CN114320423A - Roadway type construction ventilation method for advanced double main holes of parallel middle-guide tunnel - Google Patents
Roadway type construction ventilation method for advanced double main holes of parallel middle-guide tunnel Download PDFInfo
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- CN114320423A CN114320423A CN202210032964.9A CN202210032964A CN114320423A CN 114320423 A CN114320423 A CN 114320423A CN 202210032964 A CN202210032964 A CN 202210032964A CN 114320423 A CN114320423 A CN 114320423A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005641 tunneling Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005422 blasting Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 230000009323 psychological health Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- -1 automobile exhaust Substances 0.000 description 1
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Abstract
The invention relates to the technical field of tunnel ventilation, in particular to a roadway type construction ventilation method for advanced double main holes of a parallel middle guide tunnel, which comprises a left tunnel, a middle guide tunnel and a right tunnel which are sequentially arranged in parallel, wherein the middle guide tunnel is constructed by an advanced main hole of a TBM (tunnel boring machine) method, and a transverse vehicle-driving hole is formed between the left tunnel and the middle guide tunnel and between the middle guide tunnel and the right tunnel; a first air pipe group is arranged in the cross-car-driving hole and is communicated with the left tunnel and the right tunnel, a second air pipe group is arranged in the middle guide tunnel and penetrates through the cross-car-driving hole to be communicated with the left tunnel and the right tunnel); one end of the second air pipe set, which is positioned in the middle guide tunnel, is connected with a fan set, and one end of the first air pipe set, which is positioned in the transverse hole for driving, is connected with two fan sets. The invention solves the problem of poor ventilation effect of the structural tunnel in the prior art.
Description
Technical Field
The invention relates to the technical field of tunnel ventilation, in particular to a roadway type construction ventilation method for advanced double main holes of a parallel middle guide tunnel.
Background
The ventilation in the long and large tunnel construction is not only taken as a technical means for removing dust and harmful gases in the tunnel, but also has important influence on the whole industrial chain of the tunnel engineering construction. Meanwhile, in the construction period of the long and large tunnel, in order to shorten the construction period, a parallel pilot tunnel is usually arranged between the two main tunnels, the rapid construction of the two main tunnels is assisted by a vehicle transverse tunnel by virtue of the rapid tunneling advantage of the parallel pilot tunnel, and a plurality of tunnel faces are organized to simultaneously tunnel in the peak period, namely the construction method of 'long tunnel short driving'. The auxiliary main tunnel can be used during the construction of the parallel pilot tunnel, and can be used as an emergency rescue channel during the operation. For example, a 3-hole 4-shaft design scheme is adopted for a tunnel of a super-long expressway in Xinjiang, wherein a parallel pilot tunnel is tunneled by a TBM (tunnel boring machine) method, and the parallel pilot tunnel TBM is used for rapid advance to assist the drilling and blasting method of a left tunnel and a right tunnel to rapidly construct by a cross car tunnel.
Along with simultaneous tunneling of a plurality of tunnel faces in the tunnel, the distance of one-end tunneling is continuously increased, the maximum length of the tunnel face from the tunnel opening reaches more than 10km, and toxic and harmful gases such as blasting smoke, automobile exhaust, sprayed concrete dust and the like generated in tunnel face construction in the peak period cannot be discharged, so that the physical and psychological health of tunnel constructors is harmed, and the construction efficiency is influenced.
Disclosure of Invention
The invention aims to provide a roadway type construction ventilation method for advanced double main holes of a parallel middle-guide tunnel, and solves the problem of poor ventilation effect of the tunnel in the prior art.
The invention aims to realize the following technical scheme that the roadway type construction ventilation method for the advanced double main holes of the parallel middle guide tunnel comprises a left tunnel, a middle guide tunnel and a right tunnel which are sequentially arranged in parallel, wherein the middle guide tunnel is constructed by an advanced main hole of a TBM (tunnel boring machine) method, and a transverse vehicle-driving hole is formed between the left tunnel and the middle guide tunnel and between the middle guide tunnel and the right tunnel; a first air pipe group is arranged in the cross-car-driving hole and is communicated with the left tunnel and the right tunnel, a second air pipe group is arranged in the middle guide tunnel and penetrates through the cross-car-driving hole to be communicated with the left tunnel and the right tunnel; one end of the second air pipe set, which is positioned in the middle guide tunnel, is connected with a fan set, and one end of the first air pipe set, which is positioned in the transverse hole for driving, is connected with two fan sets.
It should be noted that, the construction of the middle-guide tunnel ahead of the left tunnel and the right tunnel utilizes the advantage of the middle-guide tunnel ahead to open up the main tunnel auxiliary working face at the driving cross tunnel, and the short driving of the long tunnel is realized.
The number of the transverse holes is a plurality of and the transverse holes are arranged in parallel; the left tunnel is provided with a left tunnel face, the right tunnel is provided with a right tunnel face, and the middle guide tunnel is provided with a middle hole face; the left tunnel face, the right tunnel face and the middle tunnel face are all located at one end of the middle guide tunnel; a first left tunnel face and a second left tunnel face are arranged on one side, close to the tunnel face of the middle tunnel, of the left tunnel face in parallel; and a right tunnel face are arranged on one side of the right tunnel face close to the middle tunnel face in parallel.
It should be noted that the materials in different tunnels are dispersed and transported through a plurality of vehicle transverse holes.
The fan group comprises a first axial flow fan and a second axial flow fan, and the fan group comprises a third axial flow fan and a fourth axial flow fan; the first air pipe group comprises a third air pipe and a fourth air pipe, and the second air pipe group comprises a first air pipe and a second air pipe; first axial fan passes through first tuber pipe does well hole face air feed, second axial fan passes through the second tuber pipe does left side two face air feed, third axial fan passes through the third tuber pipe does left side tunnel face air feed, fourth axial fan passes through the fourth tuber pipe does right side tunnel face air feed.
It should be noted that, through a plurality of tuber pipes and axial fan better to the tunnel ventilation.
The first axial flow fan is connected with two tee joints and two first auxiliary pipes through a first air pipe to supply air to the right first palm surface and the right second palm surface; and the second axial flow fan is connected with a tee joint and a second auxiliary pipe through a second air pipe to supply air to the left tunnel face.
It should be noted that the ventilation of the tunnel branch is realized through the connection of the three-way joint and the secondary pipe.
The driving cross hole is provided with the third axial flow fan, and a closed door is arranged at the end communicated with the left tunnel; the vehicle running cross hole is provided with the fourth axial flow fan, and a closed door is also arranged at the end communicated with the right tunnel.
It should be noted that, by providing the closing door to close the tunnel, the flow path of the fresh air is clear and the ventilation efficiency is high.
Anemometers are arranged on the left first palm surface, the left second palm surface, the right first palm surface and the right second palm surface; the transverse hole is provided with a jet fan; the first secondary pipe and the junction of three way connection all are provided with the air door that is used for adjusting the amount of wind, the second secondary pipe with the junction of three way connection also is provided with the air door.
The air volume is adjusted by the air door.
The first axial flow fan, the second axial flow fan, the third axial flow fan and the fourth axial flow fan are controlled by the remote intelligent ventilation system and set through a PLC display.
The end, far away from the tunnel face of the middle tunnel, of the middle guide tunnel is provided with a tunnel opening, the plurality of the transverse driving tunnels are sequentially arranged from the tunnel opening to the middle guide tunnel, and the first air pipe group, the second air pipe group, the fan group and the fan group are gradually close to each other from the tunnel opening to the middle guide tunnel.
It should be noted that, in order to ensure effective utilization of resources and reduce construction cost, the first air duct group, the second air duct group, the first fan group and the second fan group move continuously along with tunneling of the tunnel in the construction process.
The tunnel all is provided with a plurality of air quality detector at intervals in the left side tunnel, well lead the tunnel with the right side tunnel, air quality detector passes through remote intelligent ventilation system control and with two groups of fans, a set of electricity of fan is connected.
It should be noted that the quality of the controller is detected and fed back through the air quality detector, and the controller is connected with the two groups of fans and the one group of fans, so that the effective and real-time ventilation and adjustment are realized by adjusting the wind speeds of the two groups of fans and the one group of fans according to different air qualities.
Jet fans are uniformly arranged at the tops of the left tunnel, the middle guide tunnel and the right tunnel at intervals.
It should be noted that, by adding the jet fan, the discharge of the dirty air in the tunnel can be effectively accelerated.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. jet fans arranged at the tops of the two liners of the left tunnel and the right tunnel at intervals discharge dirty air on each tunnel face to the outside of the tunnel;
2. the air door capable of adjusting the air volume is arranged at the air pipe of the newly opened tunnel face, and the air volume of the newly opened tunnel face is dynamically adjusted according to the air return speed measured by the anemometer arranged on the trolley, so that the resource waste is reduced;
3. the quality of the controller is detected and fed back through the air quality detector, and the wind speeds of two groups of fans and one group of fans are adjusted according to different air qualities, so that efficient ventilation is realized;
4. with the rapid tunneling of the middle guide tunnel and the increase of the newly opened tunnel face, all fan equipment moves forward, and the middle guide tunnel is fully utilized as a compressed air tunnel.
Drawings
FIG. 1 is one of the schematic structural diagrams of the present invention;
FIG. 2 is a second schematic structural diagram of the present invention;
fig. 3 is a third schematic structural diagram of the present invention.
Illustration of the drawings: 1-left tunnel; 2-a middle guide tunnel; 3-a right tunnel; 4-jet flow fan; 5-transverse hole for vehicle running; 6-a closing door; 7-a third air duct; 8-left tunnel face; 9-right tunnel face; 10-left palm face; 11-a damper; 12-a right palm surface; 13-two right palm surfaces; 14-a three-way joint; 15-an anemometer; 16-left second palm face; 17-a tunnel face of the middle hole; 18-a third axial flow fan; 19-a fourth air duct; 20-a fourth axial flow fan; 21-a first air duct; 22-a first axial fan; 23-a second air duct; 24-a second axial fan; 25-a first secondary pipe; 26-second secondary duct.
Detailed Description
Referring to the accompanying drawing 1, this embodiment provides a tunnel type construction ventilation method for leading two main holes of a parallel pilot tunnel, which is mainly used to solve the problem of poor ventilation effect of the prior art tunnel, and is already in practical use.
The method comprises a left tunnel 1, a middle guide tunnel 2 and a right tunnel 3 which are sequentially arranged in parallel, wherein the middle guide tunnel 2 is constructed by a TBM method advanced main hole, and a driving transverse hole 5 is formed between the left tunnel 1 and the middle guide tunnel 2 and between the middle guide tunnel 2 and the right tunnel 3; a first air pipe group is arranged in the cross-car-driving hole 5 and is communicated with the left tunnel 1 and the right tunnel 3, a second air pipe group is arranged in the middle guide tunnel 2 and penetrates through the cross-car-driving hole 5 to be communicated with the left tunnel 1 and the right tunnel 3; one end of the second air pipe group in the middle guide tunnel 2 is connected with a fan group, and one end of the first air pipe group in the transverse hole 5 is connected with a fan group.
It should be noted that the middle guide tunnel 2 is constructed ahead of the left tunnel 1 and the right tunnel 3, and the main tunnel auxiliary working face is opened up at the vehicle transverse hole 5 by using the advantage of the advance of the middle guide tunnel 2, so as to realize the long tunnel short driving, that is, the flat guide pit or inclined shaft construction is used to excavate the ultra-long tunnel from a plurality of working faces, thereby greatly saving investment, shortening construction period and enabling the tunnel to be built early. Specifically, one end of the middle guide tunnel 2 is an entrance to be dug inwards, n transverse car holes 5 are planned to be arranged at two ends of the middle guide tunnel 2 respectively in the whole construction process, then the plurality of transverse car holes 5 are arranged in sequence from the entrance to the middle guide tunnel 2, the first air pipe group, the second air pipe group, the fan group and the fan group are gradually close to the middle guide tunnel 2 from the entrance, namely after the construction of the (n-1) th transverse car hole 5 is completed, the tunnel face directions of the first air pipe group, the second air pipe group, the fan group and the fan group far away from the entrance are respectively translated to the corresponding positions of the next transverse car hole 5, and meanwhile, corresponding sealing measures are taken.
The number of the transverse holes 5 is a plurality and the transverse holes are arranged in parallel; the left tunnel 1 is provided with a left tunnel face 8, the right tunnel 3 is provided with a right tunnel face 9, and the middle guide tunnel 2 is provided with a middle hole face 17; the left tunnel face 8, the right tunnel face 9 and the middle tunnel face 17 are all positioned at one end of the middle guide tunnel 2; a first left tunnel face 10 and a second left tunnel face 16 are arranged in parallel on one side of the left tunnel face 8 close to the middle tunnel face 17; a right tunnel face 12 and a right tunnel face 13 are arranged in parallel on one side of the right tunnel face 9 close to the middle tunnel face 17.
It should be noted that all the material transportation of the left tunnel face 10, the left second tunnel face 16, the right first tunnel face 12, the right second tunnel face 13 and the middle tunnel face 17 is divided to the left tunnel 1 and the right tunnel 3 through the nth transverse car-driving tunnel 5.
The fan group comprises a first axial fan 22 and a second axial fan 24, and the fan group comprises a third axial fan 18 and a fourth axial fan 20; the first air pipe group comprises a third air pipe 7 and a fourth air pipe 19, and the second air pipe group comprises a first air pipe 21 and a second air pipe 23; the first axial flow fan 22 supplies air to the tunnel face 17 of the middle tunnel through a first air pipe 21, the second axial flow fan 24 supplies air to the left tunnel face 16 through a second air pipe 23, the third axial flow fan 18 supplies air to the left tunnel face 8 through a third air pipe 7, and the fourth axial flow fan 20 supplies air to the right tunnel face 9 through a fourth air pipe 19.
It should be noted that 2 groups of high-power first axial flow fans 22 and second axial flow fans 24 are installed at the closed door close to the nth transverse traffic tunnel 5, and the constructed middle tunnel 2 is used as a tunnel to supply air to the tunnel face 17 of the middle tunnel and to press fresh air into the left tunnel face 16. And a high-power third axial flow fan 18 and a high-power fourth axial flow fan 20 are respectively arranged at the closed doors of the n-1 group of the transverse traffic hole 5 closed by the rock face closed door 6, and fresh air is pressed into the left tunnel face 8 and the right tunnel face 9 by taking the constructed middle guide tunnel 2 as a tunnel.
The high-power jet flow first axial flow fan 22 and the second axial flow fan 24 of the middle guide tunnel 2, the led first air pipe 21 and the led second air pipe 23 are respectively laid on two sides of the continuous belt conveyor at the top of the hole of the middle guide tunnel 2, the high-power axial flow third air pipe 7 and the fourth air pipe 19 are arranged at the vehicle transverse hole 5 at the communication part of the left tunnel 1 and the right tunnel 3 and the middle guide tunnel 2, and the led third air pipe 7 and the led fourth air pipe 19 are respectively laid on the arch waists of the left tunnel 1 and the right tunnel 3.
The first axial flow fan 22 is connected with the two tee joints 14 and the two first auxiliary pipes 25 through a first air pipe 21 to supply air to the right first palm surface 12 and the right second palm surface 13; the second axial fan 24 is connected with a three-way joint 14 and a second auxiliary pipe 26 through a second air pipe 23 to supply air to the left tunnel face 10.
It should be noted that the three-way joint 14 is connected to the first air duct 21 and the second air duct 23 so that the first axial fan 22 and the second axial fan 24 can press fresh air into the left palm surface 10, the left palm surface 16, the right palm surface 12, and the right palm surface 13.
A vehicle transverse hole 5 provided with a third axial flow fan 18, and a closed door 6 is arranged at the end communicated with the left tunnel 1; the vehicle transverse hole 5 provided with the fourth axial flow fan 20 is also provided with a closing door 6 at the end communicated with the right tunnel 3.
It should be noted that the drilling and blasting method obtains a left tunnel face 8 and a right tunnel face 9, two vehicle-running transverse holes 5 symmetrically arranged up and down in the middle guide tunnel 2 form a group, n groups of vehicle-running transverse holes 5 are provided, and n-1 groups of vehicle-running transverse holes 5 near the entrance to the cave are closed by using rock wool closing doors 6. And (3) sealing the middle guide tunnel 2 between the nth vehicle transverse hole 5 and the opening by adopting a rock wool sealing door 6 to form a ventilation tunnel without foul air.
The left first palm surface 10, the left second palm surface 16, the right first palm surface 12 and the right second palm surface 13 are all provided with anemometers 15; the transverse running hole 5 is provided with a jet fan 4; the air doors 11 for adjusting the air volume are arranged at the joints of the first secondary pipe 25 and the three-way joint 14, and the air doors 11 are also arranged at the joints of the second secondary pipe 26 and the three-way joint 14.
It should be noted that the air door 11 and the anemoscope 15 capable of adjusting the air volume are installed, and the air door 11 is adjusted according to the air return speed of the tunnel face to meet the air volume requirements of the left tunnel face 10, the left second tunnel face 16, the right first tunnel face 12 and the right second tunnel face 13 of the newly developed tunnel face.
All ventilation equipment in the tunnel, such as 4 groups of high-power first axial flow fans 22, second axial flow fans 24, third air pipes 7, fourth air pipes 19, jet flow fans 4, anemometers 15 and the like, continuously excavate forwards along with the left tunnel face 16, the right tunnel face 9, the left tunnel face 8, the right tunnel face 12 and the right tunnel face 13 of the tunnel face of the middle guide tunnel 2 and then move forwards, and the advantage of ventilation of the tunnel by utilizing the constructed middle guide tunnel 2 meets the air demand of a plurality of tunnel faces in the peak period.
The jet fan 4 is arranged at the position of a crossroad 5 between a left tunnel face 10, a left tunnel face 16, a right tunnel face 12, a right tunnel face 13 and the middle guide tunnel 2 of the newly opened tunnel face, dirty air of the left tunnel face 10, the left tunnel face 16, the right tunnel face 12 and the right tunnel face 13 of the newly opened tunnel face is pumped and discharged into the left tunnel 1 and the right tunnel 3 which are constructed with two linings, and the jet fan 4 arranged at a certain distance from the tops of the left tunnel 1 and the right tunnel 3 is pumped and discharged out of the tunnel.
It should be noted that, the turning of the air ducts at the locations of the cross hole 5, the tunnel face right tunnel face 9, the tunnel face left 8, the tunnel face left 10, the tunnel face left two 16, the tunnel face right 12, the tunnel face right two 13, and the tunnel face middle 17 requires smooth transition, which can reduce the wind resistance and the loss of the air volume.
The first axial flow fan 22, the second axial flow fan 24, the third axial flow fan 18 and the fourth axial flow fan 20 are controlled by the remote intelligent ventilation system and are set through a PLC display.
It should be noted that, the ventilation of all the tunnel faces of the left tunnel 1, the middle tunnel 2 and the right tunnel 3, the right tunnel face 9, the left tunnel face 8, the left tunnel face 10, the left second tunnel face 16, the right tunnel face 12, the right second tunnel face 13 and the middle tunnel face 17, is controlled by a remote intelligent ventilation system, the control of the fan speed can be set by a PLC display, the speed of the first axial fan 22, the second axial fan 24, the third axial fan 18 and the fourth axial fan 20 can be adjusted according to the required air volume, the system can be accessed from any connectable equipment equipped with ventilation management software, such as a telephone, a PC, a tablet computer and the like, and when the tunnel has a WIFI condition, a construction worker can also realize remote control.
The end of the middle guide tunnel 2 far away from the tunnel face 17 of the middle tunnel is a tunnel opening, a plurality of vehicle transverse holes 5 are sequentially arranged from the tunnel opening to the middle guide tunnel 2, and the first air pipe group, the second air pipe group, the fan group and the fan group are gradually close to the middle guide tunnel 2 from the tunnel opening.
All the intervals are provided with a plurality of air quality detectors in the tunnel 1, the well tunnel 2 and the right tunnel 3 of leading, and air quality detector passes through remote intelligent ventilation system control and with two groups of fans, a set of electricity of fan is connected.
It should be noted that the air quality in the tunnel is monitored in real time by arranging the air quality detector, the detection result is sent to the remote intelligent ventilation system for analysis, the remote intelligent ventilation system controls the steering and the steering of the axial flow fans in the two groups of fans and the one group of fans according to the analysis result, the improvement of the air quality in the tunnel is realized, and meanwhile, the air quality in the island can be ensured to be always kept in a good state by detecting and feeding back the air quality detector in real time.
Jet fans are uniformly arranged at the tops of the left tunnel 1, the middle guide tunnel 2 and the right tunnel 3 at intervals.
It should be noted that, by adding the jet fan 4, the discharge of the dirty air in the tunnel can be effectively accelerated.
The middle guide tunnel 2 is used as a tunnel, 2 groups of high-power axial flow fans are arranged to press fresh air into the face of the middle guide tunnel 2 and the newly opened face of the left tunnel 1 and the right tunnel 3 through air pipes. With the forward tunneling of the tunnel faces of the middle guide tunnel, the left tunnel and the right tunnel, 4 groups of fans and air pipes extend towards the tunneling direction, and the problems of difficult ventilation, difficult smoke discharge and the like of the tunnel faces of the three-hole tunnel with the extra long mountain are solved.
Combining a certain tunnel with three holes, the tunnel adopts a design scheme of '3-hole +4 vertical shaft', the maximum one-end ventilation distance reaches 11km, a plurality of tunnel faces are constructed simultaneously in peak period, the material transportation of the newly-opened main holes and the plurality of tunnel faces is divided into a left tunnel and a right tunnel through a middle guide pipe of 1.6km, and the material transportation is transported out of the holes together with the material transportation of 2 tunnel faces close to the direction of the hole opening. The middle guide tunnel 2 from the outside of the parallel guide tunnel 1.6km to the opening is used as a compressed air tunnel, and the technical problems of long smoke exhaust time, difficult ventilation, incomplete pollution discharge in the tunnel and the like in the tunneling of a plurality of tunnel faces in the peak period of the tunnel are successfully solved.
The roadway type construction ventilation method for the advanced double main holes of the parallel middle pilot tunnel can effectively solve the technical problem that the toxic and harmful gases such as blasting smoke dust, automobile exhaust and the like generated in the process of constructing a plurality of tunnel faces of the left tunnel 1 and the right tunnel 3 assisted by the parallel middle pilot tunnel cannot be discharged, improves the tunnel construction efficiency and is beneficial to the physical and psychological health of constructors. Along with the rapid tunneling of the middle pilot tunnel 2 and the increase of newly-opened tunnel faces, all fan equipment moves forward, the middle pilot tunnel is fully utilized as a compressed air tunnel, and dirty air of each tunnel face is discharged out of the tunnel by means of jet fans arranged at the tops of two liners of the left tunnel 1 and the right tunnel 3 at a certain distance, so that the technical problem of ventilation in the construction of the tunnel with a large mountain is solved. The air door 11 capable of adjusting the air volume is arranged at the air pipe of the newly opened tunnel face, the air volume of the newly opened tunnel face is dynamically adjusted according to the air return speed measured by the anemoscope 15 arranged on the trolley, the operation is flexible and reliable, the electric charge is saved, and the resource waste is reduced.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A roadway type construction ventilation method for advanced double main holes of a parallel middle guide tunnel is characterized by comprising a left tunnel (1), a middle guide tunnel (2) and a right tunnel (3) which are sequentially arranged in parallel, wherein the middle guide tunnel (2) is constructed by a TBM method advanced main hole, and a vehicle transverse hole (5) is formed between the left tunnel (1) and the middle guide tunnel (2) and between the middle guide tunnel (2) and the right tunnel (3);
a first air pipe group is arranged in the transverse driving hole (5), the first air pipe group is communicated with the left tunnel (1) and the right tunnel (3), a second air pipe group is arranged in the middle guide tunnel (2), and the second air pipe group penetrates through the transverse driving hole (5) and is communicated with the left tunnel (1) and the right tunnel (3);
one end of the second air pipe set, which is positioned in the middle guide tunnel (2), is connected with a fan set, and one end of the first air pipe set, which is positioned in the transverse hole (5) for driving, is connected with a fan set.
2. The roadway type construction ventilation method for the advanced double main holes of the parallel middle-guide tunnel according to claim 1, wherein the number of the transverse car holes (5) is several and arranged in parallel; the left tunnel (1) is provided with a left tunnel face (8), the right tunnel (3) is provided with a right tunnel face (9), and the middle guide tunnel (2) is provided with a middle hole face (17); the left tunnel face (8), the right tunnel face (9) and the middle tunnel face (17) are all positioned at one end of the middle guide tunnel (2);
a first left tunnel face (10) and a second left tunnel face (16) are arranged on one side, close to the middle tunnel face (17), of the left tunnel face (8) in parallel; and a right tunnel face (12) and a right tunnel face (13) are arranged on one side of the right tunnel face (9) close to the middle tunnel face (17) in parallel.
3. The roadway construction ventilation method for the advanced double main holes of the parallel middle-guide tunnel according to claim 2, wherein the fan set comprises a first axial flow fan (22) and a second axial flow fan (24), and the fan set comprises a third axial flow fan (18) and a fourth axial flow fan (20); the first air pipe group comprises a third air pipe (7) and a fourth air pipe (19), and the second air pipe group comprises a first air pipe (21) and a second air pipe (23);
first axial fan (22) pass through first tuber pipe (21) do well hole face (17) air feed, second axial fan (24) are passed through second tuber pipe (23) do left side two face (16) air feed, third axial fan (18) are passed through third tuber pipe (7) do left side tunnel face (8) air feed, fourth axial fan (20) are passed through fourth tuber pipe (19) do right side tunnel face (9) air feed.
4. The roadway construction ventilation method for the advanced double main holes of the parallel middle-guide tunnel according to claim 3, wherein the first axial fan (22) supplies air to the right tunnel face (12) and the right second tunnel face (13) by connecting two tee joints (14) and two first auxiliary pipes (25) through a first air pipe (21);
the second axial flow fan (24) is connected with a three-way joint (14) and a second auxiliary pipe (26) through a second air pipe (23) to supply air to the left tunnel face (10).
5. The roadway type construction ventilation method for the advanced double main holes of the parallel middle-guide tunnel according to claim 3, characterized in that the cross car hole (5) provided with the third axial flow fan (18) is provided with a closed door (6) at the end communicated with the left tunnel (1);
the driving transverse hole (5) provided with the fourth axial flow fan (20) is also provided with a closing door (6) at the end communicated with the right tunnel (3).
6. The roadway type construction ventilation method for the advanced double main holes of the parallel middle-guide tunnel according to claim 4, wherein wind speed meters (15) are arranged at the left tunnel face (10), the left second tunnel face (16), the right first tunnel face (12) and the right second tunnel face (13);
the first auxiliary pipe (25) and the joint of the three-way joint (14) are provided with air doors (11) used for adjusting the air volume, and the second auxiliary pipe (26) and the joint of the three-way joint (14) are also provided with the air doors (11).
7. The roadway construction ventilation method for the advanced double main holes of the parallel middle-guide tunnel according to claim 3, wherein the first axial flow fan (22), the second axial flow fan (24), the third axial flow fan (18) and the fourth axial flow fan (20) are controlled by a remote intelligent ventilation system and are set by a PLC display.
8. The roadway type construction ventilation method for the advanced double main holes of the parallel middle pilot tunnel according to any one of claims 1 to 7, characterized in that one end of the middle pilot tunnel (2) far away from the tunnel face (17) of the middle tunnel is a tunnel opening, a plurality of the transverse vehicle-driving holes (5) are sequentially arranged from the tunnel opening to the middle pilot tunnel (2), and the first air pipe group, the second air pipe group, the fan group and the fan group are gradually close to each other from the tunnel opening to the middle pilot tunnel (2).
9. The roadway type construction ventilation method for the advanced double main holes of the parallel middle guide tunnel according to claim 8, wherein a plurality of air quality detectors are arranged in the left tunnel (1), the middle guide tunnel (2) and the right tunnel (3) at intervals, and the air quality detectors are controlled by the remote intelligent ventilation system and are electrically connected with the two sets of fans and the one set of fans.
10. The roadway construction ventilation method for the advanced double main holes of the parallel middle guide tunnel according to claim 9, characterized in that jet fans (4) are uniformly arranged at the tops of the left tunnel (1), the middle guide tunnel (2) and the right tunnel (3) at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210032964.9A CN114320423B (en) | 2022-01-12 | 2022-01-12 | Tunnel type construction ventilation method for advanced double main holes of parallel middle guide tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210032964.9A CN114320423B (en) | 2022-01-12 | 2022-01-12 | Tunnel type construction ventilation method for advanced double main holes of parallel middle guide tunnel |
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| Publication Number | Publication Date |
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| CN114320423A true CN114320423A (en) | 2022-04-12 |
| CN114320423B CN114320423B (en) | 2024-08-23 |
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| CN202210032964.9A Active CN114320423B (en) | 2022-01-12 | 2022-01-12 | Tunnel type construction ventilation method for advanced double main holes of parallel middle guide tunnel |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| JP2016033325A (en) * | 2014-07-29 | 2016-03-10 | 大成建設株式会社 | Tunnel ventilation method and tunnel ventilation system |
| 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 |
| CN112780330A (en) * | 2021-02-19 | 2021-05-11 | 中交第二公路工程局有限公司 | Construction ventilation method for parallel three-hole tunnel press-in type ventilation |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2016033325A (en) * | 2014-07-29 | 2016-03-10 | 大成建設株式会社 | Tunnel ventilation method and tunnel ventilation system |
| 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 |
| CN112780330A (en) * | 2021-02-19 | 2021-05-11 | 中交第二公路工程局有限公司 | Construction ventilation method for parallel three-hole tunnel press-in type ventilation |
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