CN203175570U - Supporting and protecting structure in super-shallow buried weak surrounding rock tunnel construction - Google Patents
Supporting and protecting structure in super-shallow buried weak surrounding rock tunnel construction Download PDFInfo
- Publication number
- CN203175570U CN203175570U CN 201320066271 CN201320066271U CN203175570U CN 203175570 U CN203175570 U CN 203175570U CN 201320066271 CN201320066271 CN 201320066271 CN 201320066271 U CN201320066271 U CN 201320066271U CN 203175570 U CN203175570 U CN 203175570U
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- supporting
- tunnel
- secondary lining
- concrete
- waterproof layer
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Abstract
The utility model discloses a supporting and protecting structure in super-shallow buried weak surrounding rock tunnel construction. The supporting and protecting structure comprises a primary support, a composite waterproof layer and a secondary lining. The primary support comprises a plurality of crude rods, a reinforcing bar mesh piece and a concrete spraying layer, wherein the crude rods are perpendicular to the inner wall of a tunnel cave and embedded in a tunnel body, the reinforcing bar mesh piece is fixedly connected with the plurality of crude rods and covers the inner wall of the tunnel cave, the concrete spraying layer is located on the reinforcing bar mesh piece, and the composite waterproof layer is located between the concrete spraying layer and the secondary lining. The secondary lining is once formed in a pouring mode and forms a closed-force-ring concrete structure, and the concrete structure is provided with an upper arch portion which is located on the outer circle of the composite waterproof layer and a lower arch portion which is located under the level ground. According to the supporting and protecting structure, construction joints in the prior art are thoroughly eliminated, and therefore the problem of water seepage hidden dangers caused by the construction joints in the prior art is eradicated. Meanwhile, due to the fact that the upper arch portion and the lower arch portion form the closed-force-ring concrete structure, the supporting and protecting strength of the whole concrete structure is greatly improved.
Description
Technical field
The utility model relates to the tunnel construction technology field, relates to the supporting and protection structure in a kind of super shallow embedding Support System in Soft Rock Tunnels construction in particular.
Background technology
The tunnel is to build underground or under water and lay highway or railway, for the current building of locomotive motor vehicle.According to the difference of position, tunnel, the tunnel can be divided into mountain tunnel, submerged tunnel and city tunnel three major types; Wherein, this mountain tunnel is the tunnel for reducing the distance and avoiding steep gradient to pass through under the mountain ridge or the hills.For fear of the mountain ridge or the hills cave in, in the mountain tunnel work progress, all need be provided with supporting and protection structure, this supporting and protection structure is used for supporting the hole, tunnel, to guarantee constructor's construction safety.
At present, this supporting and protection structure generally comprises preliminary bracing, complex waterproof layer and secondary lining, this preliminary bracing has many hair bars, reinforced mesh and concrete jetted layers, these many hair bars are perpendicular to hole, tunnel inwall and be embedded in the tunnel body, this reinforced mesh is coated on the inwall of hole, tunnel and with many hair bars and all links to each other, and this concrete jetted layers is laid on the reinforced mesh; This complex waterproof layer is formed on the reinforced mesh and plays waterproof action; This secondary lining then has two short abutment walls and the arch between two short abutment walls, and these two short abutment walls are separately positioned on the left and right sides in hole, tunnel, and this secondary lining volume is used for withstanding preliminary bracing and prevents that the tunnel body from sinking.
But, because this arch and two short abutment walls are to construct respectively to form, so can form constuction joint inevitably between the short abutment wall of this arch and both sides, the existence of above-mentioned constuction joint namely can produce the hidden danger of seepage, and brings disadvantage factor for whole tunnel quality.
In view of this, the inventor has this case to produce at the above-mentioned defective further investigation of existing tunnel construction then.
The utility model content
The purpose of this utility model is to provide the supporting and protection structure in a kind of super shallow embedding Support System in Soft Rock Tunnels construction, to solve the problem that has the hidden danger that seeps water in the existing supporting and protection structure.
In order to reach above-mentioned purpose, solution of the present utility model is:
Supporting and protection structure in a kind of super shallow embedding Support System in Soft Rock Tunnels construction, comprise preliminary bracing, complex waterproof layer and secondary lining, this preliminary bracing has many perpendicular to hole, tunnel inwall and is embedded hair bar in the tunnel body, is fixedly linked with many hair bars and is coated on the reinforced mesh on the inwall of hole, tunnel and is positioned at concrete jetted layers on the reinforced mesh, and this complex waterproof layer is between concrete jetted layers and secondary lining; Wherein, this secondary lining is formed by integrally casting moulding and the concrete structure that forms a closing force ring, the following arch that this concrete structure has the last arch that is positioned at the complex waterproof layer outer ring and is positioned at the below, level ground.
After adopting said structure, supporting and protection structure in a kind of super shallow embedding Support System in Soft Rock Tunnels construction that the utility model relates to, it is owing to adopt the formed by integrally casting moulding, so make to go up between arch and the following arch and can realize seamless link, thoroughly eliminate constuction joint of the prior art, thereby stopped prior art causes infiltration hidden danger because of above-mentioned constuction joint problem.In addition, the arch forms a closing force ring with following arch because this concrete structure is served as reasons upward, has so improved the supporting intensity of whole concrete structure greatly.
Description of drawings
Fig. 1 is the structural representation of the supporting and protection structure in the utility model relates to a kind of super shallow embedding Support System in Soft Rock Tunnels construction;
Fig. 2 relates to the schematic diagram of supporting and protection structure for construction the utility model.
Among the figure:
Supporting and protection structure 100 preliminary bracings 1
Hair bar 11 reinforced mesh 12
Concrete jetted layers 13 complex waterproof layers 2
The arch 31 on the secondary lining 3
Following arch 32 chassis 200
The specific embodiment
In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.
As shown in Figure 1, supporting and protection structure 100 during its a kind of super shallow embedding Support System in Soft Rock Tunnels that relates to for the utility model is constructed, comprise preliminary bracing 1, complex waterproof layer 2 and secondary lining 3, this preliminary bracing 1 has many hair bars 11, reinforced mesh 12 and concrete jetted layers 13, these many hair bars 11 are perpendicular to hole, tunnel inwall and be embedded in the tunnel body, this reinforced mesh 12 is fixedly linked with many hair bars 11 and is coated on the inwall of hole, tunnel, this concrete jetted layers 13 is positioned on the reinforced mesh 12, and this complex waterproof layer 2 is between concrete jetted layers 13 and secondary lining 3.
Improvements of the present utility model are: this secondary lining 3 is formed by integrally casting moulding and the concrete structure that forms a closing force ring, this concrete structure has last arch 31 and following arch 32, should go up arch 31 and be positioned at complex waterproof layer 2 outer rings, this time arch 32 is positioned at the below of level ground.So, can form a closing force ring between arch 31 and the following arch 32 on this, and then improve the supporting intensity of whole concrete structure greatly.
The supporting and protection structure 100 that the utility model relates to, owing to adopt the formed by integrally casting moulding, so make to go up between arch 31 and the following arch 32 and can realize seamless link, thoroughly eliminated constuction joint of the prior art, thereby stop prior art causes infiltration hidden danger because of above-mentioned constuction joint problem.
As shown in Figure 2, in order to allow this secondary lining 3 be continued construction, the chassis 200 of processing above-mentioned secondary lining 3 comprises rotor plate 210 and cylinder 220, these rotor plate 210 1 ends are articulated on the forming panel, the other end links to each other with the piston rod of cylinder 220, so after 3 constructions of current secondary lining are finished, under the drive of cylinder 220, this rotor plate 210 can rotate, and then avoided conflict between rotor plate 210 and the ground, guaranteed that the secondary lining 3 of integral type can be processed comes out.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.
Claims (1)
1. the supporting and protection structure during a super shallow embedding Support System in Soft Rock Tunnels is constructed, comprise preliminary bracing, complex waterproof layer and secondary lining, this preliminary bracing has many perpendicular to hole, tunnel inwall and is embedded hair bar in the tunnel body, is fixedly linked with many hair bars and is coated on the reinforced mesh on the inwall of hole, tunnel and is positioned at concrete jetted layers on the reinforced mesh, and this complex waterproof layer is between concrete jetted layers and secondary lining; It is characterized in that this secondary lining is formed by integrally casting moulding and the concrete structure that forms a closing force ring, the following arch that this concrete structure has the last arch that is positioned at the complex waterproof layer outer ring and is positioned at the below, level ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320066271 CN203175570U (en) | 2013-02-05 | 2013-02-05 | Supporting and protecting structure in super-shallow buried weak surrounding rock tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320066271 CN203175570U (en) | 2013-02-05 | 2013-02-05 | Supporting and protecting structure in super-shallow buried weak surrounding rock tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203175570U true CN203175570U (en) | 2013-09-04 |
Family
ID=49072285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320066271 Expired - Fee Related CN203175570U (en) | 2013-02-05 | 2013-02-05 | Supporting and protecting structure in super-shallow buried weak surrounding rock tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203175570U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670446A (en) * | 2013-12-13 | 2014-03-26 | 中铁二十三局集团有限公司 | Method for constructing circular diversion tunnel 2/3 circular concrete lining |
| CN104047610A (en) * | 2014-05-30 | 2014-09-17 | 甘肃省交通规划勘察设计院有限责任公司 | Composite lining structure |
-
2013
- 2013-02-05 CN CN 201320066271 patent/CN203175570U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670446A (en) * | 2013-12-13 | 2014-03-26 | 中铁二十三局集团有限公司 | Method for constructing circular diversion tunnel 2/3 circular concrete lining |
| CN103670446B (en) * | 2013-12-13 | 2016-03-23 | 中铁二十三局集团有限公司 | Circular diversion tunnel 2/3 circle concrete-liner construction method |
| CN104047610A (en) * | 2014-05-30 | 2014-09-17 | 甘肃省交通规划勘察设计院有限责任公司 | Composite lining structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20160205 |