CN215444116U - Ventilation system in hole suitable for tunnel is grown up to mine method - Google Patents
Ventilation system in hole suitable for tunnel is grown up to mine method Download PDFInfo
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- CN215444116U CN215444116U CN202121633211.0U CN202121633211U CN215444116U CN 215444116 U CN215444116 U CN 215444116U CN 202121633211 U CN202121633211 U CN 202121633211U CN 215444116 U CN215444116 U CN 215444116U
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Abstract
The utility model provides an in-tunnel ventilation system suitable for a long and large tunnel by a mining method. The device is arranged in the tunnel and on the second-lining trolley and comprises a wind bag, a wind bag box, a winch and a steel cable; the top of the two-lining trolley is fixedly provided with the air bag box, the top of the air bag box is fixedly provided with the winch, one end of the steel cable is accommodated in the winch, and the other end of the steel cable extends out of the tunnel; the air bag box comprises an outer cylinder, an inner cylinder and an interlayer between the outer cylinder and the inner cylinder, wherein one end of the interlayer close to the tunnel entrance is open, and one end of the inner cylinder close to the tunnel entrance is provided with a first joint; one end of the wind bag is sleeved outside the inner cylinder and is folded and contained in the interlayer, and the other end of the wind bag extends out of the interlayer, is connected with the first joint and extends out of the tunnel along the steel cable. The in-tunnel ventilation system suitable for the long and large tunnel by the mining method solves the technical problem that the ventilation system needs to be closed frequently in the construction process of the tunnel by the mining method in the prior art and has potential safety hazards.
Description
Technical Field
The utility model relates to the field of tunnel engineering, in particular to an in-tunnel ventilation system suitable for a long and large tunnel by a mining method.
Background
In the tunnel constructed by the mining method, oxygen in the tunnel is greatly reduced due to factors such as drilling, explosive blasting, mucking, concrete spraying, exhaust of internal combustion machinery and transport vehicles, harmful gas released from the stratum by excavation and the like, and the air in the tunnel is polluted due to the mixed release of the harmful gas and rock dust. Along with the tunnel constantly excavates, constantly extends to the massif depths, and temperature and humidity in the hole correspondingly improve, produce more serious influence to the health of borehole operation personnel. Therefore, a reasonable and feasible ventilation scheme must be established according to local conditions to ensure that enough fresh air is supplied in the holes, reduce the concentration of harmful gas and dust, improve the labor conditions and ensure the physical health of operators. However, ventilation pipelines in tunnels constructed by the mining method at the present stage are limited by construction environments and are inconvenient to erect, and along with the deepening of tunnel excavation and the forward movement of a secondary lining trolley, a tunnel ventilation system needs to be closed when the ventilation pipelines are extended every time, the required time is long, and potential safety hazards are brought to tunnel ventilation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems that a ventilation system is required to be closed frequently in the process of mine-method tunnel construction in the prior art and potential safety hazards exist, the utility model provides an in-tunnel ventilation system which is suitable for a long and large tunnel in a mine method and solves the problems.
An in-tunnel ventilation system suitable for a long and large tunnel by a mining method is arranged in the tunnel and on a two-lining trolley and comprises a wind bag, a wind bag box, a winch and a steel cable; the top of the two-lining trolley is fixedly provided with the air bag box, the top of the air bag box is fixedly provided with the winch, one end of the steel cable is accommodated in the winch, and the other end of the steel cable extends out of the tunnel; the air bag box is a double-layer cylinder and comprises an outer cylinder, an inner cylinder and an interlayer between the outer cylinder and the inner cylinder, wherein one end of the interlayer close to the tunnel entrance is open, and one end of the inner cylinder close to the tunnel entrance is provided with a first joint; one end of the wind bag is sleeved outside the inner cylinder and is folded and contained in the interlayer, and the other end of the wind bag extends out of the interlayer, is connected with the first joint and extends out of the tunnel along the steel cable.
In a preferred embodiment of the ventilation system in the tunnel suitable for the long and large tunnel by the mining method, the ventilation system further comprises a telescopic air pipe; and a second joint is arranged at one end of the air bag box, which is far away from the tunnel entrance, and one end of the telescopic air pipe is connected with the second joint.
The lifting hook also comprises a plurality of lifting hooks; the lifting hook is arranged at the top in the tunnel, and the steel cable is hung on the lifting hook and extends out of the tunnel along the lifting hook.
The device also comprises a guider; the guider is arranged on the air bag box, and the steel cable passes through the guider and then extends out of the tunnel.
In a preferred embodiment of the ventilation system in the tunnel suitable for the longtunnel by the mining method, the inner cylinder is flared at one end close to the tunnel opening to form the first flared joint, and the maximum diameter of the first flared joint is smaller than or equal to the inner diameter of the air bag.
Also comprises a steel belt; the steel belt is arranged outside the air bag in a surrounding mode and locked at the position of the first joint, and the air bag is fixed to the first joint.
Compared with the prior art, the ventilation system in the tunnel suitable for the long and large tunnel by the mining method solves the problems that the air bag is inconvenient to install and detach, has more requirements on the operation space and brings inconvenience to the construction operation at the present stage. The adaptability of the ventilating duct to the working environment is enhanced, and the ventilating duct can freely stretch and retract along with the movement of the two-lining trolley. And the ventilation system does not need to be closed in the telescopic process, so that continuous ventilation is realized, the problem that the air quality in the hole cannot be guaranteed because the ventilation system needs to be closed when the air bag is disassembled and reinstalled at the current stage is solved, and the potential safety hazard caused by the increase of harmful gas in the process of disassembling the air bag is eliminated.
The in-tunnel ventilation system suitable for the long and large tunnel by the mining method solves the problems that a large amount of time is spent on disassembling and re-assembling the front and rear air bags when the two-lining trolley moves at the present stage, and the efficiency is low. The extension of the wind bag can be completed only by simply operating the winch and the joint, and the overall construction efficiency is greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of an in-tunnel ventilation system suitable for a long and large tunnel by a mining method, provided by the utility model, in a lateral view;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural diagram of an in-tunnel ventilation system suitable for a long and large tunnel by a mining method, provided by the utility model, at a forward view angle;
fig. 4 is a partially enlarged view of fig. 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Fig. 1 to 4 are schematic structural diagrams of the ventilation system 1 in a tunnel suitable for a long and large tunnel by a mining method according to the present invention at a lateral view angle and a forward view angle, and partially enlarged views of the ventilation system and the ventilation system at positions of the wind pocket boxes 13.
The in-hole ventilation system 1 suitable for the long and large tunnel by the mining method is arranged in the tunnel 2 and on the two-lining trolley 3 and comprises a telescopic air pipe 11, an air bag 12, an air bag box 13, a winch 14, a steel cable 15, a lifting hook 16, a guider 17 and a steel belt (not shown in the attached drawing).
The two-lining trolley 3 is arranged on a track laid on the ground in the tunnel 2 and continuously moves forward along the track (moves to the left side under the angle shown in fig. 1 and fig. 2), and the air bag box 13 is arranged in the center of the top of the two-lining trolley 3. The air bag box 13 is a double-layer cylinder and comprises an outer cylinder 31, an inner cylinder 32 and an interlayer 33 between the outer cylinder and the inner cylinder.
Both ends of the inner cylinder 32 are penetrated, and one end (i.e., the right end at the angle shown in fig. 1 and 2) of the interlayer 33 near the tunnel entrance of the tunnel 2 is penetrated, and the other end is closed. The axis of the air bag box 13 is parallel to the moving direction of the two-lining trolley 3.
The top of the outer cylinder 31 is provided with two winches 14 through a bracket, and the axes of the two winches are positioned on the same straight line and are vertical to the moving direction of the two lining trolleys 3. The winch 14 should be a product with locking and clutching functions.
Two of the guides 17 are provided at the top of the bellows 13, between the two winches 14, near the tunnel entrance of the tunnel 2. The top of the tunnel 2 is provided with a plurality of hooks 16 along the moving direction of the two-lining trolley 3. The wire rope 15 is received in the winch 14, and the end of the wire rope extends out of the winch 14, passes through the guide 17, and then sequentially passes through each of the hooks 16 to the outside of the tunnel 2.
The inner cylinder 32 is provided with a first joint 34 at one end near the tunnel entrance of the tunnel 2 and a second joint 35 at the other end. The first joint 34 and the second joint 35 have the same structure, and both the inner cylinder 32 gradually expands outwards to form a flared joint. The maximum diameter of the first joint 34 is smaller than the inner diameter of the wind bag 12, and the maximum diameter of the second joint 35 is smaller than the inner diameter of the telescopic wind pipe 11.
The wind bag 12 can be any product suitable for ventilation of a mine tunnel, and one end of the wind bag is sleeved outside the inner cylinder 32 and fixedly connected with any position in the interlayer 33. Since the wind pocket 12 is made of flexible cloth, the wind pocket 12 having a sufficient length can be folded and stored in the interlayer 33. The other end of the wind bag 12 extends out of the interlayer 33, is suspended on the steel cable 15 and extends out of the tunnel 2.
The air bag 12 wraps the first joint 34 in the process of extending to the tunnel entrance, and the right end of the telescopic air pipe 11 wraps the second joint 35. A strip of said steel strap is tied to the outside of said wind-bag 12 at the location of said first connector 34, securing said wind-bag 12 to said first connector 34; the other steel strip is bound to the outside of the telescopic duct 11, and the telescopic duct 11 is fixed to the second joint 35.
In specific implementation, a blower or other ventilation equipment is arranged outside the tunnel 2, external fresh air is introduced into the air bag 12, and the fresh air sequentially passes through the air bag 12, the inner cylinder 32 and the telescopic air pipe 11 to an area needing ventilation.
Before the second liner carriage 3 is ready to advance, the winch 14 is unlocked and the steel band tied to the first joint 34 is released.
As the two-liner carriage 3 moves forward, the wire rope 15 housed in the winch 14 and the wind pocket 12 housed in the interlayer 33 are drawn out.
After the second liner carriage 3 stops, the winch 14 is locked, and the wind pocket 12 is fixed to the first joint 34 again using the steel belt. Finally, the newly extracted part of the wind pocket 12 is hung on the newly extracted part of the steel cable 15.
The length and the direction of the telescopic air pipe 11 can be adjusted at any time according to actual conditions, and fresh air is conveyed to an area needing ventilation.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The utility model provides a ventilation system in hole suitable for tunnel is grown up to mine method, locates in the tunnel and on two lining platform trucks, its characterized in that: comprises a wind bag, a wind bag box, a winch and a steel cable; the top of the two-lining trolley is fixedly provided with the air bag box, the top of the air bag box is fixedly provided with the winch, one end of the steel cable is accommodated in the winch, and the other end of the steel cable extends out of the tunnel; the air bag box is a double-layer cylinder and comprises an outer cylinder, an inner cylinder and an interlayer between the outer cylinder and the inner cylinder, wherein one end of the interlayer close to the tunnel entrance is open, and one end of the inner cylinder close to the tunnel entrance is provided with a first joint; one end of the wind bag is sleeved outside the inner cylinder and is folded and contained in the interlayer, and the other end of the wind bag extends out of the interlayer, is connected with the first joint and extends out of the tunnel along the steel cable.
2. The ventilation system in hole suitable for the long and large tunnel by the mining method as claimed in claim 1, is characterized in that: the device also comprises a telescopic air pipe; and a second joint is arranged at one end of the air bag box, which is far away from the tunnel entrance, and one end of the telescopic air pipe is connected with the second joint.
3. The ventilation system in hole suitable for the long and large tunnel by the mining method as claimed in claim 1, is characterized in that: the lifting hook also comprises a plurality of lifting hooks; the lifting hook is arranged at the top in the tunnel, and the steel cable is hung on the lifting hook and extends out of the tunnel along the lifting hook.
4. The ventilation system in hole suitable for the long and large tunnel by the mining method as claimed in claim 1, is characterized in that: the device also comprises a guider; the guider is arranged on the air bag box, and the steel cable passes through the guider and then extends out of the tunnel.
5. The ventilation system in a hole suitable for the long and large tunnel by the mining method according to any one of claims 1 to 4, characterized in that: one end of the inner cylinder close to the tunnel entrance is externally expanded to form a horn-shaped first joint, and the maximum diameter of the first joint is smaller than or equal to the inner diameter of the air bag.
6. The ventilation system in hole suitable for long and large tunnel by mining method of claim 5, characterized in that: also comprises a steel belt; the steel belt is arranged outside the air bag in a surrounding mode and locked at the position of the first joint, and the air bag is fixed to the first joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121633211.0U CN215444116U (en) | 2021-07-19 | 2021-07-19 | Ventilation system in hole suitable for tunnel is grown up to mine method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121633211.0U CN215444116U (en) | 2021-07-19 | 2021-07-19 | Ventilation system in hole suitable for tunnel is grown up to mine method |
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| CN215444116U true CN215444116U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121633211.0U Active CN215444116U (en) | 2021-07-19 | 2021-07-19 | Ventilation system in hole suitable for tunnel is grown up to mine method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482689A (en) * | 2021-07-19 | 2021-10-08 | 湖南中天凿岩科技有限公司 | Ventilation system in hole suitable for tunnel is grown up to mine method |
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2021
- 2021-07-19 CN CN202121633211.0U patent/CN215444116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482689A (en) * | 2021-07-19 | 2021-10-08 | 湖南中天凿岩科技有限公司 | Ventilation system in hole suitable for tunnel is grown up to mine method |
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