CN214035683U - Adopt buffer's slip fault tunnel energy-absorbing shock-absorbing structure strides - Google Patents
Adopt buffer's slip fault tunnel energy-absorbing shock-absorbing structure strides Download PDFInfo
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- CN214035683U CN214035683U CN202022982434.XU CN202022982434U CN214035683U CN 214035683 U CN214035683 U CN 214035683U CN 202022982434 U CN202022982434 U CN 202022982434U CN 214035683 U CN214035683 U CN 214035683U
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Abstract
The energy-absorbing and shock-absorbing structure for the cross sliding fault tunnel adopts the buffer device, so that the structure is suitable for different dislocation amounts among lining sections under fault dislocation, has certain earthquake energy absorbing capacity and reduces the influence of an earthquake on a main lining structure of the cross sliding fault tunnel as far as possible. Buffer devices are embedded at intervals along the longitudinal direction of the tunnel at the two transverse sides of a primary tunnel supporting structure within the influence range of slippage of the tunnel, each buffer device comprises a front baffle, a rear baffle and a buffer mechanism fixedly installed between the front baffle and the rear baffle, and the front baffle is connected with an anchoring device anchored into tunnel surrounding rock.
Description
Technical Field
The utility model relates to a tunnel engineering field, in particular to adopt buffer's slip fault tunnel energy-absorbing shock-absorbing structure strides.
Background
The method has the advantages of wide breadth of our country, complex geological structure, and difficulty in completely avoiding the influence of unfavorable geological conditions such as fracture structure, plate sewing band and the like in the construction and use operation of the tunnel. The strike-slip fault is a typical geological fracture structure and is characterized in that two terrains move relatively along the direction of the layer. When the tunnel passes through the slip fault zone and fault dislocation shakes, large shearing force and horizontal displacement dislocation quantity are generated near the fault zone, and vibration is caused, so that annular cracking and dislocation damage of the tunnel lining are caused. So far, the main idea for faults is to provide a buffer layer or a flexible tunnel. The buffer layer material is difficult to solve and has the difficult problem of recycling. Flexible tunnels are difficult to resist the enormous energy of a dislocation. The construction difficulty of the cross-sliding fault tunnel needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an adopt buffer striding away sliding fault tunnel energy-absorbing shock-absorbing structure is provided to adaptation fault dislocation lower liner section diverse's the dislocation volume, still have certain absorption earthquake simultaneously and move the ability of energy, reduce the earthquake as far as possible to stride away sliding fault tunnel lining cutting major structure's influence.
The utility model provides an above-mentioned technical problem adopted technical scheme as follows:
the utility model discloses an adopt buffer's slippage layer tunnel energy-absorbing shock-absorbing structure strides sets up in the slippage layer diastrophism influence scope is walked in the tunnel, characterized by: buffer devices are buried at intervals along the longitudinal direction of the tunnel at the two transverse sides of a tunnel primary supporting structure within the tunnel slippage fault dislocation influence range, each buffer device comprises a front baffle, a rear baffle and a buffer mechanism fixedly installed between the front baffle and the rear baffle, and the front baffle is connected with an anchoring device anchored into tunnel surrounding rock.
The tunnel primary support structure is characterized in that the buffer devices are arranged on the two transverse sides of the tunnel primary support structure at intervals along the longitudinal direction of the tunnel at equal intervals, and the distance between the adjacent buffer devices on the same side is 1-2 m.
The beneficial effects of the utility model are that:
the method has certain freedom degree, can adapt to different dislocation amounts among lining sections under fault dislocation, has certain capability of absorbing earthquake kinetic energy, and reduces the influence of an earthquake on a tunnel lining main body structure of a cross-sliding fault as far as possible;
secondly, the anchoring device can play a role in the condition that the tunnel is pulled and pressed at the same time, and the anchoring device plays a role of an anchor rod at the same time;
and thirdly, the energy absorption device can play a role repeatedly, is suitable for multiple times of dislocation, and absorbs energy step by step after the dislocation occurs, wherein the larger the dislocation is, the larger the energy absorption capacity is.
Drawings
The specification includes the following four figures:
fig. 1 is a schematic longitudinal section view of an energy-absorbing and shock-absorbing structure of a cross-sliding fault tunnel using a buffer device according to the present invention;
fig. 2 is a schematic cross-sectional view of an energy-absorbing and shock-absorbing structure of a cross-sliding tunnel using a buffer device according to the present invention;
fig. 3 is a schematic structural diagram of a buffering device in an energy-absorbing and shock-absorbing structure of a cross-sliding fault tunnel adopting the buffering device of the present invention;
fig. 4 is a schematic structural diagram of a thread energy absorber in a cross-sliding fault tunnel energy-absorbing shock-absorbing structure adopting a buffer device.
The figures show the main component names and the corresponding labels: the supporting structure comprises a primary supporting structure 10, a buffer device 20, a front baffle 21, a rear baffle 22, an anchoring device 23, a scissor-type telescopic rod 24, a thread energy absorber 25, a rear baffle bulge 26, a front baffle sleeve 27 and annular threads 28.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the utility model discloses an adopt buffer's slip fault tunnel energy-absorbing shock-absorbing structure strides sets up in slip fault dislocation influence range L is walked in the tunnel. Buffer devices are buried at intervals along the longitudinal direction of the tunnel at the two transverse sides of the tunnel primary supporting structure 10 within the tunnel slippage fault dislocation influence range L, each buffer device comprises a front baffle plate 21, a rear baffle plate 22 and a buffer mechanism fixedly installed between the front baffle plate 21 and the rear baffle plate 22, and the front baffle plate 21 is connected with an anchoring device 23 anchored into tunnel surrounding rocks. The front baffle 21 and the rear baffle 22 can move back and forth relatively through the buffer mechanism, the buffer mechanism plays a role in damping, impact on the lining when an earthquake occurs can be buffered, namely the buffer device has certain freedom degree, can adapt to different dislocation amounts among lining sections under fault dislocation, and simultaneously has certain earthquake kinetic energy absorption capacity, so that the influence of the earthquake on the main structure of the cross-sliding fault tunnel lining is reduced as much as possible.
Referring to fig. 1, in general, the primary tunnel supporting structure 10 has buffering devices buried at equal intervals in the longitudinal direction of the tunnel at both lateral sides thereof, and the distance between the adjacent buffering devices on the same side is 1 to 2 m.
Referring to fig. 3, the buffering mechanism includes a scissor type telescopic rod 24 and a thread energy absorber 25, and both ends of the scissor type telescopic rod 24 and the thread energy absorber 25 are respectively fixedly connected with the front baffle 21 and the rear baffle 22. The scissor-type telescopic rod 24 and the thread energy absorber 25 can simultaneously play a role under the conditions that the tunnel is pulled and pressed, and the anchoring device 23 simultaneously plays a role of an anchor rod. The energy absorption device can play a role repeatedly, is suitable for multiple times of dislocation, absorbs energy step by step after the dislocation occurs, and the bigger the dislocation is, the bigger the energy absorption capacity is.
Referring to fig. 4, the threaded energy absorber 25 is composed of a rear baffle projection 26 and a front baffle sleeve 27, a piston end of the rear baffle projection 26 is located in the front baffle sleeve 27, the inner wall of the front baffle sleeve 27 is provided with annular threads 28, and the distance between the annular threads 28 gradually decreases from the middle of the front baffle sleeve 27 to two sides. The height of the annular thread 28 is 0.5 to 1 cm. During the relative movement of the front baffle 21 and the rear baffle 22 caused by the movement of the ground, the thread energy absorber 25 displaces the rear baffle projection 26 to a certain extent and then breaks the annular thread 28 in the front baffle sleeve 27, thereby achieving the purpose of releasing energy. Typically, the front baffle sleeve 27 is cylindrical, has an outer diameter of 7 to 10cm and a thickness of 0.7 to 1.3 cm.
Referring to fig. 3, the front baffle 21 is a rectangular steel plate, the side length is 20-25 cm, and the thickness is 0.5-1.0 cm. The rear baffle 22 is close to the outer surface of the tunnel primary support structure 10, and the radian of the plate surface of the rear baffle is the same as that of the tunnel primary support structure 10 at the position; the rear baffle 22 is a rectangular bent steel plate, the side length is 25-35 cm, and the thickness is 0.5-1.0 cm.
The utility model relates to an adopt buffer's slip fault tunnel energy-absorbing shock-absorbing structure's construction method of striding as follows:
a. excavating a tunnel, reducing the tunnel excavation footage when the excavation enters the tunnel slip fault dislocation influence range L, and properly expanding and excavating to control the thickness of the tunnel primary support structure 10 so that the buffer device is embedded in the tunnel primary support structure 10;
b. laying a reinforcing mesh, installing a buffer device, anchoring an anchoring device 23 into the tunnel surrounding rock, and sequentially installing a front baffle 21, a buffer mechanism and a rear baffle 22.
c. And (3) spraying concrete to the tunnel surrounding rock until the sprayed concrete layer completely covers the buffer device, and finishing the construction of the tunnel primary supporting structure 10.
The above is only used for illustrating the utility model discloses an adopt buffer's some principles of striding across slip fault tunnel energy-absorbing shock-absorbing structure, not will the utility model discloses the limitation show with concrete structure and application scope in, so all corresponding amendments and equivalents that probably are utilized all belong to the utility model discloses the patent range who applies for.
Claims (7)
1. The utility model provides an adopt buffer's slip fault tunnel energy-absorbing shock-absorbing structure strides, sets up in tunnel slip fault dislocation influence scope (L), characterized by: buffer devices are buried at intervals along the longitudinal direction of the tunnel at the two transverse sides of a tunnel primary supporting structure (10) in the tunnel slippage fault dislocation influence range (L), each buffer device comprises a front baffle (21), a rear baffle (22) and a buffer mechanism fixedly installed between the front baffle and the rear baffle, and the front baffle (21) is connected with an anchoring device (23) anchored into tunnel surrounding rock.
2. The energy-absorbing and shock-absorbing structure of the cross-sliding fault tunnel adopting the buffer device as claimed in claim 1, is characterized in that: the tunnel primary support structure is characterized in that buffer devices are buried at intervals along the longitudinal direction of the tunnel at intervals on the two transverse sides of the tunnel primary support structure (10), and the distance between the adjacent buffer devices on the same side is 1-2 m.
3. The energy-absorbing and shock-absorbing structure of the cross-sliding fault tunnel adopting the buffer device as claimed in claim 1 or 2, which is characterized in that: the buffer mechanism comprises a scissor type telescopic rod (24) and a thread energy absorber (25), and the two ends of the scissor type telescopic rod (24) and the thread energy absorber (25) are respectively fixedly connected with the front baffle (21) and the rear baffle (22).
4. The energy-absorbing and shock-absorbing structure of the cross-sliding fault tunnel adopting the buffer device as claimed in claim 3, wherein: the thread energy absorber (25) is composed of a rear baffle boss (26) and a front baffle sleeve (27), the piston end of the rear baffle boss (26) is located in the front baffle sleeve (27), the inner wall of the front baffle sleeve (27) is provided with annular threads (28), and the distance between the annular threads (28) is gradually decreased from the middle part of the front baffle sleeve (27) to two sides.
5. The energy-absorbing and shock-absorbing structure of the cross-sliding fault tunnel adopting the buffer device as claimed in claim 4, wherein: the height of the annular thread (28) is 0.5-1 cm.
6. The energy-absorbing and shock-absorbing structure of the cross-sliding fault tunnel adopting the buffer device as claimed in claim 3, wherein: the front baffle (21) is a rectangular steel plate, the side length is 20-25 cm, and the thickness is 0.5-1.0 cm.
7. The energy-absorbing and shock-absorbing structure of the cross-sliding fault tunnel adopting the buffer device as claimed in claim 3, wherein: the rear baffle (22) is close to the outer surface of the primary tunnel supporting structure (10), and the radian of the plate surface of the rear baffle is the same as that of the primary tunnel supporting structure (10) at the position; the rear baffle (22) is a rectangular bent steel plate, the side length is 25-35 cm, and the thickness is 0.5-1.0 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022982434.XU CN214035683U (en) | 2020-12-10 | 2020-12-10 | Adopt buffer's slip fault tunnel energy-absorbing shock-absorbing structure strides |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022982434.XU CN214035683U (en) | 2020-12-10 | 2020-12-10 | Adopt buffer's slip fault tunnel energy-absorbing shock-absorbing structure strides |
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| CN214035683U true CN214035683U (en) | 2021-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530579A (en) * | 2021-08-25 | 2021-10-22 | 中煤北京煤矿机械有限责任公司 | Hydraulic support stand is with buffering energy-absorbing mechanism convenient to replacement |
-
2020
- 2020-12-10 CN CN202022982434.XU patent/CN214035683U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530579A (en) * | 2021-08-25 | 2021-10-22 | 中煤北京煤矿机械有限责任公司 | Hydraulic support stand is with buffering energy-absorbing mechanism convenient to replacement |
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