CN103388489A - Strong karst tunnel permanent draining structure and construction method thereof - Google Patents
Strong karst tunnel permanent draining structure and construction method thereof Download PDFInfo
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- CN103388489A CN103388489A CN2013103371085A CN201310337108A CN103388489A CN 103388489 A CN103388489 A CN 103388489A CN 2013103371085 A CN2013103371085 A CN 2013103371085A CN 201310337108 A CN201310337108 A CN 201310337108A CN 103388489 A CN103388489 A CN 103388489A
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- pvc pipe
- tunnel
- vault
- flap valve
- drain hole
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Abstract
The invention discloses a strong karst tunnel permanent draining structure and a construction method thereof. The structure comprises a draining hole, a PVC (polyvinyl chloride) pipe and a check valve; the draining hole is positioned in the bedrock concentrated effluent position of an arc top poured at the periphery of the tunnel; the PVC pipe is mounted at the tail end of the draining hole and is communicated with the tunnel; the check valve is mounted on the PVC pipe and is fixed at the structure reinforcing steel ribs of the arc top; and the PVC pipe and the check valve are poured in the concrete of the arc top. The strong karst tunnel permanent draining structure and the construction method thereof have the beneficial effects of meeting the pouring quality demands of the concrete, solving the problem that the surrounding rock stability is endangered by external permeation of internal water in the tunnel in the later-period operation stage, preventing crack water from influencing the strength of the common concrete, and avoiding the damage to the whole stability of the rock body as during water passing in the later period, the internal water in the tunnel possibly enters into to the bedrock by the draining hole, thus increasing the technology reliability and safety of engineering and achieving the aims of saving work period and safe construction.
Description
Technical field
The present invention relates to the permanent discharge structure of a kind of strong karst tunnel and job practices thereof, belong to tunnel diversion technical field.
Background technology
At present, the method of concentrating the place of water outlet generally to adopt at strong karst area tunnel is that crag is beaten drain hole, draw and connect with the normal discharge pipe during concreting, percolating water destroys the former water/binder ratio of concrete, intensity to lining concrete exerts an influence, when the later stage, tunnel was crossed water, in tunnel, water may enter basement rock inside by drain hole, destroyed the resistance to overturning of rock mass.If drain hole is carried out shutoff, just can cause rock mass internal water pressure to increase because discharging, unfavorable to the country rock monolithic stability.
Flap valve is applied very extensive aspect plumbing, be to prevent that the medium in pipeline from flowing backwards, but at strong karst area tunnel, concentrate the water outlet position without utilization.
Summary of the invention
The object of the present invention is to provide the permanent discharge structure of a kind of strong karst tunnel and job practices thereof, can overcome the deficiencies in the prior art, can meet simultaneously the concrete pouring quality requirement, in also can solving in operation phase in later stage hole, water exosmoses and endangers the adjoining rock stability problem, reaches the purpose of saving duration, safe construction.
The objective of the invention is to be achieved through the following technical solutions: the permanent discharge structure of a kind of strong karst tunnel and job practices thereof, it comprises drain hole, pvc pipe and flap valve, wherein, drain hole is positioned at the basement rock of vault and concentrates the water outlet position, vault is cast in the periphery in tunnel, pvc pipe is arranged on the end of drain hole and with tunnel, is communicated with, and flap valve is arranged on pvc pipe and is fixed on the structure reinforcing bars of vault, and pvc pipe and flap valve are cast in the concrete of vault.
The inboard of described vault is provided with abutment wall in lining cutting, and arranged outside has the outer abutment wall of lining cutting, and the outer abutment wall of lining cutting is outside equipped with country rock.
The described drain hole 5-15 ° that tilts earthward.
Described flap valve is positioned at the scope that is exported to lining cutting abutment wall sideline of pvc pipe.
The job practices of the permanent discharge structure of a kind of strong karst tunnel and job practices thereof, it comprises following steps:
(1), at the basement rock of vault, concentrate the water outlet position to bore drain hole, the drain hole 5-15 ° that tilts earthward;
(2), pvc pipe is installed in the aperture of drain hole, and the scope that is exported to lining cutting abutment wall sideline that is positioned at pvc pipe on pvc pipe is installed flap valve;
(3), the structure reinforcing bars of flap valve and vault is fixed;
(4), pvc pipe and flap valve are cast in the concrete of vault;
(5), opening flap valve carries out the draining debugging of the concentrated water outlet position of basement rock, the normal draining at the concentrated water outlet position of assurance runtime basement rock.
Beneficial effect of the present invention is: both met the concrete pouring quality requirement, in having solved again in operation phase in later stage hole, water exosmoses and endangers the adjoining rock stability problem, avoided ordinary concrete because crevice water affects concrete strength, when tunnel is crossed water to the later stage, and avoided water in tunnel may enter by drain hole the problem of the resistance to overturning of basement rock internal sabotage rock mass, increased simultaneously engineering reliability and the safety of engineering, reached save the duration, the purpose of safe construction.
Description of drawings
Fig. 1 is structural representation of the present invention.
Wherein, the 1-vault, the 2-drain hole, the 3-PVC pipe, the 4-flap valve, the 5-structure reinforcing bars, the 6-tunnel, abutment wall in the 7-lining cutting, the outer abutment wall of 8-lining cutting, the 9-country rock, the 10-basement rock is concentrated the water outlet position.
The specific embodiment
Further describe technical scheme of the present invention below in conjunction with accompanying drawing, but that claimed scope is not limited to is described.
As Fig. 1, the permanent discharge structure of a kind of strong karst tunnel and job practices thereof, it comprises drain hole 2, pvc pipe 3 and flap valve 4, wherein, drain hole 2 is positioned at the basement rock of vault 1 and concentrates water outlet position 10, and vault 1 is cast in the periphery in tunnel 6, and pvc pipe 3 is arranged on the end of drain hole 2 and with tunnel 6, is communicated with, flap valve 4 is arranged on pvc pipe 2 and is fixed on the structure reinforcing bars 5 of vault 1, and pvc pipe 3 and flap valve 4 are cast in the concrete of vault 1.
The inboard of described vault 1 is provided with abutment wall 7 in lining cutting, and arranged outside has the outer abutment wall 8 of lining cutting, and the outer abutment wall 8 of lining cutting is outside equipped with country rock 9.
Described drain hole 2 5-15 ° that tilts earthward.
Described flap valve 4 is positioned at the scope that is exported to lining cutting abutment wall 7 sidelines of pvc pipe 2.
The job practices of the permanent discharge structure of a kind of strong karst tunnel and job practices thereof, it comprises following steps:
(1), at the basement rock of vault 1, concentrate water outlet position 10 to bore drain holes 2, drain hole 2 5-15 ° that tilts earthward;
(2), pvc pipe 2 is installed in the aperture of drain hole 2, and the scope that is exported to lining cutting abutment wall 7 sidelines that is positioned at pvc pipe 2 on pvc pipe 2 is installed flap valve 4;
(3), flap valve 4 is fixing with the structure reinforcing bars 5 of vault 1;
(4), pvc pipe 2 and flap valve 4 are cast in the concrete of vault 1;
(5), open flap valve 4 and carry out basement rock concentrated water outlet position 10 drainings debugging, the normal draining at the concentrated water outlet position 10 of assurance runtime basement rock.
Prior art adopts carries out shutoff to drain hole, can cause like this rock mass internal water pressure to increase because discharging, unfavorable to the country rock monolithic stability.Can eliminate by the flap valve draining the disadvantageous aspect of adjoining rock stability that the normal discharge pore area comes, avoided ordinary concrete because crevice water affects concrete strength, when tunnel is crossed water to the later stage simultaneously, avoided water in tunnel may enter by drain hole the problem of the resistance to overturning of basement rock internal sabotage rock mass, replace prior art drain hole has been carried out shutoff, increased engineering reliability and the safety of engineering.
Claims (5)
1. one kind strong permanent discharge structure of karst tunnel, it is characterized in that: it comprises drain hole (2), pvc pipe (3) and flap valve (4), wherein, drain hole (2) is positioned at the basement rock of vault (1) and concentrates water outlet position (10), vault (1) is cast in the periphery of tunnel (6), pvc pipe (3) is arranged on the end of drain hole (2) and with tunnel (6), is communicated with, flap valve (4) is arranged on pvc pipe (2) and goes up and be fixed on the structure reinforcing bars (5) of vault (1), and pvc pipe (3) and flap valve (4) are cast in the concrete of vault (1).
2. the permanent discharge structure of strong karst tunnel according to claim 1 is characterized in that: the inboard of described vault (1) is provided with abutment wall (7) in lining cutting, and arranged outside has the outer abutment wall (8) of lining cutting, and the outer abutment wall (8) of lining cutting is outside equipped with country rock (9).
3. the permanent discharge structure of strong karst tunnel according to claim 1 is characterized in that: described drain hole (2) 5-15 ° that tilts earthward.
4. the permanent discharge structure of strong karst tunnel according to claim 1, it is characterized in that: described flap valve (4) is positioned at the scope that is exported to lining cutting abutment wall (7) sideline of pvc pipe (2).
5. the job practices of the permanent discharge structure of strong karst tunnel, it is characterized in that: it comprises following steps:
(1), at the basement rock of vault (1), concentrate water outlet position (10) to bore drain hole (2), drain hole (2) 5-15 ° that tilts earthward;
(2), pvc pipe (2) is installed in the aperture of drain hole (2), and be positioned at the scope installation flap valve (4) that is exported to lining cutting abutment wall (7) sideline of pvc pipe (2) on pvc pipe (2);
(3), flap valve (4) is fixing with the structure reinforcing bars (5) of vault (1);
(4), pvc pipe (2) and flap valve (4) are cast in the concrete of vault (1);
(5), opening flap valve (4) carries out the draining debugging of the concentrated water outlet position (10) of basement rock, the normal draining at the concentrated water outlet position (10) of assurance runtime basement rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103371085A CN103388489A (en) | 2013-08-05 | 2013-08-05 | Strong karst tunnel permanent draining structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103371085A CN103388489A (en) | 2013-08-05 | 2013-08-05 | Strong karst tunnel permanent draining structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103388489A true CN103388489A (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013103371085A Pending CN103388489A (en) | 2013-08-05 | 2013-08-05 | Strong karst tunnel permanent draining structure and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372736A (en) * | 2014-10-30 | 2015-02-25 | 成都聚智工业设计有限公司 | Drainage structure |
| CN104912574A (en) * | 2015-06-29 | 2015-09-16 | 中南大学 | A tunnel lining leakage water treatment method |
| CN107218057A (en) * | 2017-06-15 | 2017-09-29 | 中铁二院工程集团有限责任公司 | A kind of draining portal structure suitable for water rich strata |
Citations (7)
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|---|---|---|---|---|
| SU823590A1 (en) * | 1977-09-26 | 1981-04-23 | Среднеазиатское Отделение Всесоюз-Ного Ордена Ленина Проектно-Изыска-Тельского И Научно-Исследовательскогоинститута "Гидропроект" | Method of apparatus for erecting the lining of underground structure |
| SU1090893A1 (en) * | 1981-12-18 | 1984-05-07 | Новосибирский филиал Всесоюзного научно-исследовательского института транспортного строительства | Drainage arrangement |
| CN2076993U (en) * | 1990-11-01 | 1991-05-15 | 长沙中南水利水电技术开发部 | Hydraulic structure one-way draw off valve |
| US20050095066A1 (en) * | 2003-10-28 | 2005-05-05 | Daniel Warren | Method for repairing in-ground tunnel structures |
| JP2005155169A (en) * | 2003-11-26 | 2005-06-16 | Nishimatsu Constr Co Ltd | Pipe material for secondary lining of shield tunnel and secondary lining method of shield tunnel using the pipe material |
| CN202544925U (en) * | 2012-04-13 | 2012-11-21 | 中国水电顾问集团华东勘测设计研究院 | One-hole dual-purpose tunnel drain hole structure |
| CN202559321U (en) * | 2012-05-16 | 2012-11-28 | 中国葛洲坝集团股份有限公司 | Diversion tunnel plug concrete drainage pipe device |
-
2013
- 2013-08-05 CN CN2013103371085A patent/CN103388489A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU823590A1 (en) * | 1977-09-26 | 1981-04-23 | Среднеазиатское Отделение Всесоюз-Ного Ордена Ленина Проектно-Изыска-Тельского И Научно-Исследовательскогоинститута "Гидропроект" | Method of apparatus for erecting the lining of underground structure |
| SU1090893A1 (en) * | 1981-12-18 | 1984-05-07 | Новосибирский филиал Всесоюзного научно-исследовательского института транспортного строительства | Drainage arrangement |
| CN2076993U (en) * | 1990-11-01 | 1991-05-15 | 长沙中南水利水电技术开发部 | Hydraulic structure one-way draw off valve |
| US20050095066A1 (en) * | 2003-10-28 | 2005-05-05 | Daniel Warren | Method for repairing in-ground tunnel structures |
| JP2005155169A (en) * | 2003-11-26 | 2005-06-16 | Nishimatsu Constr Co Ltd | Pipe material for secondary lining of shield tunnel and secondary lining method of shield tunnel using the pipe material |
| CN202544925U (en) * | 2012-04-13 | 2012-11-21 | 中国水电顾问集团华东勘测设计研究院 | One-hole dual-purpose tunnel drain hole structure |
| CN202559321U (en) * | 2012-05-16 | 2012-11-28 | 中国葛洲坝集团股份有限公司 | Diversion tunnel plug concrete drainage pipe device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104372736A (en) * | 2014-10-30 | 2015-02-25 | 成都聚智工业设计有限公司 | Drainage structure |
| CN104912574A (en) * | 2015-06-29 | 2015-09-16 | 中南大学 | A tunnel lining leakage water treatment method |
| CN104912574B (en) * | 2015-06-29 | 2017-12-05 | 中南大学 | A kind of tunnel-liner percolating water Treatment Methods |
| CN107218057A (en) * | 2017-06-15 | 2017-09-29 | 中铁二院工程集团有限责任公司 | A kind of draining portal structure suitable for water rich strata |
| CN107218057B (en) * | 2017-06-15 | 2024-01-05 | 中铁二院工程集团有限责任公司 | Drainage portal structure suitable for water-rich stratum |
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Application publication date: 20131113 |