CN217783522U - Long tunnel activity fracture area supporting construction suitable for TBM construction - Google Patents
Long tunnel activity fracture area supporting construction suitable for TBM construction Download PDFInfo
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- CN217783522U CN217783522U CN202221290073.5U CN202221290073U CN217783522U CN 217783522 U CN217783522 U CN 217783522U CN 202221290073 U CN202221290073 U CN 202221290073U CN 217783522 U CN217783522 U CN 217783522U
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- long tunnel
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- waterproof board
- tbm construction
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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 invention belongs to the field of hydraulic engineering application research, and particularly relates to a long tunnel movable fracture zone supporting structure suitable for TBM construction. The structure adopts the reinforced concrete short lining which is suitable for the tangential dislocation of the movable fault, and is assisted with strengthening water stop and wide deformation structural joints, so that the TBM construction technology can be popularized in tunnels with movable fractures, and the safe operation is ensured.
Description
Technical Field
The invention belongs to the field of hydraulic engineering application research, and particularly relates to a long tunnel movable fracture zone supporting structure suitable for TBM construction.
Background
China is a country with more earthquakes, the number of main regional activity fractures in the country reaches 89, the fractures are almost distributed in most regions of China, and the distribution characteristics of more west and less east are mainly shown. The active fault influence zone can not only generate larger tangential displacement when an earthquake occurs, but also generate a certain amount of tangential strain at ordinary times every year, thereby bringing a plurality of hidden dangers to the lining structure safety of the tunnel engineering.
The TBM construction technology is a construction method for tunneling and excavating tunnels by adopting a tunnel boring machine, the tunnels are supported by prefabricated concrete pipes after excavation, and secondary lining is not required to be additionally arranged on the supported tunnels. However, the precast concrete segment support has defects, and the lining formed by splicing the precast concrete segments is in a rigid support form and is difficult to adapt to the tangential strain at the position of a tunnel fracture zone, so that the application of the TBM construction technology in tunnel engineering is limited, and particularly the application in tunnel engineering with movable faults is limited.
Disclosure of Invention
Hardly adapt to the tunnel for the precast concrete section of jurisdiction of solving the adoption among the TBM construction technology and cross the problem that the tangential of activity fracture area department is met an emergency, the utility model provides a cracked supporting construction of activity is crossed to long tunnel suitable for TBM construction.
The utility model discloses a long tunnel activity fault zone supporting structure suitable for TBM construction sets up in long tunnel activity fault zone, its characterized in that supporting structure includes a plurality of dry concrete short lining cutting sections, waterproof board, rubber waterstop, copper waterstop, sealed glue: the short lining section of concrete covers at the tunnel internal surface, and the deformation structure seam is reserved to the short lining intersegmental of adjacent concrete, and the waterproof board is filled in the deformation structure seam, runs through two adjacent short lining sections of concrete and waterproof board and is provided with rubber waterstop and copper waterstop, and the outer deformation structure seam intussuseption of waterproof board is filled with sealed glue.
Specifically, a pea gravel grouting layer is arranged between the inner surface of the tunnel and the gap of the concrete short lining section.
Specifically, the length of the concrete short lining segment is 6cm, and the width of the deformation structure seam is 5cm.
Specifically, the waterproof board is made of polyethylene closed-cell foam.
Specifically, the rubber water stop adopts a 651 type rubber water stop.
Specifically, the sealant is polysulfide sealant.
The utility model discloses a long tunnel activity fracture area supporting construction suitable for TBM construction adopts the short lining cutting of reinforced concrete of adaptation activity fault tangential dislocation, is aided with reinforcing stagnant water and wide deformation structure seam, makes TBM construction technology can promote and ensure safe operation in having the cracked tunnel of activity. The method has the advantages of simple structure, convenient operation, strong universality, flexible construction and good air supplement and exhaust effects, and is a safe method for supporting and treating the movable fracture zone of the long tunnel.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the schematic diagram of the construction position of the present invention.
Wherein, the concrete short lining section 1, the waterproof board 2, the rubber waterstop 3, the copper waterstop 4 and the sealant 5
Detailed Description
Example 1: in the water transfer project, a certain pressure diversion tunnel passes through a movable fracture zone, and a TBM construction technology is planned to be adopted due to the fact that the construction period is short. Adopt the steel section of jurisdiction as temporary support measure in the area scope is fractured in the activity, treat the tunnel whole tunnel section TBM construction tunnelling and link up the back, demolish the steel-pipe piece that is used for preliminary bracing, can adapt to the short lining section of concrete that fracture area tangential was moved in the activity instead, make TBM construction technology can promote and ensure safe operation in the tunnel that has the fracture area in the activity, its construction steps are as follows:
1) TBM construction is tunneled to the edge of a tunnel movable fracture zone, and precast concrete segments are synchronously installed;
2) TBM is constructed to a tunnel movable fracture zone, meanwhile, steel pipe pieces are laid, and a pea gravel grouting layer is filled in gaps between the steel pipe pieces and the tunnel;
3) The TBM construction is carried out by erecting a mold behind a movable fracture zone and pouring a concrete short lining section 1, wherein the length of the concrete short lining section 1 is 6cm, and a 651-type rubber water stop belt 3 and a copper water stop sheet 4 are synchronously embedded in the concrete short lining section 1;
4) Establish 5cm wide deformation structure seam and place the waterproof board 2 of polyethylene obturator foam material in the seam between two adjacent short lining cutting sections of concrete 1, rubber waterstop 3 and copper waterstop 4 run through the waterproof board, fill sealant 5 in the deformation structure seam outside the waterproof board 2, the sealant adopts polysulfide sealant.
Claims (6)
1. Long tunnel activity fracture area supporting construction suitable for TBM construction sets up in long tunnel activity fracture area, its characterized in that supporting construction includes if dry concrete short lining section (1), waterproof board (2), rubber waterstop (3), copper waterstop (4), sealed glue (5): concrete short lining section (1) covers at the tunnel internal surface, and adjacent concrete short lining intersegmental reservation warp structure seam warp, warp the intussuseption of structure seam and fill waterproof board (2), runs through two adjacent concrete short lining sections (1) and waterproof board (2) and is provided with rubber waterstop (3) and copper waterstop (4), and the outer deformation structure seam intussuseption of waterproof board is filled with sealed glue (5).
2. The long tunnel movable fracture zone supporting structure suitable for TBM construction according to claim 1, wherein a pea gravel grouting layer is arranged between the inner surface of the tunnel and the gap of the concrete short lining section (1).
3. The long tunnel movable fracture zone supporting structure suitable for TBM construction as claimed in claim 1, wherein the length of the concrete short lining section (1) is 6cm, and the width of the deformed structure seam is 5cm.
4. The long tunnel movable fracture zone supporting structure suitable for TBM construction as claimed in claim 1, wherein the waterproof board (2) is made of polyethylene closed-cell foam waterproof board.
5. The long tunnel movable fracture zone supporting structure suitable for TBM construction as claimed in claim 1, wherein the rubber water stop (3) is a type 651 rubber water stop.
6. The long tunnel moving fracture zone support structure suitable for TBM construction as claimed in claim 1, wherein the sealant (5) is polysulfide sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221290073.5U CN217783522U (en) | 2022-05-27 | 2022-05-27 | Long tunnel activity fracture area supporting construction suitable for TBM construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221290073.5U CN217783522U (en) | 2022-05-27 | 2022-05-27 | Long tunnel activity fracture area supporting construction suitable for TBM construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217783522U true CN217783522U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221290073.5U Active CN217783522U (en) | 2022-05-27 | 2022-05-27 | Long tunnel activity fracture area supporting construction suitable for TBM construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217783522U (en) |
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2022
- 2022-05-27 CN CN202221290073.5U patent/CN217783522U/en active Active
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