CN201771517U - Tunnel support structure - Google Patents
Tunnel support structure Download PDFInfo
- Publication number
- CN201771517U CN201771517U CN2010205087367U CN201020508736U CN201771517U CN 201771517 U CN201771517 U CN 201771517U CN 2010205087367 U CN2010205087367 U CN 2010205087367U CN 201020508736 U CN201020508736 U CN 201020508736U CN 201771517 U CN201771517 U CN 201771517U
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- support
- tunnel
- bow member
- reinforced mesh
- sprayed
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Abstract
The utility model relates to a tunnel support structure. The structure comprises a primary support and a molded lining, and is characterized in that: the primary support consists of an inner layer concrete-sprayed support and an outer layer concrete-sprayed support; the outer layer concrete-sprayed support is positioned on the surface of a tunnel; the inner layer concrete-sprayed support is positioned on the inner side of the outer layer concrete-sprayed support; and the molded lining is positioned on the inner side of the inner layer concrete-sprayed support. The structure has the characteristics of high rigidity, high load bearing capability and small deformation, can rapidly and effectively control the deformation of surrounding rock, greatly lowers load on the molded lining, ensures a safe and reliable structure, is particularly applicable to a deep depth karst tunnel crossing water-saturated filled karst cave section and can be applied to subway engineering or municipal engineering with poor geological conditions.
Description
Technical field
The utility model relates to a kind of tunnel support structure, is applicable to full water filling-type Karst cave location tunnel support, belongs to tunnel and underground engineering field.
Background technology
China's karst is grown, but lava is grown in the zone that accounts for national total area 13.5%, the construction of karst area deep-lying long tunnels may meet with full water filling-type Karst cave, because big, poor, the construction risk height of self-stable ability of water and soil pressure in the filling-type Karst cave, effective liner structure must be adopted, construction and operation security could be guaranteed.
The theoretical design of New Austrian Tunneling Method is still pressed at present full water filling-type Karst cave location tunnel preliminary bracing, and preliminary bracing is made of individual layer pneumatically placed concrete, system anchor bolt and built-in steelframe, is the flexible support system.But because solution-cavity filling thing self-stable ability is poor, system anchor bolt is difficult to bring into play its due effect, and preliminary bracing very easily produces distortion, cracking even causes landslide.
The utility model content
The purpose of this utility model is in order to solve the deficiency that the above-mentioned background technology exists, a kind of tunnel support structure that a kind of big rigidity, easy and simple to handle, short construction period are provided is provided, the problem of present solution-cavity filling thing section tunnel preliminary bracing insufficient rigidity, poor stability be can effectively solve, constructing tunnel and operation security guaranteed.
For achieving the above object, the utility model adopts following technical scheme: a kind of tunnel support structure, comprise preliminary bracing and moulded lining, it is characterized in that described preliminary bracing is made up of inside and outside two-layer shotcrete support, outer shotcrete support is positioned at tunnel surface, the internal layer shotcrete support is positioned at outer shotcrete support inboard, and moulded lining is positioned at internal layer shotcrete support inboard.
Preferably, described outer shotcrete support is made of reinforced mesh, steel bow member and sprayed mortar, and described reinforced mesh is positioned at skin, and the steel bow member is positioned at the reinforced mesh inner surface, the steel bow member is the steel work arched frame of equal thickness, and sprayed mortar is full of reinforced mesh and steel bow member.
Preferably, described internal layer shotcrete support is made of reinforced mesh, steel bow member and sprayed mortar, and described reinforced mesh is positioned at skin, and the steel bow member is positioned at the reinforced mesh inner surface, the steel bow member is the steel work arched frame of equal thickness, and sprayed mortar is full of reinforced mesh and steel bow member.
Preferably, the thickness of described inside and outside two-layer shotcrete support is respectively 25cm～30cm.
Preferably, described moulded lining is built steel concrete by mould and is constituted.
Preferably, between internal layer shotcrete support and moulded lining, be provided with waterproof and water drainage system.
This utility model has the following advantages with respect to prior art:
1) strengthens the rigidity of tunnel preliminary bracing significantly, can control surrouding rock deformation, prevent that the preliminary bracing distortion is excessive in full water filling-type Karst cave location.
2) cancelled the system anchor bolt of prior art scheme, simplified working procedure, made full use of construction of shotcrete characteristics fast, field conduct is easy.
3) internal layer sprayed mortar thickness, built-in steelframe pattern, spacing can be determined according to outer concrete spraying support distortion monitored results, and be with strong points, reaches purpose economically and reasonably.
4) the compound preliminary bracing rigidity of double-deck shotcrete support formation is big, and supporting capacity is strong, can reduce the load that moulded lining bears significantly, and moulded lining more economically.
Description of drawings
Fig. 1 the utility model schematic cross-sectional view.
Member shown in the figure, toponym and corresponding mark: outer reinforcement net 1, outer steel bow member 2, outer sprayed mortar 3, internal layer steel mesh reinforcement 4, internal layer steel bow member 5, internal layer sprayed mortar 6, waterproof and water drainage system 7, moulded lining 8.
The specific embodiment
Feature of the present utility model is described in further details by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Embodiment: present embodiment relates to the tunnel support structure that a kind of buried Karst Tunnel is passed through full water filling-type Karst cave location, comprises preliminary bracing and moulded lining 8, and described preliminary bracing is made up of inside and outside two-layer shotcrete support.
1) described outer shotcrete support is positioned at tunnel surface, constitutes the effect of playing quick supporting, stablizing weak surrounding rock by outer reinforcement net 1, outer steel bow member 2, outer sprayed mortar 3.The thickness of outer shotcrete support is 25cm～30cm.
2) described internal layer shotcrete support is positioned at outer shotcrete support inboard, is made of internal layer steel mesh reinforcement 4, internal layer steel bow member 5, internal layer sprayed mortar 6, plays the effect that adds strong supporting, with the preliminary bracing of the big rigidity of the compound formation of outer shotcrete support.The thickness of internal layer shotcrete support is 25cm～30cm.
3) internal layer shotcrete support thickness, steelframe pattern, spacing can be determined according to outer shotcrete support distortion monitored results.
4) according to wall rock condition and outer shotcrete support stability state, but internal layer shotcrete support branch or once apply.
5) described waterproof and water drainage system 7 prevents that underground water from infiltrating moulded lining between internal layer shotcrete support and moulded lining.
6) to be positioned at the internal layer shotcrete support the most inboard for described moulded lining 8, builds steel concrete by mould and constitute, and bears the country rock long duration load with the ectonexine shotcrete support.
The utlity model has the characteristics that rigidity is big, the bearing load ability is strong, distortion is little, can be fast, effective deformation controlling for rock surrounding gateways, reduce significantly the load that moulded lining bears, the assurance structural safety is reliable, be specially adapted to buried Karst Tunnel and pass through full water filling-type Karst cave location, also can be applicable to subway engineering or the municipal works of features as poor geologic condition.
Claims (6)
1. tunnel support structure, comprise preliminary bracing and moulded lining, it is characterized in that described preliminary bracing is made up of inside and outside two-layer shotcrete support, outer shotcrete support is positioned at tunnel surface, the internal layer shotcrete support is positioned at outer shotcrete support inboard, and moulded lining is positioned at internal layer shotcrete support inboard.
2. a kind of tunnel support structure according to claim 1, it is characterized in that: described outer shotcrete support is made of reinforced mesh, steel bow member and sprayed mortar, described reinforced mesh is positioned at skin, the steel bow member is positioned at the reinforced mesh inner surface, the steel bow member is the steel work arched frame of equal thickness, and sprayed mortar is full of reinforced mesh and steel bow member.
3. a kind of tunnel support structure according to claim 1, it is characterized in that: described internal layer shotcrete support is made of reinforced mesh, steel bow member and sprayed mortar, described reinforced mesh is positioned at skin, the steel bow member is positioned at the reinforced mesh inner surface, the steel bow member is the steel work arched frame of equal thickness, and sprayed mortar is full of reinforced mesh and steel bow member.
4. a kind of tunnel support structure according to claim 1 is characterized in that: the thickness of described inside and outside two-layer shotcrete support is respectively 25cm～30cm.
5. a kind of tunnel support structure according to claim 1 is characterized in that: described moulded lining is built steel concrete by mould and is constituted.
6. according at least one described a kind of tunnel support structure among the claim 1-5, it is characterized in that: between internal layer shotcrete support and moulded lining, be provided with waterproof and water drainage system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205087367U CN201771517U (en) | 2010-08-30 | 2010-08-30 | Tunnel support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205087367U CN201771517U (en) | 2010-08-30 | 2010-08-30 | Tunnel support structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201771517U true CN201771517U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205087367U Expired - Lifetime CN201771517U (en) | 2010-08-30 | 2010-08-30 | Tunnel support structure |
Country Status (1)
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| CN (1) | CN201771517U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182474A (en) * | 2011-05-10 | 2011-09-14 | 湖南省交通规划勘察设计院 | Reinforcing method for processing excessive deformation of primary support in tunnel construction |
| CN102200018A (en) * | 2011-05-10 | 2011-09-28 | 湖南省交通规划勘察设计院 | Bearing structure for reinforcing tunnel |
| CN102758632A (en) * | 2012-07-19 | 2012-10-31 | 中铁隧道集团有限公司 | Rock stratum double initial support layering method for establishing large-scale underground structure |
| CN103233749A (en) * | 2013-03-24 | 2013-08-07 | 中铁二院工程集团有限责任公司 | Large-span and heavy-load multi-layer open cut tunnel lining structure |
| CN103352708A (en) * | 2013-07-04 | 2013-10-16 | 浙江海洋学院 | Lining supporting device |
| CN103527219A (en) * | 2013-10-18 | 2014-01-22 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel supporting structure used for large deformation stratum and construction method of tunnel supporting structure |
| CN103670439A (en) * | 2013-12-10 | 2014-03-26 | 河北省电力勘测设计研究院 | Tunnel lining construction method |
| CN104533446A (en) * | 2015-01-16 | 2015-04-22 | 中交一公局第一工程有限公司 | Construction method and structure of two-layer preliminary support for preventing geological disaster of large-section weak surrounding rock tunnel |
| CN106096211A (en) * | 2016-07-08 | 2016-11-09 | 山东大学 | A kind of underground engineering confined concrete support system method for designing |
| CN108952783A (en) * | 2018-08-01 | 2018-12-07 | 中铁十九局集团第六工程有限公司 | A kind of dual supporting pre-embedded construction method in tunnel |
| CN109057821A (en) * | 2018-09-28 | 2018-12-21 | 浙江八达隧道工程股份有限公司 | Highway soft rock tunnel bilayer arch supporting construction system and its construction method |
| CN110593890A (en) * | 2019-08-16 | 2019-12-20 | 同济大学 | Tunnel corrugated steel double-layer primary lining supporting method and structure |
-
2010
- 2010-08-30 CN CN2010205087367U patent/CN201771517U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200018A (en) * | 2011-05-10 | 2011-09-28 | 湖南省交通规划勘察设计院 | Bearing structure for reinforcing tunnel |
| CN102182474A (en) * | 2011-05-10 | 2011-09-14 | 湖南省交通规划勘察设计院 | Reinforcing method for processing excessive deformation of primary support in tunnel construction |
| CN102758632A (en) * | 2012-07-19 | 2012-10-31 | 中铁隧道集团有限公司 | Rock stratum double initial support layering method for establishing large-scale underground structure |
| CN102758632B (en) * | 2012-07-19 | 2014-10-29 | 中铁隧道集团有限公司 | Rock stratum double initial support layering method for establishing large-scale underground structure |
| CN103233749A (en) * | 2013-03-24 | 2013-08-07 | 中铁二院工程集团有限责任公司 | Large-span and heavy-load multi-layer open cut tunnel lining structure |
| CN103352708A (en) * | 2013-07-04 | 2013-10-16 | 浙江海洋学院 | Lining supporting device |
| CN103352708B (en) * | 2013-07-04 | 2015-07-15 | 浙江海洋学院 | Lining supporting device |
| CN103527219B (en) * | 2013-10-18 | 2016-03-16 | 四川省交通运输厅公路规划勘察设计研究院 | For the construction of the tunnel support structure on large deformation stratum |
| CN103527219A (en) * | 2013-10-18 | 2014-01-22 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel supporting structure used for large deformation stratum and construction method of tunnel supporting structure |
| CN103670439A (en) * | 2013-12-10 | 2014-03-26 | 河北省电力勘测设计研究院 | Tunnel lining construction method |
| CN103670439B (en) * | 2013-12-10 | 2015-10-07 | 河北省电力勘测设计研究院 | Lining construction method |
| CN104533446A (en) * | 2015-01-16 | 2015-04-22 | 中交一公局第一工程有限公司 | Construction method and structure of two-layer preliminary support for preventing geological disaster of large-section weak surrounding rock tunnel |
| CN104533446B (en) * | 2015-01-16 | 2017-06-06 | 中交一公局第一工程有限公司 | Construction method and its structure that a kind of big cross section Support System in Soft Rock Tunnels bilayer pre- Geological disaster prevention of preliminary bracing occurs |
| CN106096211A (en) * | 2016-07-08 | 2016-11-09 | 山东大学 | A kind of underground engineering confined concrete support system method for designing |
| CN106096211B (en) * | 2016-07-08 | 2019-03-01 | 山东大学 | A kind of underground engineering confined concrete support system design method |
| CN108952783A (en) * | 2018-08-01 | 2018-12-07 | 中铁十九局集团第六工程有限公司 | A kind of dual supporting pre-embedded construction method in tunnel |
| CN109057821A (en) * | 2018-09-28 | 2018-12-21 | 浙江八达隧道工程股份有限公司 | Highway soft rock tunnel bilayer arch supporting construction system and its construction method |
| CN110593890A (en) * | 2019-08-16 | 2019-12-20 | 同济大学 | Tunnel corrugated steel double-layer primary lining supporting method and structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
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| CX01 | Expiry of patent term |