CN201705364U - Full-closed integral type lining structure of tunnel in coal-seam gob area - Google Patents
Full-closed integral type lining structure of tunnel in coal-seam gob area Download PDFInfo
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- CN201705364U CN201705364U CN2010202421110U CN201020242111U CN201705364U CN 201705364 U CN201705364 U CN 201705364U CN 2010202421110 U CN2010202421110 U CN 2010202421110U CN 201020242111 U CN201020242111 U CN 201020242111U CN 201705364 U CN201705364 U CN 201705364U
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Abstract
The utility model discloses a full-closed integral type lining structure of a tunnel in a coal-seam gob area, comprising an integral type secondary lining; a gas segregation board is laid between the integral type secondary lining and a primary support structure and is provided with a water-gas separating device; a chain-type water-stopping belt is arranged on a circular construction joint of a construction tunnel; the arch part, the middle parts and the bottom parts of the left side and the right side of the integral type secondary lining are respectively provided with a plurality of reinforcing bars for carrying out opposite-pull reinforcement on the integral type secondary lining; the distributing positions of the reinforcing bars correspond to that of the distributed coal-seam gob areas at the peripheral sides of the tunnel excavating section of the construction tunnel; and the integral type secondary lining and the gas segregation board form the full-closed integral type lining structure. The full-closed integral type lining structure has the advantages of reasonable design, simple structure, convenient construction, good use effect, safety and reliability, can effectively prevent gas reserved in the coal-seam gob area in the process of tunnel construction and tunnel operation from entering the tunnel, and reduce the potential safety hazard in the process of tunnel construction and tunnel operation.
Description
Technical field
The utility model tunnel construction technology field especially relates to the totally-enclosed integral tunnel lining structure in a kind of coal seam goaf tunnel.
Background technology
At present, domestic at the gas tunnel construction party in the face of how preventing and treating the existing many successful precedents of gas outstanding problem, it is ripe that construction technology has become.Aspect coal seam goaf, domestic also have at goaf different size size and when the different distance of tunnel top to the correlative study of safety for tunnel engineering influence degree and correlation.But, concentrate many gas tunnels and every tunnel that the situation of coal seam goaf and coal cutting roadway is all arranged, its difficulty of construction and scale are all very big, thereby need adopt multiple leading geophysical prospecting method simultaneously and take gas prevention corresponding with it, tunnel structure reinforcement measure etc. that comprehensive improvement is carried out in the goaf.
At first, the coal seam goaf characteristics are analyzed, because coal cutting roadway of being hidden in the tunnel, goaf and goaf normal conditions are all discarded for many years, and nonstandard spontaneous disorderly the adopting disorderly in these sides, many possessions, tunnel dug, through the inbreak of having collapsed mostly of weathering all the year round, add the part hand packing, how coal cutting roadway and goaf are stopped up, design exploration difficulty is bigger, is difficult to during exploration accurately judge.According to explored goaf and coal cutting roadway situation, above-mentioned tunnel is divided into track plan intersects and two kinds of graded crossing, and three-dimensionally intersect two kinds of situations of facade intersection that the level of having living space is intersected and coal road is tiltedly worn the tunnel from top to bottom.
During practice of construction, coal seam goaf is bigger to the harmfulness of tunnel structure, because coal seam goaf has collapsibility and non-regularity, no matter its be positioned at the tunnel vault still be at the bottom of the tunnel below, the capital causes tunnel structure unbalance stress and corresponding generation differential settlement because of its existence, thereby,, finally jeopardize the circuit operation security if effectively do not handle to tunnel structure safety and stable formation harm.Its harmfulness be mainly reflected in following some:
The first, goaf, arch: the harmfulness in goaf, arch mainly is the goaf filling thing and unminds coal column and the time emit to fall behind at excavation and form high free face, not slough after the tunnel structure moulding because of being shaken the harm of impact load that slump produces to structure, the brute force of relatively large stone is impacted and may be caused the concrete fission landslide of arch, tunnel, jeopardizes the circuit operation security.The harm of this type often can not thoroughly be handled, have only by adding strong supporting and secondary lining, and supporting arch outer rim setting in the early stage protects arch and prevent with fluffing of moulding sand cushion coat, its harmfulness also is embodied in the Safety Effect of construction period, strengthened difficulty of construction, thereby the extent of injury is very high.
The second, goaf at the bottom of the tunnel: its harmfulness mainly is that bearing stratum at the bottom of the tunnel (be at the bottom of the inverted arch and between goaf top plate depth of stratum) allows minimum bearing stratum thick less than structural safety, being subjected to external force to influence depression under the state of coming to nothing makes the tunnel structure part unbalance, cause structure to be destroyed by drawing crack because of differential settlement, jeopardize railway operation safety, and its potential hazard is quite serious.
Three, goaf, middle part: this type goaf is for tunnel structure, though the existence in goaf can make its roof rock distortion sedimentation and cause the lateral stress distortion that tunnel surrounding is certain, but can not destroy the overall structure in tunnel comparatively speaking, thereby its extent of injury is lower, and strengthening measure can guarantee.
But, the high tunnel preliminary bracing system of a kind of reasonable in design and safety factor nowadays also do not occur, and can thoroughly, effectively solve the safe construction and the safe operation problem of coal seam goaf areal concentration territory inner tunnel.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, provide a kind of coal seam goaf tunnel totally-enclosed integral tunnel lining structure, it is reasonable in design, simple in structure, easy construction and result of use are good, safe and reliable, the methane gas that can effectively stop to retain in the coal seam goaf in constructing tunnel and the tunnel running enters in the hole, tunnel, has reduced the potential safety hazard in constructing tunnel and the tunnel running.
For solving the problems of the technologies described above; the technical solution adopted in the utility model is: the totally-enclosed integral tunnel lining structure in a kind of coal seam goaf tunnel; it is characterized in that: comprise the structural monolithic secondary lining of the preliminary bracing that is laid in construction tunnel; be equipped with the gas division board between described monolithic secondary lining and the preliminary bracing structure; described gas division board is provided with moisture separator; and the hoop constuction joint of construction tunnel is provided with the chain type waterstop; the arch of described monolithic secondary lining; middle part, the left and right sides and bottom inside are provided with and are used for the monolithic secondary lining is carried out drawing many arrangements of reinforcement of reinforcing; the position of coal seam goaf that side distributes is corresponding around the tunnel excavation section of the installation position of described arrangement of reinforcement and construction tunnel, and monolithic secondary lining and be laid on totally enclosed type liner structure that construction tunnel is carried out close and protect of its inboard gas division board composition.
The thickness of described monolithic secondary lining is 50cm ± 5cm.
Described preliminary bracing structure is anchor net spray combined supporting structure.
Used anchor pole is that diameter is that Φ 25mm and length are the hollow grouting anchor of 3.5 ± 0.3m in the described anchor net spray combined supporting structure.
The upper and lower end parts of described arrangement of reinforcement is separately fixed on the inside and outside both sides sidewall of monolithic secondary lining, and many described arrangements of reinforcement all carry out integral reinforcing from inside and outside both sides to the monolithic secondary lining.
The utility model compared with prior art has the following advantages:
1, reasonable in design, simple in structure and construction cost is low, construction sequence is simple, and it is convenient to realize.
2, result of use is good; adopt one-shot forming in the monolithic Second Lining Construction process and form the integrated secondary liner structure; the monolithic secondary lining is formed a totally enclosed type liner structure that construction tunnel is carried out close and protect in conjunction with being laid on its inboard gas division board more simultaneously; the methane gas that then can effectively stop to retain in the coal seam goaf in constructing tunnel and the tunnel running enters in the hole, tunnel, brings potential safety hazard then.Simultaneously,, after separating earlier the air-water mixture that coal seam goaf retains like this, thoroughly isolate by methane gas and waterstop again and handle because the gas division board is provided with moisture separator, thereby the practical value height, safe and reliable.
3, be provided with the many arrangements of reinforcement that the monolithic secondary lining carried out integral reinforcing from inside and outside both sides in the monolithic secondary lining, especially in the arch of tunnel excavation section, the zone of the corresponding coal seam goaf in middle part and bottom, thereby further guaranteed the globality and the closure of secondary lining.
4, speed of application is fast, and the construction period is short and application value is high, can promote to be suitable for to the practice of construction process in relevant coal seam goaf tunnel.
In sum, the utility model is reasonable in design, simple in structure, easy construction and result of use are good, safe and reliable, the methane gas that can effectively stop to retain in the coal seam goaf in constructing tunnel and the tunnel running enters in the hole, tunnel, thereby can thoroughly solve the safe construction and the safe operation problem of coal seam goaf areal concentration territory inner tunnel.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the installation position schematic diagram of the inner set arrangement of reinforcement of the utility model.
Description of reference numerals:
The 1-construction tunnel; 2-preliminary bracing structure; 3-monolithic secondary lining;
The 4-arrangement of reinforcement; The 5-hollow grouting anchor; 6-gas division board.
The specific embodiment
As Fig. 1; shown in Figure 2; the utility model comprises the monolithic secondary lining 3 on the preliminary bracing structure 2 that is laid in construction tunnel 1; be equipped with gas division board 6 between described monolithic secondary lining 3 and the preliminary bracing structure 2; described gas division board 6 is provided with moisture separator; and the hoop constuction joint of construction tunnel 1 is provided with the chain type waterstop; the arch of described monolithic secondary lining 3; middle part, the left and right sides and bottom inside are provided with and are used for monolithic secondary lining 3 is carried out drawing the many arrangements of reinforcement 4 of reinforcing; the position of coal seam goaf that side distributes is corresponding around the tunnel excavation section of the installation position of described arrangement of reinforcement 4 and construction tunnel 1, and monolithic secondary lining 3 and be laid on totally enclosed type liner structure that construction tunnel 1 is carried out close and protect of its inboard gas division board 6 compositions.The upper and lower end parts of described arrangement of reinforcement 4 is separately fixed on the inside and outside both sides sidewall of monolithic secondary lining 3, and many described arrangements of reinforcement 4 all carry out integral reinforcing from inside and outside both sides to monolithic secondary lining 3.
In the present embodiment, the thickness of described monolithic secondary lining 3 is 50cm ± 5cm.Described preliminary bracing structure 2 is anchor net spray combined supporting structure.Used anchor pole is that diameter is that Φ 25mm and length are the hollow grouting anchor 5 of 3.5 ± 0.3m in the described anchor net spray combined supporting structure.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (5)
1. totally-enclosed integral tunnel lining structure in coal seam goaf tunnel; it is characterized in that: comprise the monolithic secondary lining (3) on the preliminary bracing structure (2) that is laid in construction tunnel (1); be equipped with gas division board (6) between described monolithic secondary lining (3) and the preliminary bracing structure (2); described gas division board (6) is provided with moisture separator; and the hoop constuction joint of construction tunnel (1) is provided with the chain type waterstop; the arch of described monolithic secondary lining (3); middle part, the left and right sides and bottom inside are provided with and are used for monolithic secondary lining (3) is carried out drawing the many arrangements of reinforcement (4) of reinforcing; the position of coal seam goaf that side distributes is corresponding around the tunnel excavation section of the installation position of described arrangement of reinforcement (4) and construction tunnel (1), and monolithic secondary lining (3) and be laid on totally enclosed type liner structure that construction tunnel (1) is carried out close and protect of its inboard gas division board (6) composition.
2. according to the totally-enclosed integral tunnel lining structure in the described coal seam goaf of claim 1 tunnel, it is characterized in that: the thickness of described monolithic secondary lining (3) is 50cm ± 5cm.
3. according to the totally-enclosed integral tunnel lining structure of claim 1 or 2 described coal seam goaf tunnels, it is characterized in that: described preliminary bracing structure (2) is anchor net spray combined supporting structure.
4. according to the totally-enclosed integral tunnel lining structure in the described coal seam goaf of claim 3 tunnel, it is characterized in that: used anchor pole is that diameter is that 25mm and length are the hollow grouting anchor (5) of 3.5 ± 0.3m in the described anchor net spray combined supporting structure.
5. according to the totally-enclosed integral tunnel lining structure of claim 1 or 2 described coal seam goaf tunnels, it is characterized in that: the upper and lower end parts of described arrangement of reinforcement (4) is separately fixed on the inside and outside both sides sidewall of monolithic secondary lining (3), and many described arrangements of reinforcement (4) all carry out integral reinforcing from inside and outside both sides to monolithic secondary lining (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202421110U CN201705364U (en) | 2010-06-28 | 2010-06-28 | Full-closed integral type lining structure of tunnel in coal-seam gob area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202421110U CN201705364U (en) | 2010-06-28 | 2010-06-28 | Full-closed integral type lining structure of tunnel in coal-seam gob area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705364U true CN201705364U (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202421110U Expired - Fee Related CN201705364U (en) | 2010-06-28 | 2010-06-28 | Full-closed integral type lining structure of tunnel in coal-seam gob area |
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| CN (1) | CN201705364U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562093A (en) * | 2012-02-21 | 2012-07-11 | 山东盛大矿业股份有限公司 | Full-length anchoring supporting method with intensive resin anchor rod and anchor-shotcrete net |
| 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 |
| CN107060807A (en) * | 2017-04-27 | 2017-08-18 | 中铁十六局集团第四工程有限公司 | Gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam and construction method |
| CN107083973A (en) * | 2017-05-05 | 2017-08-22 | 中铁十六局集团第四工程有限公司 | The gas prevention method of region slip casting combination antiseepage supporting is carried out during Tunnel Passing coal seam |
-
2010
- 2010-06-28 CN CN2010202421110U patent/CN201705364U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562093A (en) * | 2012-02-21 | 2012-07-11 | 山东盛大矿业股份有限公司 | Full-length anchoring supporting method with intensive resin anchor rod and anchor-shotcrete net |
| CN102562093B (en) * | 2012-02-21 | 2014-10-15 | 山东盛大矿业股份有限公司 | Full-length anchoring supporting method with intensive resin anchor rod and anchor-shotcrete net |
| 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 |
| CN107060807A (en) * | 2017-04-27 | 2017-08-18 | 中铁十六局集团第四工程有限公司 | Gas tunnel passes through the multi-level leakage preventing structure applied behind coal seam and construction method |
| CN107083973A (en) * | 2017-05-05 | 2017-08-22 | 中铁十六局集团第四工程有限公司 | The gas prevention method of region slip casting combination antiseepage supporting is carried out during Tunnel Passing coal seam |
| CN107083973B (en) * | 2017-05-05 | 2019-07-09 | 中铁十六局集团第四工程有限公司 | The gas prevention method of region slip casting combination antiseepage supporting is carried out when Tunnel Passing coal seam |
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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 |
Granted publication date: 20110112 Termination date: 20160628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |