CN102720520A - Method for ventilating drainage tunnel of extremely-long double-hole tunnel of expressway during construction - Google Patents
Method for ventilating drainage tunnel of extremely-long double-hole tunnel of expressway during construction Download PDFInfo
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- CN102720520A CN102720520A CN2012102231779A CN201210223177A CN102720520A CN 102720520 A CN102720520 A CN 102720520A CN 2012102231779 A CN2012102231779 A CN 2012102231779A CN 201210223177 A CN201210223177 A CN 201210223177A CN 102720520 A CN102720520 A CN 102720520A
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Abstract
The invention discloses a method for ventilating a drainage tunnel of an extremely-long double-hole tunnel of an expressway during construction. Before a drainage transverse channel is opened at the initial stage of constructing the drainage tunnel, a requirement of ventilating the drainage tunnel is met during construction by a press-in ventilation method; after the drainage tunnel is forwards pushed, and drainage transverse channels are opened, fresh air in a flat pilot tunnel is pressed into a tunnel face of the drainage tunnel through an axial flow fan at the drainage transverse channel, which is closest to the tunnel face, of the flat pilot tunnel; a jet flow fan is arranged between the opening of the drainage tunnel and the last drainage transverse channel so as to introduce fresh air into the drainage tunnel; a jet flow fan is arranged in the last drainage transverse channel of an air outlet tunnel so as to introduce air from the opening of the drainage tunnel and the tunnel face into the air outlet tunnel, and the fresh air is discharged by the air outlet tunnel; most paths of the inlet and outlet air are respectively changed into the whole flat pilot tunnel of a main tunnel and the air outlet tunnel from the drainage tunnel; and the sections of the inlet and outlet air are increased, the resistance is reduced, the ventilation effect is good, the air quality of the drainage tunnel at various sections is good, the requirement for ventilation of the drainage tunnel of the extremely-long double-hole tunnel of the expressway during construction is met.
Description
Technical field
The present invention relates to a kind of construction ventilation method of narrow-bore tunnel, relate in particular to the construction ventilation method of speedway speciality twin tunnel drain cavern.
Background technology
In the highway tunnel construction process; Owing to emit pernicious gas in the stratum when use of explosive charge, diesel machine, excavation; And factor such as constructor's breathing, make in the hole air very dirty, comparatively serious to the physical and mental health influence of human body; Therefore must carry out construction ventilation of tunnel, with poisonous in the timely hole, pernicious gas.
For speedway speciality twin tunnel, adopt ventilation by ducts usually.Like accompanying drawing 1, it is with the flat pilot tunnel (2) of one of them tunnel as the fresh wind of entering, and another tunnel is as going out wind-tunnel (3); Installation shaft flow fan (4A) and fresh air is pressed into the face (2A) of flat pilot tunnel through airduct in flat pilot tunnel (2) is introduced out wind-tunnel (3) through jet blower (8) via top transverse passage-way again at the air that the face (2A) of flat pilot tunnel accumulates; Another axial flow blower (4B) of in flat pilot tunnel (2), installing simultaneously is pressed into out fresh air through airduct the face (3A) of wind-tunnel; Going out near the air that accumulates interior face (3A) of wind-tunnel and the top transverse passage-way is drawn outside going out wind-tunnel by the jet blower (9) that goes out in the wind-tunnel.Like this, put down pilot tunnel (2) and go out wind-tunnel (3) and form a recirculating air flow system, as main air duct, section is big the tunnel, has reduced resistance, has improved construction ventilation distance and ventilation effect, can solve the construction ventilation problem of present parallel twin tunnel well.
The twin tunnel of growing up that geological conditions is very complicated; Also service gallery need be set; The rich water Karst Tunnel of much growing up during for example China builds has at present all designed drain cavern, solves the drainage problem of construction and operation phase, like the tunnel, Nanjing University deck-molding speed highway bronze gong mountain in building.The drain cavern construction in this type tunnel need be ventilated equally; Existing drain cavern construction is normally adopted the forced ventilation method promptly: the fresh air in drain cavern is the outer or positive hole that excavation is good is delivered to the work face of drain cavern with axial flow blower through airduct, at face fresh air extruding foul atmosphere foul atmosphere is discharged along drain cavern.Because the drain cavern design section is little, the single port ventilation distance is longer, and the usefull space is little, has limited the size of blower fan and air chimney, is difficult to rapidly with a large amount of hazardous substancess of fresh wind displacement face because of explosion moment generation; To haulage vehicle exhaust gas discharged on the way, also be difficult to timely eliminating; The gradient is bigger from outside to inside for drain cavern in addition, causes relatively difficulty of reverse smoke evacuation.In a word, existing forced ventilation mode, its drafting efficiency and ventilation effect are not good, are difficult to satisfy the drain cavern construction of speedway speciality twin tunnel and the ventilation requirement of transportation.
Summary of the invention
The object of the invention just provides a kind of construction ventilation method of speedway speciality twin tunnel drain cavern, and this method ventilation effect is good, can satisfy the air-conditioning requirement of speedway speciality twin tunnel drain cavern construction preferably.
The present invention realizes its goal of the invention, and the technical scheme that is adopted is: a kind of construction ventilation method of speedway speciality twin tunnel drain cavern, and its way is:
Before the draining transverse passage-way in A, the positive hole of drain cavern and tunnel connects; Axial flow blower is set at the drain cavern hole and through airduct the fresh air outside the hole is pressed into the face of drain cavern; At face fresh air extruding foul atmosphere foul atmosphere is discharged along drain cavern, all be communicated with until the flat pilot tunnel in drain cavern and positive hole, tunnel and the first draining transverse passage-way that goes out wind-tunnel;
B, after the flat pilot tunnel in the positive hole in drain cavern and tunnel and the first draining transverse passage-way that goes out wind-tunnel all are communicated with; On the first draining transverse passage-way of drain cavern peace pilot tunnel, air door is installed; And near the first draining transverse passage-way of flat pilot tunnel, axial flow blower is set; Axial flow blower connects the airduct that passes the flat pilot tunnel first draining transverse passage-way, and the air door of the first draining transverse passage-way in the flat pilot tunnel is closed, and the fresh air that will be put down in the pilot tunnel by axial flow blower and airduct is pressed into drain cavern construction face; Simultaneously, at the hole of drain cavern and go out between the first draining transverse passage-way of wind-tunnel jet blower one is set, fresh air is introduced in the drain cavern; Jet blower two is set in going out the first draining transverse passage-way of wind-tunnel wind-tunnel is introduced out at drain cavern hole and the next air of area surface current, discharge by going out wind-tunnel; All be communicated with until the flat pilot tunnel in drain cavern and positive hole, tunnel and the second draining transverse passage-way that goes out wind-tunnel;
C, after the flat pilot tunnel in the positive hole in drain cavern and tunnel and at least two draining transverse passage-ways going out wind-tunnel all are communicated with; On flat pilot tunnel and the last draining transverse passage-way that goes out wind-tunnel, air door is installed; And near the last draining transverse passage-way of flat pilot tunnel, axial flow blower being set, axial flow blower connects the airduct that passes the flat last draining transverse passage-way of pilot tunnel, and the air door of all draining transverse passage-ways in the flat pilot tunnel is closed; The air door that simultaneously, will go out all the draining transverse passage-ways except that last draining transverse passage-way of wind-tunnel is closed; The fresh air that to be put down in the pilot tunnel by axial flow blower and airduct is pressed into drain cavern construction face; Simultaneously, at the hole of drain cavern and go out between the last draining transverse passage-way of wind-tunnel jet blower one is set, fresh air is introduced in the drain cavern; Jet blower two is set in going out the last draining transverse passage-way of wind-tunnel wind-tunnel is introduced out at drain cavern hole and the next air of area surface current, discharge by going out wind-tunnel.
Compared with prior art, the invention has the beneficial effects as follows:
Before the tunnel drain cavern construction starting stage, each draining transverse passage-way connected, drain cavern was not dark, ventilation distance is short, adopts forced ventilation can satisfy the requirement that in-cavity construction needs wind.After drain cavern is pushed ahead, is connected with the draining transverse passage-way, the flat pilot tunnel in the positive hole of superincumbent diplopore (tunnel) utilize axial flow blower will put down fresh wind in the pilot tunnel through the horizontal logical face that is pressed into drain cavern of this draining near the last draining transverse passage-way of face; Simultaneously, at the hole of drain cavern and go out between the last draining transverse passage-way of wind-tunnel jet blower is set, fresh air is introduced in the drain cavern; Thereby most of path of air intake changes the whole flat pilot tunnel and the whole drain cavern in positive hole into by the airduct in the drain cavern, and the air intake section increases greatly, and the air intake resistance obviously reduces, and intake and intake velocity increase greatly; Jet blower is set in the last draining transverse passage-way near face the air that drain cavern hole and area surface current come is introduced out wind-tunnel going out wind-tunnel, discharge by going out wind-tunnel; Thereby most of path of air-out wholely goes out wind-tunnel by what drain cavern changed positive hole into, and the air-out section increases greatly, goes out wind resistance and obviously reduces, and air output and air-out speed increase greatly; The air intake path that section is little only is to connect the airduct pass the flat last draining transverse passage-way of pilot tunnel, and the air-out path that section is little only is a drain cavern construction face to going out wind-tunnel near the last draining transverse passage-way of face; And this path of two sections is very short.Therefore the present invention's turnover wind section generally is big, and the turnover wind resistance is little, and turnover air quantity and turnover wind speed degree are big, and ventilation effect is good, and the air quality of each section of drain cavern is good, can satisfy the air-conditioning requirement of speedway speciality twin tunnel drain cavern construction preferably.
Below in conjunction with accompanying drawing and concrete embodiment the present invention is done further detailed description.
Description of drawings
Fig. 1 is the sketch map of construction ventilation method in the positive hole of existing parallel diplopore speciality highway tunnel.
Fig. 2 is the construction ventilation method sketch map of the embodiment of the invention before the draining transverse passage-way in the positive hole of drain cavern and tunnel connects.
Fig. 3 is the construction ventilation method sketch map before the flat pilot tunnel of the embodiment of the invention in the positive hole of drain cavern and tunnel connects with first draining transverse passage-way that goes out wind-tunnel.
Fig. 4 is that the flat pilot tunnel of the embodiment of the invention in the positive hole in drain cavern and tunnel all is communicated with back construction ventilation method sketch map with at least two draining transverse passage-ways that go out wind-tunnel.
Wherein, the arrow among Fig. 1-4 is represented the direction that air flows.
The specific embodiment
Embodiment
Fig. 2-4 illustrates, and a kind of specific embodiment of the present invention is, a kind of construction ventilation method of speedway speciality twin tunnel drain cavern, and its way is:
A, Fig. 2 illustrate; Before the draining transverse passage-way in drain cavern 1 and positive hole, tunnel connects; 1B is provided with axial flow blower 4 and through airduct the fresh air outside the hole is pressed into the face 1A of drain cavern 1 at the drain cavern hole; At face 1A fresh air extruding foul atmosphere foul atmosphere is discharged along drain cavern 1, all be communicated with until the flat pilot tunnel 2 in drain cavern 1 and positive hole, tunnel and the first draining transverse passage-way that goes out wind-tunnel 3;
B, Fig. 3 illustrate; After flat pilot tunnel in the positive hole in drain cavern 1 and tunnel 2 and the first draining transverse passage- way 21,31 that goes out wind-tunnel 3 all are communicated with; On the first draining transverse passage-way 21 of drain cavern 1 peaceful pilot tunnel 2, air door is installed; And near the first draining transverse passage-way 21 of flat pilot tunnel 2, axial flow blower 4 is set; Axial flow blower 4 connects the airduct that passes the flat pilot tunnel first draining transverse passage-way 21, and the air door of the first draining transverse passage-way 21 in the flat pilot tunnel is closed, and the fresh air that will be put down in the pilot tunnel 2 by axial flow blower 4 and airduct is pressed into drain cavern construction face 1A; Simultaneously, at the hole of drain cavern 1B and go out between the first draining transverse passage-way 31 of wind-tunnel 3 jet blower 1 is set, fresh air is introduced in the drain cavern 1; Jet blower 26 is set in going out the first draining transverse passage-way 31 of wind-tunnel 3 drain cavern hole 1B and the next air of face 1A stream are introduced out wind-tunnel 3, discharge by going out wind-tunnel 3; All be communicated with until the flat pilot tunnel in drain cavern 1 and positive hole, tunnel 2 and the second draining transverse passage-way that goes out wind-tunnel 3;
C, Fig. 4 illustrate; After the flat pilot tunnel in the positive hole in drain cavern 1 and tunnel 2 and at least two draining transverse passage-ways that go out wind-tunnel 3 all are communicated with; 2N, 3N install air door on flat pilot tunnel 2 and the last draining transverse passage-way that goes out wind-tunnel 3; And near the last draining transverse passage-way 2N of flat pilot tunnel 2, axial flow blower 4 being set, axial flow blower 4 connects the airduct that passes the flat last draining transverse passage-way of pilot tunnel 2N, and the air door of all draining transverse passage-ways in the flat pilot tunnel 2 is closed; The air door that simultaneously, will go out all the draining transverse passage-ways except that last draining transverse passage-way 3N of wind-tunnel 3 is closed; To put down in the pilot tunnel 2 fresh air by axial flow blower 4 and airduct and be pressed into drain cavern construction face 1A; Simultaneously, at the hole of drain cavern 1B and go out between the last draining transverse passage-way 3N of wind-tunnel 3 jet blower 1 is set, fresh air is introduced in the drain cavern 1; Jet blower 26 is set in going out the last draining transverse passage-way 3N of wind-tunnel 3 drain cavern hole 1B and the next air of face 1A stream are introduced out wind-tunnel 3, discharge by going out wind-tunnel 3.
Claims (1)
1. the construction ventilation method of a speedway speciality twin tunnel drain cavern, its way is:
Before the draining transverse passage-way in A, drain cavern (1) and positive hole, tunnel connects; (1B) is provided with axial flow blower (4) and through airduct the fresh air outside the hole is pressed into the face (1A) of drain cavern (1) at the drain cavern hole; At face (1A) fresh air extruding foul atmosphere foul atmosphere is discharged along drain cavern (1), all be communicated with until flat pilot tunnel (2) in drain cavern (1) and positive hole, tunnel and the first draining transverse passage-way (21,31) that goes out wind-tunnel (3);
B, after the flat pilot tunnel (2) in drain cavern (1) and the positive hole, tunnel and the first draining transverse passage-way (21,31) that goes out wind-tunnel (3) all are communicated with; Go up the installation air door at the first draining transverse passage-way (21) of the peaceful pilot tunnel of drain cavern (1) (2); And near the first draining transverse passage-way (21) of flat pilot tunnel (2), axial flow blower (4) is set; Axial flow blower (4) connects the airduct that passes the flat pilot tunnel first draining transverse passage-way (21); To put down the air door of the first draining transverse passage-way (21) in the pilot tunnel and close, the fresh air that will be put down in the pilot tunnel (2) by axial flow blower (4) and airduct is pressed into drain cavern construction face (1A); Simultaneously, at the hole of drain cavern (1B) and go out between the first draining transverse passage-way (31) of wind-tunnel (3) jet blower one (5) is set, fresh air is introduced in the drain cavern (1); Jet blower two (6) is set in going out the first draining transverse passage-way (31) of wind-tunnel (3) drain cavern hole (1B) and the next air of face (1A) stream are introduced out wind-tunnel (3), discharge by going out wind-tunnel (3); All be communicated with until the flat pilot tunnel (2) in drain cavern (1) and positive hole, tunnel and the second draining transverse passage-way that goes out wind-tunnel (3);
C, after the flat pilot tunnel (2) in drain cavern (1) and the positive hole, tunnel and at least two draining transverse passage-ways going out wind-tunnel (3) all are communicated with; (2N, 3N) installation air door on flat pilot tunnel (2) and the last draining transverse passage-way that goes out wind-tunnel (3); And near the last draining transverse passage-way (2N) of flat pilot tunnel (2), axial flow blower (4) is set; Axial flow blower (4) connects the airduct that passes the flat last draining transverse passage-way of pilot tunnel (2N); To put down the air door of all draining transverse passage-ways in the pilot tunnel (2) and close, simultaneously, the air door that will go out all the draining transverse passage-ways except that last draining transverse passage-way (3N) of wind-tunnel (3) is closed; The fresh air that to be put down (2) in the pilot tunnel by axial flow blower (4) and airduct is pressed into drain cavern construction face (1A); Simultaneously, at the hole of drain cavern (1B) and go out between the last draining transverse passage-way (3N) of wind-tunnel (3) jet blower one (5) is set, fresh air is introduced in the drain cavern (1); Jet blower two (6) is set in going out the last draining transverse passage-way (3N) of wind-tunnel (3) drain cavern hole (1B) and the next air of face (1A) stream are introduced out wind-tunnel (3), discharge by going out wind-tunnel (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210223177.9A CN102720520B (en) | 2012-07-02 | 2012-07-02 | Method for ventilating drainage tunnel of extremely-long double-hole tunnel of expressway during construction |
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| CN201210223177.9A CN102720520B (en) | 2012-07-02 | 2012-07-02 | Method for ventilating drainage tunnel of extremely-long double-hole tunnel of expressway during construction |
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| CN102720520B CN102720520B (en) | 2014-12-10 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314600A (en) * | 2014-09-05 | 2015-01-28 | 中铁五局（集团）有限公司 | Method for constructing and ventilating three parallel tunnels |
| CN104879157A (en) * | 2015-06-04 | 2015-09-02 | 四川省交通运输厅公路规划勘察设计研究院 | Road tunnel construction ventilating structure and ventilation control method thereof |
| CN106593508A (en) * | 2016-12-26 | 2017-04-26 | 中铁二局集团有限公司 | Plateau high-gas extra long separating type tunnel construction ventilation method |
| CN106837401A (en) * | 2017-03-23 | 2017-06-13 | 中铁五局集团成都工程有限责任公司 | Narrow tunnel isolates aeration structure |
| CN107916941A (en) * | 2017-12-15 | 2018-04-17 | 中交二公局东萌工程有限公司 | Bore quick-fried combined construction method in a kind of double main holes of three hole vcehicular tunnels and middle drift TBM |
| CN108952789A (en) * | 2018-08-21 | 2018-12-07 | 湖南科技大学 | Amount of energy saving calculation method for Extra-long Highway Tunnel enclosed Controlled Recirculation Ventilation |
| CN109139104A (en) * | 2018-11-16 | 2019-01-04 | 中铁二十局集团第六工程有限公司 | One kind passes through that clastic rock steep dip is inverse to rush rich water tomography tunnel drainage construction method |
| CN112412518A (en) * | 2020-10-16 | 2021-02-26 | 湖南长院悦诚装备有限公司 | Tunnel face circulation air supply system |
| CN113863981A (en) * | 2021-11-16 | 2021-12-31 | 中国建筑第七工程局有限公司 | Water draining method for water burst of water-rich karst tunnel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215973A (en) * | 2007-12-29 | 2008-07-09 | 中铁隧道集团有限公司 | Tunnel construction jet flow laneway ventilation method |
| CN101285394A (en) * | 2008-05-27 | 2008-10-15 | 中铁十一局集团第四工程有限公司 | Tunnel ventilation communication system and its wind power distribution and regulating method |
| KR100886350B1 (en) * | 2008-07-15 | 2009-03-03 | (주)비엔텍아이엔씨 | Intelligent selective supply and exhaust system for tunnel ventilation |
| CN201241720Y (en) * | 2008-05-27 | 2009-05-20 | 中铁十一局集团第四工程有限公司 | Tunnel ventilation communicating system |
| JP2010116734A (en) * | 2008-11-13 | 2010-05-27 | Railway Technical Res Inst | Upper and lower line connecting type high-speed air current circulation tunnel |
| CN102296963A (en) * | 2011-08-01 | 2011-12-28 | 湖南省交通规划勘察设计院 | Construction method for ultra-long deep-buried road tunnel |
| CN102305095A (en) * | 2011-08-01 | 2012-01-04 | 湖南省交通规划勘察设计院 | Flat guide ventilation operation system of extra-long deeply-buried road tunnel |
| CN202170803U (en) * | 2011-08-01 | 2012-03-21 | 湖南省交通规划勘察设计院 | Very long, deep-buried highway tunnel parallel adit ventilation operation system |
-
2012
- 2012-07-02 CN CN201210223177.9A patent/CN102720520B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215973A (en) * | 2007-12-29 | 2008-07-09 | 中铁隧道集团有限公司 | Tunnel construction jet flow laneway ventilation method |
| CN101285394A (en) * | 2008-05-27 | 2008-10-15 | 中铁十一局集团第四工程有限公司 | Tunnel ventilation communication system and its wind power distribution and regulating method |
| CN201241720Y (en) * | 2008-05-27 | 2009-05-20 | 中铁十一局集团第四工程有限公司 | Tunnel ventilation communicating system |
| KR100886350B1 (en) * | 2008-07-15 | 2009-03-03 | (주)비엔텍아이엔씨 | Intelligent selective supply and exhaust system for tunnel ventilation |
| JP2010116734A (en) * | 2008-11-13 | 2010-05-27 | Railway Technical Res Inst | Upper and lower line connecting type high-speed air current circulation tunnel |
| CN102296963A (en) * | 2011-08-01 | 2011-12-28 | 湖南省交通规划勘察设计院 | Construction method for ultra-long deep-buried road tunnel |
| CN102305095A (en) * | 2011-08-01 | 2012-01-04 | 湖南省交通规划勘察设计院 | Flat guide ventilation operation system of extra-long deeply-buried road tunnel |
| CN202170803U (en) * | 2011-08-01 | 2012-03-21 | 湖南省交通规划勘察设计院 | Very long, deep-buried highway tunnel parallel adit ventilation operation system |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314600A (en) * | 2014-09-05 | 2015-01-28 | 中铁五局（集团）有限公司 | Method for constructing and ventilating three parallel tunnels |
| CN104314600B (en) * | 2014-09-05 | 2016-08-24 | 中铁五局（集团）有限公司 | Article three, the construction ventilation method of Parallel Tunnel |
| CN104879157A (en) * | 2015-06-04 | 2015-09-02 | 四川省交通运输厅公路规划勘察设计研究院 | Road tunnel construction ventilating structure and ventilation control method thereof |
| CN104879157B (en) * | 2015-06-04 | 2017-03-15 | 四川省交通运输厅公路规划勘察设计研究院 | Highway tunnel construction aeration structure and its ventilation amount control method |
| CN106593508A (en) * | 2016-12-26 | 2017-04-26 | 中铁二局集团有限公司 | Plateau high-gas extra long separating type tunnel construction ventilation method |
| CN106837401A (en) * | 2017-03-23 | 2017-06-13 | 中铁五局集团成都工程有限责任公司 | Narrow tunnel isolates aeration structure |
| CN107916941A (en) * | 2017-12-15 | 2018-04-17 | 中交二公局东萌工程有限公司 | Bore quick-fried combined construction method in a kind of double main holes of three hole vcehicular tunnels and middle drift TBM |
| CN108952789A (en) * | 2018-08-21 | 2018-12-07 | 湖南科技大学 | Amount of energy saving calculation method for Extra-long Highway Tunnel enclosed Controlled Recirculation Ventilation |
| CN109139104A (en) * | 2018-11-16 | 2019-01-04 | 中铁二十局集团第六工程有限公司 | One kind passes through that clastic rock steep dip is inverse to rush rich water tomography tunnel drainage construction method |
| CN112412518A (en) * | 2020-10-16 | 2021-02-26 | 湖南长院悦诚装备有限公司 | Tunnel face circulation air supply system |
| CN113863981A (en) * | 2021-11-16 | 2021-12-31 | 中国建筑第七工程局有限公司 | Water draining method for water burst of water-rich karst tunnel |
| CN113863981B (en) * | 2021-11-16 | 2023-08-18 | 中国建筑第七工程局有限公司 | Water draining method for water-rich karst tunnel water burst |
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