CN219605281U - Advanced support structure for tunnel construction - Google Patents
Advanced support structure for tunnel construction Download PDFInfo
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- CN219605281U CN219605281U CN202321298684.9U CN202321298684U CN219605281U CN 219605281 U CN219605281 U CN 219605281U CN 202321298684 U CN202321298684 U CN 202321298684U CN 219605281 U CN219605281 U CN 219605281U
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- tunnel
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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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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to the technical field of tunnel construction, in particular to a tunnel construction advanced support structure, which has the technical scheme that: the support assembly is arranged on the inner wall of the tunnel, comprises a tunnel support frame arranged on the inner wall of the tunnel, further comprises a support piece arranged on the tunnel support frame, comprises a hydraulic support column arranged on the inner wall of the tunnel support frame, and further comprises a longitudinal connecting piece arranged at the top of the hydraulic support column; the support piece further comprises an advanced circulating support piece arranged on the inner wall of the tunnel support frame, the advanced circulating support piece comprises a plurality of support modules which are connected with each other, the support modules are used for supporting the inner wall of the tunnel, and the support modules can alternately and circularly advance, so that the stability of the surrounding rock free face of the face is improved, and the technical effects of surrounding rock collapse and collapse risk are reduced.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a tunnel construction advanced support structure.
Background
Tunnel construction generally refers to excavation of a tunnel in a mountain or underground, and when the tunnel construction is performed, a supporting device is generally required to be used for supporting and protecting in order to avoid injury to personnel caused by collapse of the tunnel top.
Most tunnels now adopt a new Otto construction process, V-class and weaker surrounding rocks are generally constructed by adopting a three-step core-retaining soil or side wall pilot pit method, and a large tunnel or a leading small guide pipe is used for grouting and supporting arch roof surrounding rocks; the prior tunnel advanced support has complex working procedures, complex process and low efficiency. Therefore, the utility model discloses a tunnel construction advanced support structure.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a tunnel construction advanced support structure.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a tunnel construction advance support structure, includes supporting component, supporting component sets up on the tunnel inner wall, supporting component includes the tunnel support frame that sets up on the tunnel inner wall, still includes the support piece that sets up on the tunnel support frame, the support piece includes the step of setting up on the tunnel support frame inner wall;
the support piece comprises a hydraulic support column arranged on the side wall of the tunnel support frame and also comprises a longitudinal connecting piece arranged at the top of the hydraulic support column;
the support piece further comprises an advanced circulation support piece arranged on the inner wall of the tunnel support frame, the advanced circulation support piece comprises a plurality of support modules which are connected with each other, and the support modules are used for supporting the inner wall of the tunnel.
Preferably, the support module comprises a plurality of end-to-end connection steel structures, each connection steel structure comprises a section steel and a connection steel plate arranged on the side wall of the section steel, and the connection steel plates are used for connecting adjacent section steel.
Preferably, the profile steel is provided with a chute for the connecting steel plate to pass through, the end part of the connecting steel plate is provided with an anti-slip hook, and the anti-slip hook is arranged in the chute in a penetrating way.
Preferably, the steps comprise an upper step, a middle step and a lower step, and the hydraulic support columns are arranged at the bottoms of the longitudinal connecting pieces in a plurality.
Preferably, the longitudinal connector comprises a plurality of longitudinal connecting rods, and the top of the hydraulic support column is arranged at the bottom of the plurality of longitudinal connecting rods.
Preferably, the tunnel support frame comprises a plurality of section steel arches connected with the longitudinal connecting rods, and the section steel arches are uniformly distributed on the inner wall of the tunnel.
Preferably, the hydraulic support column is obliquely arranged.
Preferably, the tunnel supporting frame further comprises a plurality of steel sheet piles penetrating into the tunnel, and the steel sheet piles are uniformly arranged along the tunnel excavation contour line.
The utility model also provides a tunnel construction advanced support process,
step one: positioning and orienting a first pile at the topmost end of the tunnel, which is 300mm lower than the design contour line, then inserting the first pile in a hammering or hydraulic jacking mode, and then sequentially inserting other piles to form a circulating steel curtain which is an advanced circulating support piece;
step two: excavating the circulating steel curtain by adopting mechanical equipment, wherein the footage is 500-1000mm;
step three: inserting a steel curtain pile plate alternately for 500mm, stripping the outer side of the steel curtain to the designed contour line surrounding rock, and installing a steel arch;
step four: a radial anchor rod is applied between the installed section steel arches;
step five: after a plurality of steel arches are installed, the steel arches are longitudinally connected by using the steel to form a combined arch, and the middle step and the lower step are installed by adopting the same mode.
The utility model has the beneficial effects that:
1. forming a steel structure curtain in front of a tunnel face in a tunnel, maintaining surrounding rock stable, uniformly penetrating a plurality of steel piles (section steel, round pipes and Lassen steel sheet piles) lower than the tunnel excavation outline into front of the tunnel face in the process of excavating the tunnel, and connecting two adjacent steel piles through steel plates to form a supporting function for the tunnel face;
2. the advanced circulating support piece is arranged, a plurality of connecting steel piles are connected with each other, the connecting steel plates are arranged in the sliding grooves of the adjacent section steel in a penetrating mode, the steel curtains can be formed by means of interactive advancing, and the risks of surrounding rock collapse and collapse are reduced;
3. after the section steel arch is installed, the hydraulic support is braced at a distance of about 1 meter from the arch leg of the section steel arch to form a vertical tunnel wall and a vertical upward supporting force, so that the overall supporting capacity is improved;
4. the advanced steel structure can be repeatedly used all the time without deformation, the cost is low, the deformation component is convenient to replace, and the whole process is simple and convenient to operate;
5. the integral stress of the combined steel structure component can avoid the risk of instability of the arch frame caused by the suspension of the arch springing when the arch frame is spliced.
Drawings
FIG. 1 is a front view showing the overall structure of embodiment 1 of the present utility model;
FIG. 2 is a side view of the overall structure of embodiment 1 of the present utility model;
FIG. 3 is a schematic diagram for embodying FIG. 1A;
FIG. 4 is a schematic view of the overall structure of FIG. 3 at another angle;
fig. 5 is a schematic diagram for embodying at B in fig. 1.
2, supporting the assembly; 21. a tunnel support; 22. a support; 221. a hydraulic support column; 3. a longitudinal abutment; 31. a longitudinal connecting rod; 4. an advanced circulation support; 42. connecting a steel frame; 43. connecting steel plates; 44. section steel; 45. a chute; 46. an anti-slip hook; 51. a step is arranged; 52. a middle step; 53. and (5) descending a step.
Detailed Description
In order to more clearly illustrate the present utility model, the present utility model will be described in further detail below with reference to examples and with reference to the accompanying drawings. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this utility model is not limited to the details given herein.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element 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 utility model. Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected, indirectly connected through an intermediate medium, or may be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Examples:
referring to fig. 1, the advanced support structure for tunnel construction disclosed by the utility model comprises a support component 2, wherein a steel structure curtain is formed in front of a tunnel face in a tunnel to maintain surrounding rock stable, and the support component 2 is used for providing advanced support for the tunnel face in the tunnel in the process of excavating the tunnel. The support assembly 2 comprises a tunnel support frame 21 arranged on the inner wall of a tunnel and a support piece 22 arranged on the tunnel support frame 21, wherein the tunnel support frame 21 further comprises a plurality of steel sheet piles penetrating in the tunnel, the steel sheet piles are uniformly arranged along the excavation contour line of the tunnel, and steel plates passing through the two adjacent steel sheet piles are connected to form a support function on the tunnel face.
Referring to fig. 1 to 3, the support 22 includes steps provided on the inner wall of the tunnel supporting frame 21, the steps being formed of an upper step 51, a middle step 52, and a lower step 53, the middle step 52 and the lower step 53 supporting both sidewalls of the tunnel; the support 22 includes a hydraulic support column 221 provided on a side wall of the tunnel support frame 21, the hydraulic support column 221 being inclined, and a longitudinal connector 3 provided on top of the hydraulic support column 221. The tunnel supporting frame 21 comprises a plurality of section steel arches connected with the longitudinal connecting rods 31, and the section steel arches are uniformly distributed on the inner wall of the tunnel.
The longitudinal connector 3 comprises a plurality of longitudinal connecting rods 31 connected to the side walls of the section steel arch, the section steel arch is combined and fixed by the longitudinal connecting rods 31, and the hydraulic support columns 221 are arranged to provide supporting force for the vertical upward and vertical tunnel walls, and the hydraulic support columns 221 are propped against the lower parts of the longitudinal connecting rods 31. The tunnel supporting frame 21 comprises a plurality of section steel arches connected with the longitudinal connecting rods 31, and the section steel arches are uniformly distributed on the inner wall of the tunnel.
Referring to fig. 1 to 5, the support 22 further includes a forepoling support 4 disposed on an inner wall of the tunnel support frame 21, the forepoling support 4 being used for forepoling a top wall (or circumference) of the tunnel, the forepoling support 4 including a plurality of interconnected support modules, the forepoling support 4 further including a section steel assembly, a round tube assembly, a lassen steel sheet pile assembly, and being alternately advanced. The plurality of support modules are used for supporting the inner wall of the tunnel. The support module comprises a plurality of end-to-end connection steel structures 42, wherein the connection steel structures 42 comprise profile steel 44 and connection steel plates 43 arranged on the side walls of the profile steel 44, and the connection steel plates 43 are used for connecting adjacent profile steel 44. The steel section 44 is provided with the sliding groove 45 for the connecting steel plate 43 to penetrate, the end part of the connecting steel plate 43 is provided with the anti-skid, positioning and guiding hooks 46, the anti-skid hooks 46 penetrate into the sliding groove 45, the connecting steel frames 42 are connected with each other, the anti-skid hooks 46 penetrate into the sliding groove 45 of the adjacent steel section 44 to form the steel curtain, the stability of the surrounding rock of the face is improved, and the risk of collapse and collapse of the surrounding rock is reduced.
It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and not limiting of the embodiments of the present utility model, and that various other changes and modifications can be made by those skilled in the art based on the above description, and it is not intended to be exhaustive of all the embodiments of the present utility model, and all obvious changes and modifications that come within the scope of the utility model are defined by the following claims.
Claims (8)
1. The utility model provides a tunnel construction advance support structure which characterized in that: the tunnel supporting device comprises a supporting component (2), wherein the supporting component (2) is arranged on the inner wall of a tunnel, the supporting component (2) comprises a tunnel supporting frame (21) arranged on the inner wall of the tunnel, and further comprises a supporting piece (22) arranged on the tunnel supporting frame (21), and the supporting piece (22) comprises steps arranged on the inner wall of the tunnel supporting frame (21);
the support piece (22) comprises a hydraulic support column (221) arranged on the side wall of the tunnel support frame (21), and further comprises a longitudinal connecting piece (3) arranged on the top of the hydraulic support column (221);
the support piece (22) further comprises an advanced circulation support piece (4) arranged on the inner wall of the tunnel support frame (21), and the advanced circulation support piece (4) comprises a plurality of support modules which are connected with each other and used for supporting the inner wall of the tunnel.
2. The advanced support structure for tunnel construction according to claim 1, wherein: the support module comprises a plurality of connecting steel structures (42) connected end to end, each connecting steel structure (42) comprises a section steel (44) and a connecting steel plate (43) arranged on the side wall of each section steel (44), and each connecting steel plate (43) is used for connecting adjacent section steel (44).
3. The advanced support structure for tunnel construction according to claim 2, wherein: the steel section (44) is provided with a chute (45) for the connecting steel plate (43) to penetrate through, the end part of the connecting steel plate (43) is provided with an anti-slip hook (46), and the anti-slip hook (46) penetrates through the chute (45).
4. The advanced support structure for tunnel construction according to claim 1, wherein: the steps comprise an upper step (51), a middle step (52) and a lower step (53), and the hydraulic support columns (221) are arranged at the bottoms of the longitudinal connecting pieces (3) in a plurality.
5. The advanced support structure for tunnel construction according to claim 4, wherein: the longitudinal connecting piece (3) comprises a plurality of longitudinal connecting rods (31), and the top of the hydraulic support column (221) is arranged at the bottom of the plurality of longitudinal connecting rods (31).
6. The advanced support structure for tunnel construction according to claim 5, wherein: the tunnel support frame (21) comprises a plurality of section steel arches connected with the longitudinal connecting rods (31), and the section steel arches are uniformly distributed on the inner wall of the tunnel.
7. The advanced support structure for tunnel construction according to claim 6, wherein: the hydraulic support columns (221) are obliquely arranged.
8. The advanced support structure for tunnel construction according to claim 1, wherein: the tunnel support frame (21) further comprises a plurality of steel sheet piles penetrating into the tunnel, and the steel sheet piles are uniformly arranged along the tunnel excavation contour line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321298684.9U CN219605281U (en) | 2023-05-26 | 2023-05-26 | Advanced support structure for tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321298684.9U CN219605281U (en) | 2023-05-26 | 2023-05-26 | Advanced support structure for tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219605281U true CN219605281U (en) | 2023-08-29 |
Family
ID=87744856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321298684.9U Active CN219605281U (en) | 2023-05-26 | 2023-05-26 | Advanced support structure for tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219605281U (en) |
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2023
- 2023-05-26 CN CN202321298684.9U patent/CN219605281U/en active Active
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