water-gushing cement-outburst tunnel support structure of claim 1, wherein the gush grouting structure comprises: the plum blossom type gushing object grouting holes are arranged on the gushing water and mud gushing objects in the tunnel; and the gushing object grouting pipe extends into the gushing object grouting hole and is used for vertically grouting the gushing water mud gushing object.
3. The water-gushing mud-outburst tunnel support structure of claim 1, wherein the first circulating grouting structure comprises: a first construction platform located within the tunnel; the bottom end of the first grout stopping wall is embedded into the construction platform; a filler for completely/partially filling a rear space of the first grout stopping wall; a first circulation grouting hole passing through the grout stop wall and extending in the water gushing gush and/or the filler; and the first circulating grouting pipe extends into the first circulating grouting hole so as to perform grouting on the area behind the grout stop wall through the first circulating grouting pipe and solidify the tunnel face.
4. The water-gushing mud-outburst tunnel supporting structure of claim 3, wherein a concrete layer with the thickness of 15-25cm is poured on the first construction platform; the first grout stopping wall is formed by pouring C30 concrete, and the thickness of the first grout stopping wall is 1.5-2.5 m; and the bottom end of the first grout stopping wall is embedded into the construction platform, and the embedding depth is 1-1.5 m.
5. The water-gushing mud-outburst tunnel support structure of claim 3, wherein the first circulation grouting hole comprises: one or more of the first grouting hole, the second grouting hole and the third grouting hole; the first circulating slip casting pipe includes: one or more of a first grouting pipe, a second grouting pipe and a third grouting pipe;
the first grouting pipe extends into the first grouting hole so as to carry out forward grouting through the first grouting pipe; and the second grouting pipe/the third grouting pipe correspondingly extends into the second grouting hole/the third grouting hole so as to perform sleeve valve pipe grouting through the second grouting pipe/the third grouting pipe.
6. The water gushing mud tunnel supporting structure of claim 5, wherein the second/third grout pipe comprises a sleeve valve pipe assembly, and the sleeve valve pipe assembly comprises: at least 2 sleeve valve pipes which are lapped side by side, wherein the front end 5-7m of each sleeve valve pipe is a grouting section, the grouting section is provided with a plurality of grout overflow holes, and the end part of each sleeve valve pipe is in a taper shape.
7. The water-gushing mud-outburst tunnel supporting structure of claim 6, wherein the section spacing between two adjacent grout holes is 70-80 cm.
8. The water-gushing mud-outburst tunnel support structure of claim 1, wherein the second circulating grouting structure comprises: the second construction platform is positioned behind the tunnel face formed after excavation; the bottom end of the second grout stopping wall is embedded into the second construction platform; the second circulating grouting hole penetrates through the second grout stopping wall and the tunnel face and extends in the rear area of the tunnel face; and the second circulating grouting pipe extends into the second circulating grouting hole so as to perform forward sectional grouting and/or backward sectional grouting on the rear area of the tunnel face through the second circulating grouting pipe.
9. The water-gushing mud-outburst tunnel supporting structure of claim 8, wherein a concrete layer with the thickness of 15-25cm is poured on the second construction platform; the second grout stopping wall is formed by pouring C30 concrete, and the thickness of the second grout stopping wall is 1.5-2.5 m; and the bottom end of the second grout stopping wall is embedded into the construction platform, and the embedding depth is 1-1.5 m.
10. The water-gushing cement-outburst tunnel support structure of claim 9, further comprising: and a plurality of water drainage holes are formed in the primary arch part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020407846.8U CN213392181U (en) | 2020-03-26 | 2020-03-26 | Gush water and gush mud tunnel supporting construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020407846.8U CN213392181U (en) | 2020-03-26 | 2020-03-26 | Gush water and gush mud tunnel supporting construction |
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| CN213392181U true CN213392181U (en) | 2021-06-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404517A (en) * | 2021-08-03 | 2021-09-17 | 福建工程学院 | Construction method for mud-bursting and water-flushing of tunnel |
| CN114483109A (en) * | 2022-03-31 | 2022-05-13 | 中交第一航务工程局有限公司 | Curtain grouting advanced large pipe shed penetrating construction method for penetrating tunnel fault fracture zone |
-
2020
- 2020-03-26 CN CN202020407846.8U patent/CN213392181U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404517A (en) * | 2021-08-03 | 2021-09-17 | 福建工程学院 | Construction method for mud-bursting and water-flushing of tunnel |
| CN113404517B (en) * | 2021-08-03 | 2023-09-22 | 福建工程学院 | Construction method for tunnel mud bursting and water flushing |
| CN114483109A (en) * | 2022-03-31 | 2022-05-13 | 中交第一航务工程局有限公司 | Curtain grouting advanced large pipe shed penetrating construction method for penetrating tunnel fault fracture zone |
| CN114483109B (en) * | 2022-03-31 | 2022-07-12 | 中交第一航务工程局有限公司 | Curtain grouting advanced large pipe shed through construction method for crossing tunnel fault fracture zone |
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