CN102080560A - Tunnel wind room relay ventilation method for long blind heading - Google Patents
Tunnel wind room relay ventilation method for long blind heading Download PDFInfo
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- CN102080560A CN102080560A CN 201010587780 CN201010587780A CN102080560A CN 102080560 A CN102080560 A CN 102080560A CN 201010587780 CN201010587780 CN 201010587780 CN 201010587780 A CN201010587780 A CN 201010587780A CN 102080560 A CN102080560 A CN 102080560A
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Abstract
The invention provides a tunnel wind room relay ventilation method for long blind heading, which comprises the following steps of: preparing for construction; constructing wind rooms, i.e. separating the upper cross section of a tunnel in a certain range into the wind rooms by steel plates or arranging main holes with certain length as the wind rooms; ventilating the wind rooms, delivering fresh air to the wind rooms through ventilation pipes and a fan, and then introducing the fresh air to all working surfaces of the tunnel through the wind rooms; examining the ventilation effect of all working surfaces, and analysing a ventilation system and examining the seal conditions of the wind rooms and the ventilation pipes when the ventilation effect cannot meet the requirements on the working surfaces; and increasing excavation mileages when the ventilation effect meets the requirements on the working surfaces. The method largely improves the ventilation conditions of the working surfaces, almost reduces the wind leakage rate of the wind rooms to zero and greatly increases the length of blind heading.
Description
Technical field
The present invention relates to only driving tunnel air compartment relay method of ventilation of a kind of long distance.
Background technology
Along with development and national economy, the tunnel of growing up in the railway construction to build quantity increasing.In the domestic constructing tunnel, owing to still extensively adopt the drilling and blasting method excavation, and the mechanization of building operation degree improves day by day, after the explosion and operating environment deterioration in the tunnel that the pernicious gas that produces causes in the diesel machine operation process, more and more become the engineering constraint progress, influence the healthy key factor of operating personnel in duration of a project and the harm hole.
Tunnel ventilation is the critical process that drilling and blasting method is built the tunnel, and the quality of this operation construction technology will directly have influence on the integral layout and the economic effect of constructing tunnel, be the engineering construction key of success.The form of tunnel ventilation has various at home, only forced construction ventilation is one of technological difficulties during long tunnel is built always, along with improving constantly of ventilate theoretical and technical equipment, the distance of only forced construction ventilation is also more and more longer, how could guarantee the optimum efficiency of only construction ventilation, it is the direction that construction is updated and studied, and air compartment relay ventilation only head in trackless transportation speciality inclined shaft and super long tunnel tunnels than the application in long, similar at home successful case is less, even other relay method of ventilation is arranged, its ventilation effect is not good, and construction and maintenance be difficulty, and construction cost is bigger.
Summary of the invention
The range of application of air compartment relay method of ventilation of the present invention relates to the solely relay of head driving tunnel ventilation of long distance, and main application scenarios has following three kinds:
First kind of application scenarios: two-wire list hole does not have auxiliary cavern and imports and exports solely head driving by the tunnel, can take steel plate to be divided into air compartment in the section certain limit on the tunnel.Referring to Fig. 1.
Second kind of application scenarios: the two holes of two-wire do not have auxiliary cavern and import and export solely head driving by the tunnel, can take steel plate to be divided into air compartment in the section certain limit on the tunnel.When air compartment is used, be advisable not influence the work plane construction, particularly the air compartment place can ensure normally and be open to traffic, and prevents to go here and there wind during ventilation.Referring to Fig. 2.
The third application scenarios: two-wire list hole or the construction of two-wire double-hole tunnel, the situation of two scope of operations, three scope of operations or four scope of operations are advanced in inclined shaft or horizontal hole.Can take the method described in detail in the specific embodiment for three scope of operations, utilize the positive hole of certain-length that air compartment is set, can on the tunnel, take steel plate to be divided into air compartment in the section certain limit for two scope of operations or four scope of operations, referring to Fig. 3 and Fig. 4.When air compartment is used, be advisable not influence the work plane construction, particularly the air compartment place can ensure normally and be open to traffic, and prevents to go here and there wind during ventilation.
According to an aspect of the present invention, only driving tunnel air compartment relay method of ventilation of long distance may further comprise the steps: preparation of construction; Air compartment construction is taked steel plate to be divided into air compartment on the tunnel or is utilized the positive hole of certain-length that air compartment is set in the section certain limit; Air compartment ventilates, and utilizes air chimney and blower fan that fresh air is delivered to air compartment, again by air compartment draw fresh air to the tunnel each work plane; The ventilation effect inspection of each work plane when ventilation effect does not satisfy the work plane needs, is analyzed ventilation system, revises the ventilation parameter, checks wind chamber sealing situation and air pipeline; When ventilation effect satisfies the work plane needs, increase the excavation mileage.
Further, when the tunnel is two-wire list hole when not having the two holes in auxiliary cavern, two-wire and not having auxiliary cavern or inclined shaft or horizontal hole and advance the situation of two scope of operations in two-wire list hole or the two holes of two-wire or four scope of operations, on the tunnel, take steel plate to be divided into air compartment in the section certain limit.
Further, when the tunnel is the situation of inclined shaft or horizontal hole three scope of operations entering the two holes of two-wire, utilize the positive hole of certain-length that air compartment is set.Further, in the air compartment construction sequence, at first construct inclined shaft or horizontal hole, construction first transverse passage-way that links to each other with inclined shaft or horizontal hole is offered second transverse passage-way at the primary importance place apart from the first transverse passage-way certain distance, and is entered right line construction from left line thus, after right line and the perforation of first transverse passage-way, turn to the right line end work plane of construction, construction is to being that the second place place of certain distance opens the 3rd transverse passage-way apart from first transverse passage-way, utilizes the positive hole of right line between first transverse passage-way and the 3rd transverse passage-way as air compartment.Distance between first transverse passage-way and second transverse passage-way is 88m, and the distance between first transverse passage-way and the 3rd transverse passage-way is 888m.Air compartment length is 860m, and cross-sectional area is 104.18m
2
Further, air compartment storage air quantity is greater than 2000m
3
For guaranteeing the solely wind supply quantity of head driving tunnel front of long distance, the applicant has carried out scientific and technical innovation, has adopted air chimney to add the method for air compartment relay, has improved the face-airing situation greatly.This method is utilized air compartment end blower fan swabbing action, produces pressure differential, makes the interior air of air compartment flow, and reaches the purpose of ventilation.By this principle, with the increase of tunnel piercing length always can enlarge forward, prolong air compartment length, and air leak rate of air curtain is almost nil in air compartment, can greatly improve only Excavation Length.And technology is simple, and constructing operation is convenient; Energy consumption is low, and construction cost is low, and ventilation effect is good; The supporting simplification of construction equipment has reduced a large amount of airducts and has installed, and facilities such as air door, air channel, Ventilator Room need be set, and installs simply, and workable, maintenance is convenient.
Description of drawings
Fig. 1 does not have the auxiliary tunnel chamber ventilated for two-wire list hole and arranges schematic diagram;
Fig. 2 does not have the auxiliary tunnel chamber ventilated for the two holes of two-wire and arranges schematic diagram;
Fig. 3 advances the ventilation layout schematic diagram of two scope of operation situations in the two holes of two-wire for inclined shaft or horizontal hole;
Fig. 4 advances the ventilation layout schematic diagram of four scope of operation situations in the two holes of two-wire for inclined shaft or horizontal hole;
Fig. 5 is an air compartment ventilation construction flow chart;
Fig. 6 advances the ventilation layout schematic diagram of three scope of operation situations in the two holes of two-wire for inclined shaft or horizontal hole;
Fig. 7 is a positive hole brattice schematic diagram.
Among the figure: 1-2 platform 2 * 132KW ventilation fan; The 2-inclined shaft; The 3-air chimney; The 4-jet blower; The dirty wind of 5-is discharged direction; 6-shaft bottom transverse passage-way brattice; Line Chongqing, 7-left side end ventilation fan; Line Chongqing, 8-left side end; The right line of 9-Chongqing end; 10-first transverse passage-way; The 11-air compartment; 12-second transverse passage-way; The 13-second transverse passage-way brattice; Line Lanzhou, 14-left side end ventilation fan; The positive hole of the right line of 15-brattice; The right line of 16-Lanzhou end ventilation fan; The right line of 17-Lanzhou end; 18-the 3rd transverse passage-way; The positive hole of 19-air chimney; Line Lanzhou, 20-left side end; 21-ventilation fan shaped steel frame; 22-tunnel center line; 23-leaves a door unlocked in advance; H1=5000mm; H2=8290mm.
The specific embodiment
In order to improve the effect of the inclined shaft longer face-airing of only head driving in super long tunnel of growing up, the applicant is big at this project edpth of tunnel in orchid Chongqing railway WEST QINLING super long tunnel engineering sieve family reason inclined shaft of undertaking the construction of ventilates construction, left side line construction 5016.95m, right line 2637.05m, positive hole becomes 85 ° 58 ' 58 with inclined shaft " intersect; and the tiltedly long 2473m of inclined shaft, discrepancy in elevation 278m.Simultaneously to three work plane air feeds, the air feed effect directly influences construction safety and progress to construction ventilation by the shaft bottom air compartment.Below, be example just with the concrete job practices of applicant in orchid Chongqing railway WEST QINLING super long tunnel engineering sieve family reason inclined shaft ventilates construction, describe inclined shaft of the present invention or horizontal hole in detail and advance the air compartment relay method of ventilation of three scope of operation situations in the two holes of two-wire, referring to Fig. 5 and Fig. 6.
One, preparation of construction
1, with similar slope construction, the comparison of investigating, research and design ventilation scheme.
2, with according to on-site actual situations, consider windage, invisible waste, oxygen demand such as the manpower that is equipped with according to the scene, machinery are utilized the theoretical wind supply quantity of empirical formula evaluation work face, guarantee enough oxygen-supplying amounts of constructor.
3, according to result of calculation, the air compartment size of making rational planning for, the preparation human and material resources carry out air compartment and perform.
4, buy gas detecting instrument, spot-check the ventilation effect of work plane at any time, special ventilation teams and groups are set, carry out the regular maintenance and the maintenance of air pipeline, and strengthen the patrol of air compartment, check the situation such as firm of air compartment partition wall.
Two, air compartment construction
The construction inclined shaft 2 that faces down from ground, coupled construction first transverse passage-way 10.Ventilate for strengthening, offering second transverse passage-way 12 apart from first transverse passage-way 10 for the primary importance place of 88m, and enter right line construction from left line thus, after right line and 10 perforations of first transverse passage-way, turn to the right line end work plane of construction, extremely distance first transverse passage-way 10 is for the second place place of 888m opens the 3rd transverse passage-way 18 in construction, and the positive hole of right line that utilizes 18 of first transverse passage-way 10 and the 3rd transverse passage-ways is as air compartment 11.It is emphasized that, in orchid Chongqing railway WEST QINLING super long tunnel engineering sieve family reason inclined shaft ventilated construction, the distance between first transverse passage-way 10 and second transverse passage-way 12 was 88m, and the distance between first transverse passage-way 10 and the 3rd transverse passage-way 18 is 888m, air compartment length is 860m, and cross-sectional area is 104.18m
2But first transverse passage-way 10, second transverse passage-way 12 and the 3rd transverse passage-way 18 distance each other are to determine according to the concrete condition of job site, and the foundation of determining is exactly to guarantee that air compartment storage air quantity is greater than 2000m
3
Lay the air chimney of diameter 1.8m twice at the inclined shaft vault, by a plurality of transverse passage-ways of construction, fresh air is delivered to air compartment, draw fresh air to each work plane from air compartment in the shaft bottom.
Air compartment adopts to grout with steel plate and combines, and with grouting the shutoff with the cavern, top 3mm steel plate, steel plate and country rock contact surface be with shutoff such as cotton yarns at construction transverse passage-way place, and seals with mortar or sprayed mortar; Positive hole section is directly made air door with steel plate, and sealing is with the construction transverse passage-way, and blower fan is erected on the shaped steel frame, firm supporting; In the air chimney corner, be made into air chimney with steel plate, smooth-going excessive, reduce resistance.
In the shaft bottom first transverse passage-way left side line end with mortar flag stone with its shutoff to haunch, with the vault sealing, and reserve three holes with the steel plate 6 of 3mm, two place's holes with inclined shaft twice air chimney insert, another place installs blower fan 7.The positive hole of right line end air compartment utilizes the steel plate 15 of 3mm with the full section sealing in positive hole, stays the conduct a survey passage of situations such as the interior blast of air compartment, blower fan of an iron gate 6 usefulness, reserves two holes as ventilation fan position 14 and 16.
Three, air compartment ventilates
After air compartment forms, blower fan 7 at left line end construction transverse passage-way place draws fresh air and supplies left line end work plane, at right line air compartment brattice place, one group of ventilation fan 14 carries out left line end 20 face-airings by the 3rd transverse passage-way 18, and another group ventilation fan 16 directly carries out right line end 17 face-airings.Along with the driving forward of work plane, continuous spreading air chimney, and, suitably increase air compartment according to the length of only driving.
Four, ventilation effect inspection
Utilize equipment such as digital dust tester, KT-601 type gas detecting alarm (oxygen), telaire-7001 type carbon dioxide detector, Z-700 type nitrogen oxide detector, check the ventilation effect of each work plane, specifically see Table 1 and table 2.
Gas detecting summary sheet 1
Anemometry table 2
Five, ventilation does not meet the demands
During face-airing situation difference, analyze ventilation system, revise the ventilation parameter.Begin to check from air compartment, check the sealing situation of air compartment, whether have leak out, loosening phenomenon, whether enlarge air compartment, reduce air chimney length, resistance; Whether check air pipeline, whether the irregularity place is arranged, increase flowing resistance, have airduct to break, leaking out influences the work plane air feed.
Six, increase the excavation mileage
Ventilation effect satisfies the work plane needs, then increases the excavation mileage.By this principle, with the increase of tunnel piercing length always can enlarge forward, prolong air compartment length, and air leak rate of air curtain is almost nil in air compartment, can greatly improve only Excavation Length.
Though embodiments of the invention have been described with reference to the drawings above, it will be understood by those skilled in the art that under the situation that does not break away from the scope of the invention and spirit, can make various modifications and variations to the present invention.Therefore, should be appreciated that the above embodiments are not restrictions, but the illustrating of various aspects.
Claims (7)
1. a long distance only driving tunnel air compartment relay method of ventilation may further comprise the steps:
Preparation of construction;
Air compartment construction is taked steel plate to be divided into air compartment on the tunnel or is utilized the positive hole of certain-length that air compartment is set in the section certain limit;
Air compartment ventilates, and utilizes air chimney and blower fan that fresh air is delivered to air compartment, again by air compartment draw fresh air to the tunnel each work plane;
The ventilation effect inspection of each work plane when ventilation effect does not satisfy the work plane needs, is analyzed ventilation system, revises the ventilation parameter, checks wind chamber sealing situation and air pipeline; When ventilation effect satisfies the work plane needs, increase the excavation mileage.
2. air compartment relay method of ventilation according to claim 1, wherein when the tunnel be two-wire list hole when not having the two holes in auxiliary cavern, two-wire and not having auxiliary cavern or inclined shaft or horizontal hole and advance the situation of two scope of operations in two-wire list hole or the two holes of two-wire or four scope of operations, on the tunnel, take steel plate to be divided into air compartment in the section certain limit.
3. air compartment relay method of ventilation according to claim 1 wherein when the tunnel is the situation of inclined shaft or horizontal hole three scope of operations entering the two holes of two-wire, utilizes the positive hole of certain-length that air compartment is set.
4. air compartment relay method of ventilation according to claim 3, wherein in the air compartment construction sequence, at first construct inclined shaft or horizontal hole, construction first transverse passage-way links to each other with inclined shaft or horizontal hole, offer second transverse passage-way at primary importance place apart from the first transverse passage-way certain distance, and enter right line construction from left line thus, after right line and the perforation of first transverse passage-way, turn to the right line end work plane of construction, construction is to being that the second place place of certain distance opens the 3rd transverse passage-way apart from first transverse passage-way, utilizes the positive hole of right line between first transverse passage-way and the 3rd transverse passage-way as air compartment.
5. according to any described air compartment relay method of ventilation in the claim 1 to 4, wherein air compartment storage air quantity is greater than 2000m
3
6. air compartment relay method of ventilation according to claim 4, wherein the distance between first transverse passage-way and second transverse passage-way is 88m, the distance between first transverse passage-way and the 3rd transverse passage-way is 888m.
7. air compartment relay method of ventilation according to claim 4, wherein air compartment length is 860m, cross-sectional area is 104.18m
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010587780 CN102080560B (en) | 2010-12-15 | 2010-12-15 | Tunnel wind room relay ventilation method for long blind heading |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010587780 CN102080560B (en) | 2010-12-15 | 2010-12-15 | Tunnel wind room relay ventilation method for long blind heading |
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| CN102080560A true CN102080560A (en) | 2011-06-01 |
| CN102080560B CN102080560B (en) | 2013-03-13 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806281A (en) * | 2015-03-04 | 2015-07-29 | 中铁十七局集团第二工程有限公司 | Inclined shaft ventilation based high pressure air supply system in long tunnel hole |
| CN107387145A (en) * | 2017-08-04 | 2017-11-24 | 西南交通大学 | A kind of major long tunnel ventilating system of long range air-supply |
| CN109667614A (en) * | 2018-12-18 | 2019-04-23 | 中铁十六局集团有限公司 | One kind being used for long distance tunnel relay-type method of ventilation |
| CN111677542A (en) * | 2020-04-05 | 2020-09-18 | 中铁二院工程集团有限责任公司 | Integral special-shaped air duct for long-distance tunnel construction ventilation and construction method |
| CN113482690A (en) * | 2021-08-16 | 2021-10-08 | 中铁第六勘察设计院集团有限公司 | Calculation method for air distribution of tunnel ventilation system of ramp air exhaust type single-ramp highway |
| CN113685218A (en) * | 2021-08-31 | 2021-11-23 | 中铁二院工程集团有限责任公司 | Tunnel air supply system based on oxygen-enriched air storage air oxygenation |
| CN113685219A (en) * | 2021-08-31 | 2021-11-23 | 中铁二院工程集团有限责任公司 | Tunnel press-in type ventilation relay system |
| CN113898395A (en) * | 2021-11-09 | 2022-01-07 | 中煤第三建设（集团）有限责任公司 | Ventilation method and ventilation system for extra-long inclined shaft of coal mine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104806281A (en) * | 2015-03-04 | 2015-07-29 | 中铁十七局集团第二工程有限公司 | Inclined shaft ventilation based high pressure air supply system in long tunnel hole |
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| CN107387145A (en) * | 2017-08-04 | 2017-11-24 | 西南交通大学 | A kind of major long tunnel ventilating system of long range air-supply |
| CN107387145B (en) * | 2017-08-04 | 2023-09-15 | 西南交通大学 | Long-long tunnel ventilation system with long-distance air supply function |
| CN109667614A (en) * | 2018-12-18 | 2019-04-23 | 中铁十六局集团有限公司 | One kind being used for long distance tunnel relay-type method of ventilation |
| CN111677542A (en) * | 2020-04-05 | 2020-09-18 | 中铁二院工程集团有限责任公司 | Integral special-shaped air duct for long-distance tunnel construction ventilation and construction method |
| CN113482690A (en) * | 2021-08-16 | 2021-10-08 | 中铁第六勘察设计院集团有限公司 | Calculation method for air distribution of tunnel ventilation system of ramp air exhaust type single-ramp highway |
| CN113685218A (en) * | 2021-08-31 | 2021-11-23 | 中铁二院工程集团有限责任公司 | Tunnel air supply system based on oxygen-enriched air storage air oxygenation |
| CN113685219A (en) * | 2021-08-31 | 2021-11-23 | 中铁二院工程集团有限责任公司 | Tunnel press-in type ventilation relay system |
| CN113898395A (en) * | 2021-11-09 | 2022-01-07 | 中煤第三建设（集团）有限责任公司 | Ventilation method and ventilation system for extra-long inclined shaft of coal mine |
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Inventor after: Dou Xiaotian Inventor after: Yang Yanling Inventor after: Zhao Jintian Inventor after: Chen Qinghuai Inventor after: He Zhihong Inventor after: Li Zhankui Inventor after: Hu Yongqiang Inventor after: Li Zhijun Inventor after: Chen Dajun Inventor after: Zhang Xuejun Inventor before: Dou Xiaotian Inventor before: Zhao Jintian Inventor before: Chen Qinghuai Inventor before: He Zhihong Inventor before: Li Zhankui Inventor before: Hu Yongqiang Inventor before: Chen Dajun Inventor before: Zhang Xuejun |
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Free format text: CORRECT: INVENTOR; FROM: DOU XIAOTIAN ZHAO JINTIAN CHEN QINGHUAI HE ZHIHONG LI ZHANKUI HU YONGQIANG CHEN DAJUN ZHANG XUEJUN TO: DOU XIAOTIAN ZHAO JINTIAN CHEN QINGHUAI HE ZHIHONG LI ZHANKUI HU YONGQIANG LI ZHIJUN CHEN DAJUN ZHANG XUEJUN YANG YANLING |
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Granted publication date: 20130313 Termination date: 20191215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |