CN205858397U - Inclined shaft and positive hole ventilating system in constructing tunnel - Google Patents
Inclined shaft and positive hole ventilating system in constructing tunnel Download PDFInfo
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- CN205858397U CN205858397U CN201620696709.4U CN201620696709U CN205858397U CN 205858397 U CN205858397 U CN 205858397U CN 201620696709 U CN201620696709 U CN 201620696709U CN 205858397 U CN205858397 U CN 205858397U
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- ventilation
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- positive hole
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Abstract
This utility model relates to construction ventilation of tunnel technology, it is specially inclined shaft and positive hole ventilating system in a kind of constructing tunnel, solve existing tunnel draft type and cannot meet the defect of working environment requirement in tunnel, including positive hole, put down and lead, inclined shaft, transverse passage-way, axial flow blower is installed at inclined shaft hole, ventilation inclined tube is laid in inclined shaft, a left side is laid in positive hole, right ventilation duct, transverse passage-way one end with flat lead through, the other end and Zheng Dong junction are provided with closing headwall, transverse passage-way leads composition relay wind cabin with flat, close and offer two air outlets on headwall, two air inlets, relay wind cabin is outside installs two relay air blowers, two air inlets and two ventilation inclined tube connections, two air outlets and two relay air blowers connect, relay air blower is with left, right ventilation duct connects.The ventilation smoke exhaust time is short, and flowing resistance is little, accelerates construction speed, improves operation comfortableness, thus improves labor efficiency, and economic benefit and social benefit are notable.
Description
Technical field
This utility model relates to construction ventilation of tunnel technology, is specially inclined shaft and positive hole ventage in a kind of constructing tunnel
System.
Background technology
Ventilating system be constructing tunnel and operation during important component part, ventilating system reasonable Arrangement impact
The ventilation quality in tunnel, distinguished and admirable control during breaking out of fire, construction operation environment, the personal safety of workmen, and
The normal operation of plant equipment.Owing to tunnel environment has certain closure, the constructions such as tunnel inner air flow is relatively slow, explosion
The dust smog caused is difficult to dissipate, and pollutant levels are higher.Therefore, the construction of rational method of ventilation formula tunnel safety is effective
Ensure.
Traditional ventilation by pipes mode is to use forced ventilation, installation tunnel, inclined shaft hole to lead in tunnel slope work area
Blower fan, and be respectively mounted blower fan one at Zheng Dong two ends, but due in slope mouth or inclined shaft center because there is corner, for folding
Linear structure, causes wind energy to be lost after corner very big, and axial flow blower rate is the highest, and wind speed reduces, smoke evacuation difficulty in tunnel, temperature
Degree height, air quality is poor, and ventilation effect is bad, and in causing tunnel, construction environment is poor, it is impossible to meet working environment in tunnel will
Ask.
Summary of the invention
This utility model is fold-line-shaped structure to solve existing tunnel draft type due to inclined shaft, causes wind energy through turning
Losing very big behind angle, axial flow blower rate is the highest, and wind speed reduces and cannot meet the defect of working environment requirement in tunnel, it is provided that one
Plant inclined shaft and positive hole ventilating system in constructing tunnel.
This utility model adopts the following technical scheme that realization: inclined shaft and positive hole ventilating system in constructing tunnel, including
The inclined shaft that the positive hole peace be arrangeding in parallel is led and directly intersected with positive hole, positive hole peace is provided with transverse passage-way, inclined shaft hole between leading
Mouthful axial flow blower is installed, in inclined shaft, lays the two ventilation inclined tubes being connected with axial flow blower, in positive hole laying respectively with positive hole
Two ends connect left ventilation duct and right ventilation duct, innovative point of the present utility model be transverse passage-way one end with put down lead through, another
End and Zheng Dong junction are provided with closing headwall, and transverse passage-way is led composition relay wind cabin with flat, closed and offer two air outlets on headwall
With two air inlets, relay wind cabin is outside installs two relay air blowers, and two of which air inlet leads to two in inclined shaft respectively
Wind inclined tube connects, and two air outlets are connected with two relay air blowers respectively, the outfan of relay air blower and the left ventilation in positive hole
The connection of pipe, right ventilation duct.
In order to optimize the structure of this ventilating system further, improving its function, this utility model has also carried out following structure
Design,
Described ventilation inclined tube uses PVC double slide fastener air duct, has the advantages such as density height, good, the length in service life of intensity.
Described relay wind cabin lower inside offers gutter, lays drain pipe in gutter, and drainpipe outlet stretches out envelope
Closed end wall.
Offer access hole bottom described closing headwall, airtight door curtain is installed at access hole, provides inspection for maintainer
Entrance, installs airtight door curtain to ensure that relay wind cabin seal well, does not leaks out.
Use structure of the present utility model to design, utilize existing airtight flat lead with transverse passage-way as relay wind cabin, will be tiltedly
The fresh wind provided at well opening is evacuated in relay wind cabin, makes distinguished and admirable concentration, and the eddy flow produced in relay wind cabin is less, and blast increases
Add, then by the relay air blower outside relay wind cabin, left and right ventilation duct by distinguished and admirable Zheng Dong two ends of delivering to, thus reduce tiltedly
Well wind loss, it also avoid simultaneously between the Fans of original Zheng Dong two ends two to suction effect, be greatly improved blower fan utilization rate,
Fan efficiency improves；Distinguished and admirable compare concentration, so that wind loss reduces.
This utility model ventilation effect is good, and the ventilation smoke exhaust time is short, and flowing resistance is little, accelerates construction speed, for tunnel
Construction provides a good working environment, highly beneficial to labor protection and safe construction, improves operation comfortableness, from
And improve labor efficiency, economic benefit and social benefit are notable.
Accompanying drawing explanation
Fig. 1 is site plan of the present utility model；
Fig. 2 is relay wind cabin schematic cross-sectional view in Fig. 1；
Fig. 3 is the sectional schematic diagram that in Fig. 1, transverse passage-way and Zheng Dong intersection close headwall；
Fig. 4 is inclined shaft schematic cross-sectional view；
In figure: the positive hole of 1-；2-is flat to be led；3-inclined shaft；4-transverse passage-way；5-axial flow blower；6-ventilation inclined tube；The left ventilation duct of 7-；
The right ventilation duct of 8-；9-closes headwall；10-air outlet；11-air inlet；12-relay air blower；13-gutter；14-drain pipe；15-
Access hole.
Detailed description of the invention
Inclined shaft and positive hole ventilating system in constructing tunnel, as it is shown in figure 1, include positive hole 1 peace be arrangeding in parallel lead 2 and
The inclined shaft 3 directly intersected with positive hole, positive hole peace is provided with transverse passage-way 4 between leading, inclined shaft hole is provided with axial flow blower 5, inclined shaft
Two ventilation inclined tubes 6 that interior laying is connected with axial flow blower, lay in positive hole the left ventilation duct 7 that is connected with Zheng Dong two ends respectively and
Right ventilation duct 8, transverse passage-way one end is led through with flat, and the other end and Zheng Dong junction are provided with closing headwall 9, and transverse passage-way leads structure with flat
Become relay wind cabin, as shown in Figure 2,3, close and offer two air outlets 10 and two air inlets 11, outside relay wind cabin on headwall
Installing two relay air blowers 12, two of which air inlet connects with two ventilation inclined tubes in inclined shaft respectively, and two air outlets divide
Not being connected with two relay air blowers, the outfan of relay air blower connects with the left ventilation duct in positive hole, right ventilation duct.
Ventilation inclined tube 6 uses PVC double slide fastener air duct；Relay wind cabin lower inside offers gutter 13, lays in gutter
Drain pipe 14, drainpipe outlet stretches out closing headwall；Close and offer access hole 15 bottom headwall 9, sealed door is installed at access hole
Curtain.
When being embodied as, the axial flow blower at slope mouth selects SDF(c)-NO12.5, power is 75 × 4 kw, during installation
Installing beyond the 20m of hole, support consolidates, it is to avoid during operating, vibration is rocked, rain deflector of setting up defences above axial flow blower；Ventilation inclined tube
Use PVC double slide fastener air duct, save long 20m, average hundred meters of air leak rate of air curtain 0.67%, joint air leak rate of air curtain 0.179%, ventilation inclined tube is installed
Time, cemented side seam firmly smoothes out, and joint is intact tightly, hang ventilation inclined tube to put down, suitable, straight, along vault midline position, beat every 5m
Eye installs high-strength expanding bolts, cloth φ 6mm reinforcing bar bracing wire, strains with tightener, and sets φ 10mm nylon rope hanging ring；Use PVC
High-strength double slide fastener airduct, it is necessary in making it, anti-limit keeps consistent with wind direction, the suspention of ventilation inclined tube to consolidate, and suspension height is consistent,
Removing redundance after the tension of ventilation inclined tube, set up steel ring joint, binding is firmly；
Relay air blower power is 110*2 kw blower fan, completes to align the ventilation in large and small mileage direction, hole by relay wind cabin
Smoke evacuation work, installs the drain pipe of Φ 150 mm in relay wind cabin, reserved Φ 150cm air holes 4 on the closing headwall of relay wind cabin
Individual, 2 is fresh air inlet, and 2 is exhaust vent, reserved 80 × 80cm access hole, and installs airtight door curtain.
Case history:
Extensively passing to four mark No. 1 tunnels of general canopy before railway Capacity Expansion Project station, Dali, this tunnel is positioned at south, Nanhua～Pu Peng
Interval, double track tunnel, left and right line distance between centers of tracks 4.4～5.1m, the one side being designed as 10.5 ‰ goes up a slope, tunnel starting point mileage D2K78
+ 400 mileage D2K92+195, long 13.795km to terminal, for the longest controlling weight difficult point engineering completely；Original design left in circuit
Side arranges through the putting down in a bicycle road and leads [PDK78+440 (D2K78+440) PDK83+100 (D2K83+100)], in D1K83+100
Set the 1# inclined shaft of long 2120m on the right side of circuit, on the right side of circuit, set up 2# inclined shaft, inclined shaft long 2010m discrepancy in elevation 198m, the comprehensive gradient
9.85%.No. 2 the inclined shaft work area plan positive hole 4015m of construction, big mileage plan construction 1845m, completed 1141m, little mileage plan
Construction 2170, has completed 1161m.
No. 2 inclined shaft work areas use forced ventilation, and hole is installed tunnel fan and used 2 power to be 110k × 2kw, and 75
× 4 kw ventilation blowers, airduct uses φ 1500mm/ pneumatic hose, and installs blower fan one at the big mileage direction 87+800 of positive hole,
Installing blower fan one at little mileage direction 86+000, power is 55 × 2kw, and blower fan is 900m away from inclined shaft and Zheng Dong crossing.2
Number inclined shaft hole wind direction is essentially northwest wind direction, the most just to hole, dries in hole, and inclined shaft is designed as broken line in addition, in employing
Stating aeration structure, ventilation smoke exhaust difficulty, smoke evacuation difficulty in hole, temperature is high, and air quality is poor, and ventilation effect is bad, above-mentioned ventilation
Scheme can not meet normal construction in hole.
After using aeration structure described in the utility model, distinguished and admirable concentration, the eddy flow produced in relay wind cabin is less, blast
Increase, then deliver to Zheng Dong two ends by distinguished and admirable by the relay air blower outside relay wind cabin, left and right ventilation duct, thus reduce
Inclined shaft wind loss, it also avoid simultaneously between the Fans of original Zheng Dong two ends two to suction effect, be greatly improved blower fan utilize
Rate, fan efficiency improves；Distinguished and admirable compare concentration, so that wind loss reduces.
Claims (4)
1. inclined shaft and a positive hole ventilating system in constructing tunnel, including positive hole (1) peace be arrangeding in parallel lead (2) and with just
The inclined shaft (3) that hole is directly intersected, positive hole peace is provided with transverse passage-way (4) between leading, inclined shaft hole is provided with axial flow blower (5), tiltedly
Lay the two ventilation inclined tubes (6) being connected with axial flow blower in well, in positive hole, lay the left ventilation being connected with Zheng Dong two ends respectively
Pipe (7) and right ventilation duct (8), is characterized in that transverse passage-way one end and lead through with putting down, the other end and Zheng Dong junction are provided with blind end
Wall (9), transverse passage-way and flat composition relay wind cabin of leading, closing headwall offers two air outlets (10) and two air inlets (11),
Relay wind cabin is outside installs two relay air blowers (12), and two of which air inlet is respectively with two ventilation inclined tubes in inclined shaft even
Logical, two air outlets are connected with two relay air blowers respectively, the outfan of relay air blower and the left ventilation duct in positive hole, right ventilation
Pipe connects.
In constructing tunnel the most according to claim 1, inclined shaft and positive hole ventilating system, is characterized in that ventilation inclined tube (6) uses
PVC double slide fastener air duct.
In constructing tunnel the most according to claim 1 and 2, inclined shaft and positive hole ventilating system, is characterized in that inside relay wind cabin
Gutter (13) is offered in lower section, lays drain pipe (14) in gutter, and drainpipe outlet stretches out closing headwall.
Inclined shaft and positive hole ventilating system in constructing tunnel the most according to claim 1 and 2, is characterized in that closing headwall (9)
Access hole (15) is offered in bottom, installs airtight door curtain at access hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620696709.4U CN205858397U (en) | 2016-07-05 | 2016-07-05 | Inclined shaft and positive hole ventilating system in constructing tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620696709.4U CN205858397U (en) | 2016-07-05 | 2016-07-05 | Inclined shaft and positive hole ventilating system in constructing tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858397U true CN205858397U (en) | 2017-01-04 |
Family
ID=57644486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620696709.4U Active CN205858397U (en) | 2016-07-05 | 2016-07-05 | Inclined shaft and positive hole ventilating system in constructing tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858397U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112523774A (en) * | 2020-12-24 | 2021-03-19 | 中铁二十局集团第一工程有限公司 | Inclined shaft auxiliary main tunnel construction ventilation system |
| 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 |
-
2016
- 2016-07-05 CN CN201620696709.4U patent/CN205858397U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112523774A (en) * | 2020-12-24 | 2021-03-19 | 中铁二十局集团第一工程有限公司 | Inclined shaft auxiliary main tunnel construction ventilation system |
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |