Slag blocking system used when waste slag vertical shaft is located in traffic tunnel

Abstract

The invention discloses a slag blocking system used when a waste slag vertical shaft is located in a traffic tunnel, and belongs to the technical field of traffic tunnel engineering in a hydroelectric field. A slag blocking system when a waste slag vertical shaft is located in a traffic tunnel comprises a low-elevation tunnel and the waste slag vertical shaft, the waste slag vertical shaft is communicated with the low-elevation tunnel so that slag can be conveniently discharged, a protective structure capable of being opened and closed is arranged in the tunnel, the low-elevation tunnel is separated through the protective structure, and the waste slag vertical shaft is located on one side of the protective structure. And a certain distance is formed between the protection structure and the waste slag vertical shaft and serves as a buffer area. According to the cleaning device, the protection structure is additionally arranged in the tunnel, the tunnel is divided by the protection structure, the protection structure controls rock slag splashing, the rock slag splashing is specifically limited in the buffer area between the protection structure and the lower portion of the waste slag vertical shaft, and therefore the cleaning efficiency is improved; the protection structure can be opened and closed, so that vehicles can pass through the protection structure after the protection structure is opened, and rock slag is conveyed conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of traffic tunnel engineering in a hydropower plant, and in particular to a slag blocking system when a slag vertical shaft is located in a traffic tunnel. Background Art

[0002] Most of the large hydropower stations in southwest my country are located in deep mountain valleys. Their on-site transportation mostly uses tunnels, which are mainly arranged in the mountains on both sides of the dam site. Usually, traffic tunnels are arranged at low, medium and high levels on both sides of the left and right banks. For high-elevation tunnels, since there is no road to reach the construction surface during the construction period, construction equipment is usually lifted to the work surface by cables, and personnel climb to the work surface through pedestrian walkways for construction. However, slag removal becomes a problem during tunnel construction. The commonly used method is to set up a slag removal shaft between the high-elevation tunnel and the low-elevation tunnel. The waste slag generated during the construction of the high-elevation tunnel falls into the low-elevation tunnel through the shaft, and then is transported to the waste dump by slag trucks. The main problem with the implementation of this solution is that the shaft height exceeds 100 meters, and the vertical drop distance of the rock slag exceeds 100 meters. When the rock slag reaches a low altitude, the slag blocks have great kinetic energy and fast speed, and the maximum splashing distance in the tunnel exceeds 50 meters. At the same time, the slag blocks usually explode into multiple small pieces when they hit the ground, resulting in a large amount of gravel scattered on the ground in the lower traffic tunnel, and most of them are angular, which can easily cause tire blowouts for vehicles passing through the tunnel, greatly affecting vehicle driving safety. The current solution is mainly to manually clean the gravel on the ground, but it requires a lot of manpower, high cost, low efficiency, and untimely cleaning. In addition, due to the poor light in the tunnel, it is difficult to clean it up manually, and traffic cannot be blocked when workers are cleaning, and the safety of cleaning workers is difficult to guarantee. Summary of the invention

[0003] In order to overcome the technical problem of hidden dangers to driving safety and worker operation safety in tunnels when using the existing slag shaft, the present invention provides a slag blocking system when the slag shaft is located in a traffic tunnel.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] The slag control system when the slag shaft is located in the traffic tunnel includes a low-elevation tunnel and a slag shaft. The slag shaft is connected to the low-elevation tunnel to facilitate slag discharge. An openable and closable protective structure is provided in the tunnel. The protective structure separates the low-elevation tunnel. The slag shaft is located on one side of the protective structure, and there is a distance between the protective structure and the slag shaft as a buffer zone.

[0006] In the present application, a protective structure is added in the tunnel, which divides the tunnel. The protective structure controls the splash of rock slag, specifically limiting it to the buffer zone between the protective structure and the bottom of the slag shaft, thereby improving the cleaning efficiency; and the protective structure can be opened and closed to facilitate the passage of vehicles after opening, thereby facilitating the transportation of rock slag.

[0007] Furthermore, the protective structure includes a fixed protective structure and a movable protective structure. The fixed protective structure is arranged above the movable protective structure and is adapted to the upper arch area of ​​the low-elevation tunnel. The fixed protective structure is fixedly connected in the low-elevation tunnel and is adapted to the upper arch area of ​​the low-elevation tunnel. The movable protective structure can be opened and closed. When the movable protective structure is opened, vehicles can pass under the fixed protective structure.

[0008] In this embodiment, the protective structure includes an upper fixed protective structure and a lower movable protective structure, and the vehicle passes through by opening and closing the lower movable protective structure.

[0009] Furthermore, an electric slide rail is arranged below the fixed protective structure, and the electric slide rail is arranged horizontally, so that the movable protective structure can be arranged in the tunnel to be opened and closed horizontally.

[0010] In this embodiment, the movable protective structure is preferably opened and closed horizontally to avoid the influence on the vertical height when closed; the movable protective structure is opened and closed horizontally by an electric slide rail, which is easy to implement.

[0011] Furthermore, the bottom of the electric slide rail is 10cm-25cm higher than the tunnel construction limit.

[0012] In this embodiment, for the safety of vehicles passing through, the bottom of the electric slide rail should be 10 cm higher than the tunnel construction limit; considering that the tunnel is an arched structure, if the electric slide rail is set too high, the area of ​​the upper fixed protective structure will become smaller, the lower movable protective structure will be too large, and the upper and lower parts will be uncoordinated, which will reduce the adjustment area of ​​the movable protective structure by the electric slide rail and damage the protective structure. Therefore, it is preferred that the bottom of the electric slide rail is 10 cm-25 cm higher than the tunnel construction limit.

[0013] Furthermore, the movable protective structure includes two symmetrically arranged sections, and the sum of the widths of the left and right sections is 10cm-15cm larger than the net width of the tunnel.

[0014] In this embodiment, the movable protective structure includes two symmetrically arranged ones, so that the electric slide rail can control its movement. The sum of the widths of the two movable protective structures is limited to ensure that there is no gap between the two movable protective structures when they are closed.

[0015] Furthermore, a mounting groove is provided on the side wall of the low-elevation tunnel, and a motor for driving the electric slide rail is arranged in the mounting groove.

[0016] In this embodiment, the motor is installed by providing a mounting groove, thereby preventing the motor from being splashed by rock debris and affecting the safety of use.

[0017] Furthermore, the switch of the electric slide rail is on the side wall of the low-elevation tunnel, and the switch is located on the side of the protective structure away from the slag shaft.

[0018] In this embodiment, the electric slide rail switch is arranged on the side wall of the low-elevation tunnel for easy implementation; specifically, it is located on the side wall of the protective structure away from the slag shaft to avoid being splashed by slag and is easy to use.

[0019] Furthermore, it comprises a steel column adapted to the inner contour of the low-elevation tunnel, and the protective structure is connected to the steel column.

[0020] In this embodiment, a steel column is provided to facilitate the connection and installation of the protective structure. In practice, the steel column can be pre-buried in the secondary lining of the tunnel.

[0021] Furthermore, the protective structure is a double-layer structure, a layer of the protective structure close to the slag shaft is a passive protective net, and a layer of the protective structure away from the slag shaft is a non-woven fabric.

[0022] In this embodiment, the protective structure is composed of non-woven fabric and passive protective net. The working principle of the passive protective net is the same as that of the passive protective net of the highway slope, and it is mainly composed of a wire rope net. The wire rope net is a high-strength flexible structure that can well absorb the kinetic energy of the ejected rock mass and play a major interception role; the non-woven fabric mainly plays a secondary interception role, mainly used to intercept small-diameter blocks.

[0023] Furthermore, the distance between the protective structure and the spoil shaft is 20m-40m.

[0024] In this embodiment, when the distance between the protective structure and the waste shaft is short, more rock debris needs to be intercepted, the kinetic energy is large, the protective structure is easily damaged, and the service life is short; when the distance between the protective structure and the waste shaft is long, the interception effect cannot be better, and the cleaning is still inconvenient. It is preferably implemented as above.

[0025] The beneficial effects of the present invention are:

[0026] 1. By adding a protective structure in the tunnel, the protective structure divides the tunnel and controls the splash of rock debris, specifically limiting it to the buffer zone between the protective structure and the bottom of the waste shaft, thereby improving the cleaning efficiency; and the protective structure can be opened and closed so that vehicles can pass through after opening, which is convenient for cleaning rock debris.

[0027] 2. The protective structure includes an upper fixed structure and a lower movable structure, and the lower movable structure is opened and closed by an electric slide rail. The main structure is simple, the structure is easy to operate, and the cost is low.

[0028] 3. Double-layer interception of non-woven fabric and passive protection net, with good interception effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the overall structure of the slag interception system provided by the present invention when the slag shaft is located in a traffic tunnel;

[0030] Figure 2 for Figure 1 Schematic diagram of the implementation status of the medium protection structure;

[0031] Figure 3 for Figure 1 Schematic diagram of the double-layer structure of the middle protection structure;

[0032] Figure 4 for Figure 1 Schematic diagram of the structure of the electric slide.

[0033] Marked in the figure are, 1-waste area, 2-buffer zone, 3-steel column, 4-protection structure, 41-fixed protection structure, 42-movable protection structure, 5-installation groove, 6-motor, 7-protection area, 8-electric slide rail, 81-driving wheel, 82-passive wheel, 83-pull rope, 84-fixed block, 85-groove, 86-roller, 9-steel plate, 10-fixed hook, 11-sliding hook, 12-lower fixed double rope, 13-switch, 14 tunnel secondary lining, 15-tunnel construction limit, 16-drainage ditch, 17-non-woven fabric, 18-passive protection net. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings.

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Combination Figure 1-Figure 4 As shown, the present invention provides a slag blocking system when the slag shaft is located in a traffic tunnel.

[0037] The slag shaft is located in the traffic tunnel, making the slag blocking system include a low-elevation tunnel and a slag shaft. The slag shaft is connected to the low-elevation tunnel to facilitate slag discharge. An openable and closable protective structure 4 is provided in the tunnel. The protective structure 4 separates the low-elevation tunnel. The slag shaft is located on one side of the protective structure 4, and there is a distance between the protective structure 4 and the slag shaft, which serves as a buffer zone 2.

[0038] In the present application, a protective structure 4 is added in the tunnel, which divides the tunnel. The protective structure 4 controls the splash of rock debris, specifically limiting it to the buffer zone 2 between the protective structure 4 and the bottom of the slag shaft, thereby improving the cleaning efficiency; and the protective structure 4 can be opened and closed so that vehicles can pass through after opening, which facilitates the cleaning of rock debris.

[0039] Reference Figure 1 The slag area 1 is the area corresponding to the bottom of the slag shaft. The protective structure 4 divides the low-elevation tunnel into a protective area 7 and a buffer zone 2. When the protective structure 4 is closed, it plays a physical isolation role to prevent rock slag from entering the protective area 7; when the protective structure 4 is opened, vehicles can pass.

[0040] Furthermore, the distance between the protective structure 4 and the spoil shaft is 20m-40m.

[0041] In this embodiment, considering that when the distance between the protective structure 4 and the waste shaft is short, the rock debris to be intercepted is large, the kinetic energy is large, the protective structure 4 is easily damaged, and the service life is short; when the distance between the protective structure 4 and the waste shaft is far, the interception effect cannot be better, and there will still be the problem of inconvenience in cleaning. It is preferably implemented as above.

[0042] Furthermore, it comprises a steel column 3 adapted to the inner contour of the low-elevation tunnel, and a protective structure 4 is connected to the steel column 3 .

[0043] In this embodiment, the steel column 3 is provided to facilitate the connection and installation of the protective structure 4. In practice, the steel column 3 can be pre-buried in the secondary lining 14 of the tunnel.

[0044] In this embodiment, the steel column 3 is an I14 steel column, the center of the I14 steel column extends 7 cm outside the tunnel contour, and a fixing hook 10 is set on the I14 steel frame. The fixing hook 10 is connected to the steel by bolts with a spacing of 60 cm.

[0045] Furthermore, the protective structure 4 is a double-layer structure, a layer of the protective structure 4 close to the waste slag shaft is a passive protective net 18 , and a layer of the protective structure 4 far from the waste slag shaft is a non-woven fabric 17 .

[0046] In this embodiment, the protective structure 4 is composed of a non-woven fabric 17 and a passive protective net 18. The working principle of the passive protective net 18 is the same as that of the highway slope passive protective net 18, and it is mainly composed of a wire rope net. The wire rope net is a high-strength flexible structure that can well absorb the kinetic energy of the ejected rock mass and play a major interception role; the non-woven fabric 17 mainly plays a secondary interception role, mainly used to intercept small-diameter blocks and dust.

[0047] In this embodiment, the passive protection net 18 is a steel wire rope net with a nominal diameter of 8.0 mm, a nominal mesh size of 100 mm*100 mm, and a nominal protection energy level of not less than 1000 kj.

[0048] Furthermore, the protective structure 4 includes a fixed protective structure 41 and a movable protective structure 42. The fixed protective structure 41 is arranged above the movable protective structure 42 and is adapted to the upper arch area of ​​the low-elevation tunnel. The fixed protective structure 41 is fixedly connected in the low-elevation tunnel and is adapted to the upper arch area of ​​the low-elevation tunnel. The movable protective structure 42 can be opened and closed. When the movable protective structure 42 is opened, vehicles can pass under the fixed protective structure 41.

[0049] In this embodiment, the protective structure 4 includes an upper fixed protective structure 41 and a lower movable protective structure 42 , and the passage of vehicles is achieved by opening and closing the lower movable protective structure 42 .

[0050] Furthermore, an electric slide rail 8 is disposed below the fixed protective structure 41 , and the electric slide rail 8 is disposed horizontally, so that the movable protective structure 42 can be disposed in the tunnel to be opened and closed horizontally.

[0051] In this embodiment, the movable protective structure 42 is preferably opened and closed horizontally to avoid the influence on the vertical height when closed; the movable protective structure 42 is opened and closed horizontally by the electric slide rail 8, which is easy to implement.

[0052] Further, the bottom of the electric slide rail 8 is 10cm-25cm higher than the tunnel construction limit 15.

[0053] In this embodiment, for the safety of vehicles passing through, the bottom of the electric slide rail 8 should be 10 cm higher than the tunnel construction limit 15; considering that the tunnel is an arched structure, if the electric slide rail 8 is set too high, the area of ​​the upper fixed protective structure 41 will become smaller, the lower movable protective structure 42 will be too large, and the upper and lower parts will be inconsistent, which will reduce the adjustment area of ​​the electric slide rail 8 for the movable protective structure 42, and the protective structure 4 will be easily damaged. Therefore, it is preferred that the bottom of the electric slide rail 8 is 10 cm-25 cm higher than the tunnel construction limit 15.

[0054] In this embodiment, taking into account the use of sliding hooks 11 to fix the movable protective structure 42, when considering the size of the sliding hooks 11, taking the height of the sliding hooks 11 as an example of 5 cm, when considering the safety reserve of 10 cm, the bottom of the electric slide rail 8 should be 15 cm-25 cm higher than the tunnel construction limit 15.

[0055] In this embodiment, the fixed protection structure 41 is installed and connected through the steel column 3 and the fixed hook 10 provided on the upper part of the electric slide rail 8.

[0056] Furthermore, the movable protective structure 42 includes two symmetrically arranged sections, and the sum of the widths of the left and right sections is 10 cm-15 cm larger than the net width of the tunnel.

[0057] In this embodiment, the movable protective structure 42 includes two symmetrically arranged ones, so that the electric slide rail 8 can control its movement. The sum of the widths of the two movable protective structures 42 is limited to ensure that there is no gap between the two movable protective structures 42 when they are closed.

[0058] In this embodiment, the two movable protective structures 42 are installed and connected to the connecting surface of the low-elevation tunnel side wall through fixed hooks 10, specifically installed and connected to the steel column 3, and the upper ends of the two movable protective structures 42 are installed and connected by sliding hooks 11.

[0059] Specifically, Figure 4 As shown, the electric slide rail 8 is driven by the motor 6, and a pull rope 83 is arranged around the outer circumference of the driving wheel 81 and the driven wheel 82, and a fixing block 84 is arranged on the pull rope 83 on both sides, and the sliding hook 11 is connected to the fixing block 84. When the driving wheel 81 rotates, the pull rope 83 is driven to move, and the pulling rope 83 drives the fixing blocks 84 on both sides to move in opposite directions, thereby realizing the opening and closing of the movable protective structure 42. A groove 85 is also provided, and the fixing block 84 is connected in the groove 85 through a roller 86 to accurately control the movement trajectory.

[0060] On the side of the electric slide rail 8 away from the motor 6, the electric slide rail 8 is connected to the tunnel side wall through a steel plate 9. The steel plate 9 is pre-buried in the secondary lining 14 of the tunnel.

[0061] In this embodiment, the height of the movable protective structure 42 is adapted to the height between the tunnel bottom and the electric slide rail 8, and a lower fixed double rope 12 is arranged below the movable protective structure 42. The lower fixed double rope 12 is two steel wire ropes, each of which is supported in a twisted shape and runs through the lower part of the movable protective structure 42. It is used to increase the integrity of the protective structure 4 and improve the slag blocking effect; and the dead weight is conducive to playing a fixing role, avoiding the protective structure 4 from swinging greatly due to the impact of ejected rock slag and the bottom lifting during the slag blocking process.

[0062] Furthermore, a mounting groove 5 is provided on the side wall of the low-elevation tunnel, and a motor 6 for driving the electric slide rail 8 is arranged in the mounting groove 5 .

[0063] In this embodiment, the motor 6 is installed by providing the installation groove 5, thereby preventing the motor 6 from being splashed by rock debris and affecting the safety of use.

[0064] Furthermore, the switch 13 of the electric slide rail 8 is on the side wall of the low-elevation tunnel, and the switch 13 is located on the side of the protective structure 4 away from the slag shaft.

[0065] In this embodiment, the switch 13 of the electric slide rail 8 is arranged on the side wall of the low-elevation tunnel for easy implementation; specifically, it is located on the side wall of the protective structure 4 away from the slag shaft to avoid being splashed by slag and is easy to use.

[0066] In this embodiment, a drainage ditch 16 is provided at the bottom of the bottom elevation tunnel.

[0067] Working process: When the slag needs to be discarded from above, the switch 13 is used to control the electric slide rail 8 to close the movable protective structure 42 below, and the non-woven fabric 17 and the passive protective net 18 cover the entire tunnel section to intercept the ejected rock slag. After the slag is discarded, the switch 13 is controlled to open the movable protective structure 42 below to allow slag transport vehicles and related machinery to enter and exit. After opening, manual cleaning can be performed first to avoid damage to vehicle tires. Due to the existence of the protective structure 4, the cleaning range is reduced.

[0068] This embodiment has at least the following advantages: 1. The structure is simple and easy, and the cost is low. The main components such as the passive protection net 18, non-woven fabric 17, motor 6, and electric slide rail 8 do not need to be manufactured separately and can be purchased, and the installation is simple; 2. The interception effect is good and can effectively intercept ejected rock debris; 3. The protection structure 4 is fixed by the fixed hook 10 and the movable hook 11. When the passive protection net 18 and the non-woven fabric 17 are damaged, they can be replaced at any time.

[0069] The implementation method of this embodiment is as follows: 1. According to the cross-sectional dimensions of the tunnel, the steel column 3 is embedded, the steel plate 9 is connected, and the installation slot 5 for the motor 6 is reserved; 2. The fixed hook 10 is installed on the embedded steel column 3; 3. The electric slide rail 8, the motor 6 and the switch 13 of the electric slide rail 8 are installed by connecting the steel plate 9 and the reserved installation slot 5; 4. The upper fixed protective structure 41 and the lower movable protective structure 42 are installed by means of hooks; 5. When the shaft needs to discard slag, the lower movable protective structure 42 is closed by the electric slide rail 8 to block the slag; 6. When the slag discarding is completed, the lower movable protective structure 42 is opened to allow vehicles to enter and exit to transport the slag.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. When the slag shaft is located in a traffic tunnel, the slag blocking system includes a low-elevation tunnel and a slag shaft. The slag shaft is connected to the low-elevation tunnel to facilitate slag discharge. The characteristics are: An openable and closable protective structure (4) is provided in the tunnel, the protective structure (4) separates the low-elevation tunnel, the slag shaft is located on one side of the protective structure (4), and there is a distance between the protective structure (4) and the slag shaft, which serves as a buffer zone (2).

2. The slag interception system when the waste shaft is located in a traffic tunnel as claimed in claim 1, characterized in that: The protective structure (4) comprises two parts, namely a fixed protective structure (41) and a movable protective structure (42). The fixed protective structure (41) is arranged above the movable protective structure (42). The fixed protective structure (41) is fixedly connected in the low-elevation tunnel and is adapted to the upper arched area of ​​the low-elevation tunnel. The movable protective structure can be opened and closed. When the movable protective structure is opened, a vehicle can pass under the fixed protective structure (41).

3. The slag interception system when the waste shaft is located in a traffic tunnel as claimed in claim 2, characterized in that: An electric slide rail (8) is arranged below the fixed protection structure (41), and the electric slide rail (8) is arranged horizontally, so that the movable protection structure (42) can be arranged in the tunnel in a horizontally opened and closed manner.

4. The slag interception system when the waste shaft is located in a traffic tunnel as claimed in claim 3, characterized in that: The bottom of the electric slide rail (8) is 10cm-25cm higher than the tunnel construction limit (15).

5. The slag interception system when the waste slag shaft is located in a traffic tunnel as claimed in claim 3, characterized in that: The movable protective structure (42) comprises two symmetrically arranged sections, and the sum of the widths of the left and right sections is 10 cm to 15 cm greater than the net width of the tunnel.

6. The slag interception system when the waste shaft is located in a traffic tunnel as claimed in claim 3, characterized in that: An installation groove (5) is provided on the side wall of the low-elevation tunnel, and a motor (6) for driving the electric slide rail (8) is arranged in the installation groove (5).

7. The slag interception system when the waste shaft is located in a traffic tunnel as claimed in claim 3, characterized in that: The switch (13) of the electric slide rail (8) is arranged on the side wall of the low-elevation tunnel, and the switch (13) is located on the side of the protective structure (4) far away from the slag shaft.

8. The slag interception system when the slag shaft is located in a traffic tunnel as claimed in claim 1, characterized in that: It comprises a steel column (3) adapted to the inner contour of a low-elevation tunnel, and a protective structure (4) connected to the steel column (3).

9. The slag interception system when the waste shaft is located in a traffic tunnel as claimed in claim 1, characterized in that: The protective structure (4) is a double-layer structure, wherein a layer of the protective structure (4) close to the waste slag shaft is a passive protective net (18), and a layer of the protective structure (4) away from the waste slag shaft is a non-woven fabric (17).

10. The slag blocking system according to any one of claims 1 to 9 when the waste shaft is located in a traffic tunnel, characterized in that: The distance between the protective structure (4) and the spoil shaft is 20m-40m.

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