CN204371354U - The compound supporting and protection structure of a kind of Karst Tunnel - Google Patents
The compound supporting and protection structure of a kind of Karst Tunnel Download PDFInfo
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- CN204371354U CN204371354U CN201420783205.7U CN201420783205U CN204371354U CN 204371354 U CN204371354 U CN 204371354U CN 201420783205 U CN201420783205 U CN 201420783205U CN 204371354 U CN204371354 U CN 204371354U
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- karst
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Abstract
The utility model relates to a kind of tunnel support structure, be specifically related to a kind of Karst Tunnel construction supporting structure, comprise the karst chamber being present in tunnel surrounding, the molten chamber backfill injected in karst chamber by grouted anchor bar, this is outside equipped with cushion coat, can cushion block impact force and pressure from surrounding rock, is also provided with steel arch-shelf and secondary lining as rigid protection, be provided with the layer that discharges water between secondary lining and cushion coat, ensure the waterproof effect in tunnel.Compared with traditional supporting and protection structure, the utility model is provided with grouted anchor bar can realize backfill to karst chamber, and be provided with cushion coat, buffering falls block impact force and pressure from surrounding rock, and the steel arch-shelf of setting and secondary lining provide effective rigid protection.
Description
Technical field
The utility model relates to a kind of constructing tunnel supporting and protection structure, particularly relates to the supporting and protection structure in the construction of a kind of Karst Tunnel.
Background technology
Karst refers to the various corrosion phenomenon such as earth's surface cratering, depression, cavern that solubility rock stratum is subject to the chemical erosion of surface water or underground water, the effect of calving disaggregation and mechanical damage, carrying and deposition etc. produces.Karst features are widely distributed in China mountain area according to statistics.
Along with the development of China's communication and the constantly perfect of highway network, speedway construction process jackshaft tunnel is than constantly increasing, especially the scale of building in tunnel is swift and violent especially, therefore inevitably have a large amount of Karst Tunnel to need to build, in the expressway construction process of the Sanmenxia Gorge, Henan Province to Xichuan, the tunnel construction safety problem that karst causes is a puzzlement technician's difficult problem always.When tunnel in construction process through the rock stratum of solubility time, the rock matter around solution cavity is broken, easily causes the unstability of country rock, and then causes and cave in.When solution cavity is positioned at tunnel bottom, charges are soft and dark, make Tunnel Base be difficult to process.The charges fluid bowl filling up saturated with water had, when tunnel Denver Nuggets is to its edge, moisture charges constantly will pour in tunnel, are difficult to check, and even make earth surface cracks sink disasters such as () the even generation earth subsidences had; What have is connected with underground river, and karst water or silt folder water pour in tunnel, and then cause the disasters such as prominent mud water burst, very harmful.Karst is on the impact of construction of tunnel, the water burst that mainly karst water, Cave and charges thereof etc. cause in constructing tunnel process dash forward mud, large deformation and cave in, top board solution-cavity filling thing subsides roof fall and base plate subsides and impact on cienega, carrying out the supporting measure in Karst Tunnel work progress, is all have ineffable meaning for constructing tunnel process or the operation after building up.
At present, there is certain achievement in research in China in Karst Tunnel construction supporting, such as propose the technical measures such as Shed-pipe Advanced Support slip casting, achieve certain effect, but this technical measures all have certain limitation in cost control or at the scene in enforcement, also need to be probed into further for its applicability of the water-soluble chamber of richness, generally speaking, current China needs perfect further in the construction supporting of Karst Tunnel.
Utility model content
In order to solve the deficiency existed in background technology further, the utility model provides a kind of Karst Tunnel construction supporting structure, improves the deficiency that Karst Tunnel construction supporting exists further.
To achieve these goals, the utility model by the following technical solutions: a kind of Karst Tunnel construction supporting structure, is characterized in that comprising tunnel surrounding, karst chamber, grouted anchor bar, cushion coat, steel arch-shelf, waterproofing course, cast concrete lining cutting.Karst chamber is arranged in tunnel surrounding, and position is not fixing, and may be positioned at tunnel upper and may be positioned at the left and right sides, tunnel, certain threat is caused to constructing tunnel in karst chamber; Grouted anchor bar adopts Self-propelling grouting anchoring-bolt, can realize the grouting and reinforcing to Tunnel Karst chamber, forms grouting reinforced region, improves supporting capacity; Cushion coat can carry out cushioning effect to huge pressure from surrounding rock, and In Karst Tunnel inevitably exists cavitation, arrange cushion coat can also prevent cavity fall block scene destruction is impacted to concrete lining; Waterproofing course has good waterproof action, integrated with the waterproof and water drainage system in tunnel, guarantees that country rock water can be discharged smoothly; Steel arch-shelf and cast concrete lining cutting form rigid protection, and the pressure from surrounding rock after opposing cushion coat buffering, ensures tunnel safety.
Compared with prior art, the utility model has following beneficial effect:
The utility model comprises grouted anchor bar and cushion coat, grouted anchor bar is arranged along full section of tunnel, can realize grouting and reinforcing to country rock around tunnel, no matter is where karst chamber is positioned at tunnel, as long as affecting within tunnel stabilization scope, all slip casting backfill can carried out by grouted anchor bar; Grouted anchor bar is hollow in addition, and arranging grouted anchor bar can also discharge water to the water-soluble chamber of richness, and reduce the impact that water pressure is brought, then carry out slip casting backfill, its slip casting effect is better; The cushion coat that the utility model is arranged has cushioning effect, can cushion the huge pressure from surrounding rock of country rock to lining cutting effect on the one hand, can cushion karst chamber on the other hand and owing to falling the impact load of block effect, thus may form protective effect to lining cutting.
The utility model is provided with waterproofing course, there is waterproof action, drainage system conventionally applies, guarantee the guarded drainage work carrying out In Karst Tunnel, arrange steel arch-shelf at cushion coat and lining concrete, steel arch-shelf and lining concrete form rigid protection jointly, provide important carrying effect, wherein steel arch-shelf can adopt i iron, and lining concrete adopts one piece to build shaping method and implements.
The utility model structure is simply real, and it is convenient to implement, and wide accommodation, is not intended for a certain specific Karst Tunnel, can reinforce adjoining rock and the molten chamber of backfill by the slip casting of grouted anchor bar, and working security is higher, and the utility model has good application prospect.
Accompanying drawing explanation
Fig. 1 the utility model schematic diagram
Wherein: 1-tunnel surrounding, 2-karst chamber, 3-molten chamber backfill, 4-grouted anchor bar, 5-cushion coat, 6-steel arch-shelf, 7-waterproofing course, 8-secondary lining.
Detailed description of the invention
In order to explain the utility model further, be further described below in conjunction with accompanying drawing:
See Fig. 1, the compound supporting and protection structure of a kind of Karst Tunnel comprises tunnel surrounding (1), karst chamber (2), molten chamber backfill (3), grouted anchor bar (4), cushion coat (5), steel arch-shelf (6), waterproofing course (7), secondary lining (8).Karst chamber (2) has not stationarity, any position of tunnel surrounding (1) may be present in, grouted anchor bar (4) is arranged along tunnel perimeter, realizes backfilling the slip casting of karst chamber (2) as far as possible, and is that molten chamber backfill (3) in karst chamber (2) backfills closely knit as far as possible.
Cushion coat (5) is arranged between tunnel surrounding (1) and secondary lining (8), play cushioning effect, cushion huge pressure from surrounding rock on the one hand, cushion the impact force that block formation is fallen in molten chamber on the other hand, the utility model is also provided with steel arch-shelf (6) and secondary lining (8), both provide main bearing capacity as rigid protection structure.
Concrete implementation step of the present utility model:
Step one: pass through karst region by the mode determination tunnel of advance geologic prediction, determine the supporting and protection structure adopting a kind of Karst Tunnel of the present utility model;
Step 2: after tunnel surrounding (1) excavation, set up interim protective frame, after provisional protection frame has been constructed, carries out the construction operation of the peripheral protection by truss frame basis of tunnel lining and tunnel foundation process;
Step 3: apply cushion coat (5), can adopt the method for sprayed mortar to carry out;
Step 4: apply grouted anchor bar (4), and grouting and reinforcing backfill is carried out to tunnel surrounding (1) and karst chamber (2), guarantee that karst chamber (2) backfills closely knit as far as possible;
Step 5: erection steel arch-shelf (6), surface can flatten by sprayed mortar, then applies waterproofing course (7), and damaging it of one deck Geotextile construction secondary lining (8) is laid on waterproofing course surface;
Step 6: monobloc cast second coagulation soil lining cutting after completing, institute, in steps as a systemic circulation, constructs according to circulation.
It should be noted that Karst Tunnel construction has very large difficulty, digging process temporary lining measure should be taked proper, and permanent support measure also should be reasonable, ensures that the backfill of karst chamber is closely knit during slip casting as far as possible; Will strengthen monitoring measurement in this external work progress, timely feedback information, further optimizes supporting measure according to monitoring result.
Claims (5)
1. the compound supporting and protection structure of Karst Tunnel, is characterized in that, comprises tunnel surrounding (1), karst chamber (2), molten chamber backfill (3), grouted anchor bar (4), cushion coat (5), steel arch-shelf (6), waterproofing course (7) and secondary lining (8); Described tunnel surrounding (1) is from inside to outside disposed with cushion coat (5), steel arch-shelf (6), waterproofing course (7) and secondary lining (8); Be distributed with karst chamber (2) in described tunnel surrounding (1), karst chamber (2) backfill molten chamber backfill (3) by grouted anchor bar (4).
2. the compound supporting and protection structure of a kind of Karst Tunnel according to claim 1, is characterized in that, described karst chamber (2) realizes slip casting by grouted anchor bar (4), and what described molten chamber backfill (3) adopted is cement-water glass mixed serum.
3. the compound supporting and protection structure of a kind of Karst Tunnel according to claim 1, is characterized in that, described grouted anchor bar (4) is hollow, and the body of rod is with injected hole.
4. the compound supporting and protection structure of a kind of Karst Tunnel according to claim 1, is characterized in that, what described cushion coat (5) adopted is C20 sprayed mortar.
5. the compound supporting and protection structure of a kind of Karst Tunnel according to claim 1, is characterized in that, described secondary lining (8) adopts plain concrete monobloc cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783205.7U CN204371354U (en) | 2014-12-14 | 2014-12-14 | The compound supporting and protection structure of a kind of Karst Tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783205.7U CN204371354U (en) | 2014-12-14 | 2014-12-14 | The compound supporting and protection structure of a kind of Karst Tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371354U true CN204371354U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420783205.7U Expired - Fee Related CN204371354U (en) | 2014-12-14 | 2014-12-14 | The compound supporting and protection structure of a kind of Karst Tunnel |
Country Status (1)
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| CN (1) | CN204371354U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178979A (en) * | 2015-08-28 | 2015-12-23 | 中铁二十五局集团第四工程有限公司 | Supporting structure of tunnel in bias salt cavity environment and construction method of supporting structure |
| CN106401600A (en) * | 2016-10-28 | 2017-02-15 | 招商局重庆交通科研设计院有限公司 | Tunnel strengthening treatment method and support structure based on positions of dissolving cavities |
| CN106504630A (en) * | 2016-10-28 | 2017-03-15 | 招商局重庆交通科研设计院有限公司 | Pass through the tunnel experiment system of karst strata |
| CN108331595A (en) * | 2018-01-08 | 2018-07-27 | 深圳市东进技术服务有限公司 | One kind is soft to mould the body Karst Tunnel reinforcement process that caves in |
| CN108547643A (en) * | 2018-03-21 | 2018-09-18 | 中南大学 | A kind of construction method for handling tunnel top large size cavity solution cavity shield arch |
| CN108678776A (en) * | 2018-03-29 | 2018-10-19 | 中交路桥北方工程有限公司 | Sandy clay geology tunnel treatment of roof collapse method |
| CN109356650A (en) * | 2017-10-25 | 2019-02-19 | 中国矿业大学 | A method of compressed-air energy storage is carried out using coal mine down-hole tunnel |
| CN111396089A (en) * | 2020-04-21 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Open-cut tunnel lining structure passing through giant karst cave and construction method thereof |
| CN112696211A (en) * | 2021-01-18 | 2021-04-23 | 中国电建集团成都勘测设计研究院有限公司 | Karst tunnel supporting construction and transport mechanism for construction thereof |
| CN112709585A (en) * | 2020-12-30 | 2021-04-27 | 山东交通学院 | Blocking device and method for preventing mud outburst and water inrush of tunnel |
-
2014
- 2014-12-14 CN CN201420783205.7U patent/CN204371354U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178979A (en) * | 2015-08-28 | 2015-12-23 | 中铁二十五局集团第四工程有限公司 | Supporting structure of tunnel in bias salt cavity environment and construction method of supporting structure |
| CN106401600A (en) * | 2016-10-28 | 2017-02-15 | 招商局重庆交通科研设计院有限公司 | Tunnel strengthening treatment method and support structure based on positions of dissolving cavities |
| CN106504630A (en) * | 2016-10-28 | 2017-03-15 | 招商局重庆交通科研设计院有限公司 | Pass through the tunnel experiment system of karst strata |
| CN106401600B (en) * | 2016-10-28 | 2018-04-13 | 招商局重庆交通科研设计院有限公司 | Strengthen Treatment Methods and supporting construction in tunnel based on molten chamber position |
| CN109356650B (en) * | 2017-10-25 | 2021-03-26 | 中国矿业大学 | Method for storing energy by utilizing compressed air in underground coal mine roadway |
| CN109356650A (en) * | 2017-10-25 | 2019-02-19 | 中国矿业大学 | A method of compressed-air energy storage is carried out using coal mine down-hole tunnel |
| CN108331595A (en) * | 2018-01-08 | 2018-07-27 | 深圳市东进技术服务有限公司 | One kind is soft to mould the body Karst Tunnel reinforcement process that caves in |
| CN108547643A (en) * | 2018-03-21 | 2018-09-18 | 中南大学 | A kind of construction method for handling tunnel top large size cavity solution cavity shield arch |
| CN108547643B (en) * | 2018-03-21 | 2019-09-13 | 中南大学 | A kind of construction method encircleed for handling tunnel top large size cavity solution cavity shield |
| CN108678776A (en) * | 2018-03-29 | 2018-10-19 | 中交路桥北方工程有限公司 | Sandy clay geology tunnel treatment of roof collapse method |
| CN111396089A (en) * | 2020-04-21 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Open-cut tunnel lining structure passing through giant karst cave and construction method thereof |
| CN112709585A (en) * | 2020-12-30 | 2021-04-27 | 山东交通学院 | Blocking device and method for preventing mud outburst and water inrush of tunnel |
| CN112709585B (en) * | 2020-12-30 | 2022-06-07 | 山东交通学院 | Blocking device and method for preventing mud outburst and water inrush of tunnel |
| CN112696211A (en) * | 2021-01-18 | 2021-04-23 | 中国电建集团成都勘测设计研究院有限公司 | Karst tunnel supporting construction and transport mechanism for construction thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liang Mingbo Inventor after: Dong Haiwei Inventor after: Wang Qi Inventor after: Meng Jiangtao Inventor after: Tan Tao Inventor after: Hu Bin Inventor before: Zhang Yi Inventor before: Wang Qi Inventor before: Zhang Yuwei Inventor before: Meng Jiangtao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG YI WANG QI ZHANG YUWEI MENG JIANGTAO TO: LIANG MINGBO DONG HAIWEI WANG QI MENG JIANGTAO TAN TAO HU BIN |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20161214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |