CN202520352U - Large-cross section gas outburst tunnel ventilating system - Google Patents
Large-cross section gas outburst tunnel ventilating system Download PDFInfo
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- CN202520352U CN202520352U CN 201220079702 CN201220079702U CN202520352U CN 202520352 U CN202520352 U CN 202520352U CN 201220079702 CN201220079702 CN 201220079702 CN 201220079702 U CN201220079702 U CN 201220079702U CN 202520352 U CN202520352 U CN 202520352U
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- tunnel
- positive hole
- adit
- parallel
- section gas
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Abstract
The utility model discloses a large-cross section gas outburst tunnel ventilating system, which includes a main tunnel and a parallel adit, wherein the main tunnel and the parallel adit are communicated; and air ducts and press-in fans following along with the advancing of the excavating working surface of the tunnel are mounted in the main tunnel and the parallel adit. The large-cross section gas outburst tunnel ventilating system is characterized by also including a main fan and a jet fan, wherein the main fan is mounted on one side of the portal of the parallel adit and is higher than the air draft opening at the portal of the parallel adit; the jet fan is mounted at the air intake section of the main tunnel; air doors are arranged at the portal of the parallel adit and the air draft opening; the main tunnel air duct and the parallel adit air duct in the main tunnel are arranged on the wall body of the left and the right sides of the tunnel line 3.5 m above the rail surface; and the main tunnel and the parallel adit are communicated through a cross passage to form a roadway mixed ventilating system. The large-cross section gas outburst tunnel ventilating system adopts the main fan roadway ventilation, so as to effectively prevent the local gas accumulation, improves the ventilation conditions, and ensures the ventilation effect.
Description
Technical field
The utility model relates to the outstanding tunnel ventilation system of a kind of big section gas.
Background technology
When the coal seam of pressure is opened in the outstanding tunnel of gas, a large amount of gas emissions in the short time will cause that gas density sharply raises in the hole, as fast gas density in the hole not being dropped in the safe range, serious accident might take place.And along with the propelling of tunnel excavation work plane, portable blower also will follow up thereupon, so the distance of air inlet duct and air-return duct is also with increasing, because air refluxes, gas and dust concentration can increase in the air intake, all can form security incident.
The utility model content
The utility model technical problem to be solved provides the outstanding tunnel ventilation system of a kind of big section gas, adopts main fan ventilation by ducts, improves ventilation condition, guarantees ventilation effect.
The utility model technical problem to be solved realizes through following technical scheme:
A kind of big section gas is given prominence to the tunnel ventilation system; Comprise Zheng Dong, flat leading; Positive hole peace connects between leading, and the forced blower fan that positive hole peace all is equipped with air duct and follows up along with the propelling of tunnel excavation work plane in leading is characterized in that: also comprise main fan and jet blower; Described main fan is installed in flat pilot tunnel mouth one side and highly exceeds on the exhausting road junction at flat pilot tunnel mouth place, and jet blower is installed at the wind inlet section place in positive hole.
Said flat pilot tunnel mouth and place, exhausting road junction are equipped with air door.
Positive hole air duct and flat ventilating duct are arranged in barrel circuit left and right sides on the body of wall of the above 3.5m of rail level in the said positive hole.
Said positive hole peace is led two forced blower fans respectively is set, and the blower fan installation site will be positioned at the peaceful 20-50m place, transverse passage-way back that leads perforation place, positive hole along with the tunnel excavation advance of the face.
Between leading, said positive hole peace connects and formation tunnel combined ventilation system through transverse passage-way.
Said transverse passage-way is every between positive hole peace is led to be provided with one at a distance from the 300-400m distance.
The utility model following beneficial effect arranged:
1. adopt main fan ventilation by ducts; Improve ventilation condition: the one, when having opened the pressure coal seam in the outstanding tunnel of gas; A large amount of gas emissions in short time; To cause that gas density sharply raises in the hole,, serious accident might take place as fast gas density in the hole not being dropped in the safe range; The 2nd, after tunnelling footage surpassed 2000m, air returning ratio was more tired, for improving ventilation condition, started main fan, adopted main fan ventilation by ducts pattern can shorten the ventilation smoke exhaust time; The 3rd, when breaking down, forced blower fan shuts down for a long time, and gas density exceeds standard around the forced blower fan, and forced blower fan restarts security incident might take place.Can adopt main fan ventilation by ducts pattern through opening main fan, make that gas density is reduced to below the safe concentration fast around the forced blower fan, be that the forced blower fan of clean boot is created necessary condition.2. adopt fluidics, guarantee ventilation effect: along with the propelling of tunnel excavation work plane, forced blower fan also will follow up thereupon, so the distance of air inlet duct and air-return duct is also with increasing.Because air refluxes, gas and dust concentration can increase in the air intake.In order to ensure the quality of construction air intake, adopt segmentation that jet blower relay drainage is installed at air inlet duct, the fresh air outside the hole is blown into air inlet duct, improve ventilation effect.In local excavation's irregularity section, the local section of caving in, adopt ventilation by ducts, still be easy to generate local gas and assemble, adopt jet blower can dispel air mass, effectively prevent the local gas gathering.
Description of drawings
Fig. 1 the utility model structural representation
Among the figure, 1. positive hole, 2. flatly lead, 3. main fan, 4. jet blower, 5. forced blower fan, 6. transverse passage-way, 7. positive hole air duct, 8. air door, 9. flat ventilating duct
The specific embodiment
A kind of big section gas shown in Figure 1 is given prominence to the tunnel ventilation system; Comprise positive hole 1, flatly lead 2; Between leading 2, positive hole 1 peace connects through transverse passage-way 6; Positive hole 1, tunnel is an air inlet duct, through forced blower fan 5 fresh air outside the hole is guided to excavated surface, and discharge and dilution work plane are rich in the gas of gas, dust; The tunnel is put down and led 2 is air-return duct, through pressure reduction the mist of work plane is discharged outside the hole; Transverse passage-way 6 is every between positive hole 1 peace leads 2 opens one at a distance from the 300-400m distance, plays maintenance and drainage during the operation, and construction period is used to arrange air duct, is the part of ventilation system simultaneously.Positive hole 1 peace is led the forced blower fan 5 that air duct all is installed and follows up along with the propelling of tunnel excavation work plane in 2; Said positive hole 1 peace is led 2 two forced blower fans 5 respectively is set; Forced blower fan 5 installation sites will be positioned at 20-50m place, transverse passage-way 6 back along with the tunnel excavation advance of the face.
Ventilation system also comprises main fan 3, jet blower 4, and described main fan 3 is installed in to put down and leads 2 holes, one side and highly exceed flat leading on the exhausting road junction of locating at 2 holes, and positive hole 1 wind inlet section is installed jet blower 4.Shut down for a long time when forced blower fan 5 breaks down, gas density exceeds standard around the forced blower fan 5, and forced blower fan 5 restarts security incident might take place.Can adopt main fan 3 ventilation by ducts patterns through opening main fan 3, make that gas density is reduced to below the safe concentration fast around the forced blower fan 5, be that the forced blower fan 5 of clean boot is created necessary conditions.Along with the propelling of tunnel excavation work plane, forced blower fan 5 also will follow up thereupon, so the distance of air inlet duct and air-return duct is also with increasing.Because air refluxes, gas and dust concentration can increase in the air intake.In order to ensure the quality of construction air intake, adopt segmentation that jet blower relay drainage is installed at air inlet duct, the fresh air outside the hole is blown into air inlet duct, improve ventilation effect.
Saidly flat lead 2 holes, place, exhausting road junction is equipped with air door 8, size is set according to concrete section.
Positive hole air duct 7 in the said positive hole 1 is arranged in its barrel circuit left and right sides on the body of wall of the above 3.5m of rail level with flat ventilating duct 9.Positive hole air duct 7 with flat ventilating duct 9 every 5m rivet is set and body of wall is fixed, and with No. 8 iron wire suspensions, straight firm to guarantee.
Claims (6)
1. one kind big section gas is given prominence to the tunnel ventilation system; Comprise Zheng Dong, flat leading; Positive hole peace connects between leading, and the forced blower fan that positive hole peace all is equipped with air duct and follows up along with the propelling of tunnel excavation work plane in leading is characterized in that: also comprise main fan and jet blower; Described main fan is installed in flat pilot tunnel mouth one side and highly exceeds on the exhausting road junction at flat pilot tunnel mouth place, and jet blower is installed at the wind inlet section place in positive hole.
2. big section gas as claimed in claim 1 is given prominence to the tunnel ventilation system, it is characterized in that: said flat pilot tunnel mouth and place, exhausting road junction are equipped with air door.
3. big section gas as claimed in claim 1 is given prominence to the tunnel ventilation system, it is characterized in that: said positive hole air duct and flat ventilating duct are arranged in its barrel circuit left and right sides on the body of wall of the above 3.5m of rail level.
4. big section gas as claimed in claim 1 is given prominence to the tunnel ventilation system; It is characterized in that: said positive hole peace is led two forced blower fans respectively is set; The blower fan installation site will be positioned at the peaceful 20-50m place, transverse passage-way back that leads perforation place, positive hole along with the tunnel excavation advance of the face.
5. big section gas as claimed in claim 1 is given prominence to the tunnel ventilation system, it is characterized in that: connect and formation tunnel combined ventilation system through transverse passage-way between said positive hole peace is led.
6. big section gas as claimed in claim 5 is given prominence to the tunnel ventilation system, it is characterized in that: said transverse passage-way is every between positive hole peace is led to be provided with one at a distance from the 300-400m distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220079702 CN202520352U (en) | 2012-03-06 | 2012-03-06 | Large-cross section gas outburst tunnel ventilating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220079702 CN202520352U (en) | 2012-03-06 | 2012-03-06 | Large-cross section gas outburst tunnel ventilating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520352U true CN202520352U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220079702 Expired - Fee Related CN202520352U (en) | 2012-03-06 | 2012-03-06 | Large-cross section gas outburst tunnel ventilating system |
Country Status (1)
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| CN (1) | CN202520352U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527236A (en) * | 2013-10-16 | 2014-01-22 | 中铁八局集团有限公司 | Gas tunnel mixed type ventilation method |
| CN105986833A (en) * | 2015-01-29 | 2016-10-05 | 西南交通大学 | Inclined shaft auxiliary type tunnel ventilation system with partition plates |
| CN109139081A (en) * | 2018-09-20 | 2019-01-04 | 中铁局集团第五工程有限公司 | A kind of high methane Extra Long Tunnel Construction method of ventilation |
| CN110094231A (en) * | 2019-04-03 | 2019-08-06 | 河海大学 | It is a kind of prevention and reduction deep layer regulate and store tunnel trapped air mass harm structure |
| CN111305893A (en) * | 2020-03-30 | 2020-06-19 | 中国十九冶集团有限公司 | System and method for discharging gas in horizontal guide pipe |
| CN111365056A (en) * | 2020-03-31 | 2020-07-03 | 中铁五局集团有限公司 | Staged ventilation method based on complex cavern group construction |
| CN115653662A (en) * | 2022-11-18 | 2023-01-31 | 太原理工大学 | Ventilation system of long-distance single-head roadway |
-
2012
- 2012-03-06 CN CN 201220079702 patent/CN202520352U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527236A (en) * | 2013-10-16 | 2014-01-22 | 中铁八局集团有限公司 | Gas tunnel mixed type ventilation method |
| CN105986833A (en) * | 2015-01-29 | 2016-10-05 | 西南交通大学 | Inclined shaft auxiliary type tunnel ventilation system with partition plates |
| CN109139081A (en) * | 2018-09-20 | 2019-01-04 | 中铁局集团第五工程有限公司 | A kind of high methane Extra Long Tunnel Construction method of ventilation |
| CN110094231A (en) * | 2019-04-03 | 2019-08-06 | 河海大学 | It is a kind of prevention and reduction deep layer regulate and store tunnel trapped air mass harm structure |
| CN110094231B (en) * | 2019-04-03 | 2024-02-23 | 河海大学 | Structure for preventing and reducing damage of detention air mass of deep regulation tunnel |
| CN111305893A (en) * | 2020-03-30 | 2020-06-19 | 中国十九冶集团有限公司 | System and method for discharging gas in horizontal guide pipe |
| CN111365056A (en) * | 2020-03-31 | 2020-07-03 | 中铁五局集团有限公司 | Staged ventilation method based on complex cavern group construction |
| CN111365056B (en) * | 2020-03-31 | 2021-10-15 | 中铁五局集团有限公司 | Staged ventilation method based on complex cavern group construction |
| CN115653662A (en) * | 2022-11-18 | 2023-01-31 | 太原理工大学 | Ventilation system of long-distance single-head roadway |
| CN115653662B (en) * | 2022-11-18 | 2024-01-30 | 太原理工大学 | Ventilating system of long-distance single-head roadway |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20210306 |