Supporting device and supporting method matched with narrow roadway

Abstract

The invention provides a supporting device and method matched with a narrow roadway. The supporting device comprises a machine roadway supporting assembly and an air roadway supporting assembly. The machine roadway supporting assembly comprises a single-row machine roadway end support set and a machine roadway forepoling support set which are arranged in a machine roadway, and the single-row machine roadway end support set and the machine roadway forepoling support set are arranged to be attached to the same side of the reversed loader. The air way supporting assembly comprises a single-row type air way end tail support set and an air way forepoling support set which are arranged in an air way, the air way forepoling support set is arranged along the center line of the air way, and the single-row type air way end tail support set comprises a pair of air way end tail supports connected through an air way pushing jack. A drawer type middle beam and a telescopic jack are connected between the top beams of the pair of air way end tail supports. According to the device, the supporting strength of the narrow roadway is improved, the labor intensity is reduced, the operation safety is improved, and the space for people to pass through is fully reserved.

Description

Technical Field

[0001] The invention relates to the field of coal mine tunnel support equipment, and in particular to a narrow tunnel supporting device and a supporting method. Background Art

[0002] At present, in order to ensure the safety of coal mining in the tunnel and to ensure the strength of the end and advance support of the working face, end supports are required for end support in solid coal tunnels with an undulating slope of less than 15 degrees in the coal mining working face tunnel and dynamic pressure tunnels on the goaf side, and advance supports are preferred for advance support. However, when the underground tunnel of a coal mine is a trapezoidal cross-section or a narrow rectangular tunnel, since the width of the tunnel roof and floor is less than four meters, in addition to the transportation and pedestrian passage requirements, the space left for placing support equipment is very limited, and the existing two-frame group or integral end advance cannot be used in trapezoidal cross-sections or narrow rectangular tunnels because there is no large installation space. For the safety of coal mines, single or one-beam three-column support has to be adopted. This type of support equipment will cause problems such as a large number of people occupying the underground, high operating risks, and high labor intensity of personnel.

[0003] The patent with the authorization announcement number CN221462346U discloses a temporary support device for coal mine excavation, including a base, a protective plate connected to the top of the base through a support assembly, side guard plates connected to the two sides of the base through a telescopic assembly, and two fixed pipes fixedly connected to the two sides of the top of the base. Through the telescopic assembly and the side guard plates, the temporary support device can achieve an adjustable support effect when dealing with tunnels in different environments by turning on the stepper motor to drive the bidirectional threaded rod, and the side guard plates on both sides of the temporary support device can be disassembled or tightly fitted to the side of the temporary support device through the bidirectional threaded rod, the threaded block, the connecting block and the telescopic rod, so that the temporary support device can play a basic protection function while reducing its volume as much as possible, making it easier to enter some narrow tunnels. However, the temporary support device for coal mine excavation is a temporary support, and its support capacity needs to be improved and cannot be widely used in the support of trapezoidal cross-section tunnels or narrow rectangular tunnels. Summary of the invention

[0004] In order to improve the support strength of narrow tunnels, reduce labor intensity, improve operation safety and fully reserve space for people to pass through, the technical solution adopted by the present invention is: a narrow tunnel supporting device, including a machine tunnel supporting component and a ventilation tunnel supporting component; The tunnel support assembly includes a single-row tunnel end bracket group and a tunnel advance bracket group arranged in the tunnel, the single-row tunnel end bracket group and the tunnel advance bracket group are respectively arranged in close contact with the same side of the transfer machine, and the space between the single-row tunnel end bracket group and the tunnel side wall, and the space between the tunnel advance bracket group and the tunnel side wall respectively form pedestrian passages; The air lane support assembly includes a single-row air lane end and tail bracket group and an air lane advance bracket group arranged in the air lane, the air lane advance bracket group is arranged along the center line of the air lane, the single-row air lane end and tail bracket group includes a pair of air lane end and tail brackets connected by air lane push jacks, and a drawer-type middle beam and a telescopic jack are connected between the top beams of the pair of air lane end and tail brackets.

[0005] Based on the above, in order to improve the support safety and prevent tipping, the single-row machine tunnel end bracket group is connected to the transfer machine through a machine tunnel push jack, and a side support jack is provided on one side of the single-row machine tunnel end bracket group to prevent lateral tipping.

[0006] Based on the above, in order to reduce the occupied space, the single-row machine tunnel end bracket group includes a pair of hinged machine tunnel end brackets, and the single-row machine tunnel end bracket group and the machine tunnel advance bracket group are respectively arranged on the same side of the center line of the machine tunnel.

[0007] Based on the above, in order to reduce the occupied space, the machine lane end bracket is a long strip machine lane end bracket, the machine lane advance bracket is a long strip machine lane advance bracket, the machine lane advance bracket group includes multiple machine lane advance brackets, and the machine lane advance bracket pushing jack is connected between two adjacent machine lane advance brackets to form a front-push and back-pull type machine lane advance bracket.

[0008] Based on the above, in order to facilitate the adjustment of the lateral position, a bottom adjustment jack is provided on the base of the machine tunnel end bracket, and the bottom adjustment jack is used to adjust the lateral position of the machine tunnel end bracket in the machine tunnel.

[0009] Based on the above, in order to improve the support capacity and safety, machine tunnel side panels are movably arranged on both sides of the top beam of the machine tunnel end bracket, and the machine tunnel side panels are used to support the top of the machine tunnel.

[0010] Based on the above, the fixed end of the side support jack is hinged on the side of the top beam of the end bracket of the machine tunnel, and the telescopic end of the side support jack is supported on the bottom surface of the machine tunnel.

[0011] Based on the above, in order to facilitate the adjustment of the lateral position, a pair of the wind tunnel end and tail brackets are respectively provided with a frame adjustment jack on their bases, and the frame adjustment jack is used to adjust the lateral position of the wind tunnel end and tail brackets in the wind tunnel.

[0012] Based on the above, in order to improve the support capacity and safety, wind tunnel side panels are respectively provided on both sides of the middle beam and on both sides of the top beam of a pair of wind tunnel end and tail brackets, and the wind tunnel side panels are used to support the top of the wind tunnel.

[0013] The present invention also provides a narrow tunnel support method, comprising the following steps: Provide a supporting device for the narrow tunnel as described above; The single-row machine tunnel end support group and the machine tunnel advance support group are respectively arranged in the machine tunnel and attached to the same side of the transfer machine. When mining coal, the single-row machine tunnel end support group and the machine tunnel advance support are used to support the machine tunnel; when moving the frame, after the single-row machine tunnel end support group is lowered, the transfer machine is used to drive the single-row machine tunnel end support group to move along the machine tunnel, and the machine tunnel advance support group is pushed forward and pulled back to move by itself; after reaching the position, the machine tunnel advance support group and the single-row machine tunnel end support group are used to support the machine tunnel; The single-row wind tunnel end and tail support group and the wind tunnel advance support group are respectively arranged in the wind tunnel, and the wind tunnel advance support is arranged along the center line of the wind tunnel. When mining coal, the single-row wind tunnel end and tail support group and the wind tunnel advance support group are used to support the wind tunnel; when moving the frame, the wind tunnel advance support group is self-moved by pushing forward and pulling backward, the front frame of the wind tunnel end and tail support is lowered, the front frame of the wind tunnel end and tail support is pushed out by the wind tunnel pushing jack, and the telescopic jack is used to push out the Drawer-type middle beam, after the front frame of the air lane end and tail bracket is pushed out, adjust the base position of the front frame of the air lane end and tail bracket, after adjustment in place, lift the front frame of the air lane end and tail bracket, then first lower the rear frame of the air lane end and tail bracket, retract the air lane pushing jack to pull the rear frame of the air lane end and tail bracket, then adjust the base position of the rear frame of the air lane end and tail bracket, finally lift the rear frame of the air lane end and tail bracket, after it is in place, use the single-row air lane end and tail bracket group and the air lane advance bracket group to support the air lane.

[0014] The present invention has outstanding substantial features and significant progress compared to the prior art. Specifically, when supporting the machine tunnel, the single-row machine tunnel end bracket group is selected as a single-row structure, which has a small cross-sectional size and is installed in the tunnel to leave more pedestrian passages. The front part of the single-row machine tunnel end bracket group is connected to the transfer machine through the machine tunnel push jack. The transfer machine moves forward by one step, the piston rod of the transfer machine push jack extends, the single-row machine tunnel end bracket group is lowered, the machine tunnel push jack is collected, the bracket moves forward, and the single-row machine tunnel end bracket group is raised again, thus realizing a frame shifting cycle.

[0015] When supporting the wind tunnel, the front and rear frames are designed as a group. A drawer-type middle beam is arranged between the top beam of the front wind tunnel end bracket and the top beam of the rear wind tunnel end bracket. The drawer-type middle beam is equipped with a telescopic jack, and the guidance is achieved by the extension and retraction of the telescopic jack. A push jack is arranged between the lower part of the front wind tunnel end bracket and the lower part of the rear wind tunnel end bracket. Wind tunnel side guard plates are arranged on both sides of the top beam and the middle beam as needed, and the base is equipped with a frame adjustment jack to adjust the horizontal position of the bracket in the tunnel.

[0016] Specifically, when the end bracket of the wind tunnel is moved, the front frame of the end bracket of the wind tunnel is lowered, the push jack pushes the front frame, and the telescopic jack on the middle beam extends. After the front frame is pushed out, the position of the front frame is adjusted by the jack at the bottom of the front frame base. After the front frame is adjusted to the right position, the front frame is raised, and then the rear frame is moved, the rear frame is lowered first, the push and pull rear frame is retracted, and then the horizontal position of the rear frame base is adjusted, and finally the rear frame is raised, so that a frame moving cycle is completed.

[0017] The function of the push jack between the front and rear frame bases is to realize the pushing and pulling of the front and rear frames. The middle beam between the front and rear frame top beams is a drawer structure. The guidance is achieved by the extension and retraction of the telescopic jack to prevent the frame from falling over during the movement of the bracket.

[0018] The advance support of the wind tunnel adopts the same support method as the advance support of the machine tunnel. The difference is that when the wind tunnel is advanced supported, the support is placed on the center line of the tunnel, with pedestrian passages on both sides.

[0019] Therefore, the narrow tunnel supporting device provided by the present invention adopts a single-row end-end advanced hydraulic support with a small cross-section size to match the coal mining machine, scraper, and conveyor, forming a unique supporting and supporting solution for narrow tunnels and small sections, meeting the support and safety needs of coal mining enterprises. It can improve the support strength of narrow tunnels, reduce labor intensity, improve operation safety, and fully reserve space for people to pass. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the side structure of the machine tunnel support assembly in the narrow tunnel supporting device and support method provided by the present invention.

[0021] Figure 2 It is a schematic diagram of the end face structure of a single-row machine tunnel end support group in the narrow tunnel supporting device and support method provided by the present invention.

[0022] Figure 3 It is a schematic diagram of the top cross-sectional structure of the machine tunnel support assembly in the narrow tunnel supporting device and support method provided by the present invention.

[0023] Figure 4 It is a schematic diagram of the end face structure of the machine tunnel advance support in the narrow tunnel supporting device and support method provided by the present invention.

[0024] Figure 5 It is a schematic diagram of the side structure of the wind tunnel support assembly in the narrow tunnel supporting device and support method provided by the present invention.

[0025] Figure 6 It is a schematic diagram of the end face structure of the wind tunnel end bracket in the narrow tunnel supporting device and supporting method provided by the present invention.

[0026] Figure 7It is a schematic diagram of the top cross-sectional structure of the wind tunnel support assembly in the narrow tunnel supporting device and support method provided by the present invention.

[0027] Figure 8 It is a schematic diagram of the end face structure of the airway advance support in the narrow tunnel supporting device and supporting method provided by the present invention.

[0028] In the figure: 1. Machine tunnel advance support group; 2. Single-row machine tunnel end support group; 3. Machine tunnel push jack; 4. Scraper; 5. Machine tunnel end support; 6. Side support jack; 7. Machine tunnel; 8. Transfer machine; 9. Coal mining machine; 10. Pedestrian passage; 11. Single-row air tunnel end support group; 12. Drawer-type middle beam; 13. Air tunnel advance support group; 14. Telescopic jack; 15. Air tunnel push jack; 16. Air tunnel. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0030] Example 1 This embodiment provides a supporting device for narrow tunnels, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, it includes a machine tunnel support assembly and a wind tunnel support assembly. The machine tunnel support assembly includes a single-row machine tunnel end bracket group 2 and a machine tunnel advance bracket group 1 arranged in the machine tunnel. The single-row machine tunnel end bracket group 2 and the machine tunnel advance bracket group 1 are respectively arranged on the same side of the transfer machine 8. The space between the single-row machine tunnel end bracket group 2 and the side wall of the machine tunnel 7, and the space between the machine tunnel advance bracket group 1 and the side wall of the machine tunnel 7 respectively form a pedestrian passage 10.

[0031] The air lane support assembly includes a single-row air lane end bracket group 11 and an air lane advance bracket group 13 arranged in the air lane 16. The air lane advance bracket group 13 is arranged along the center line of the air lane 16. The single-row air lane end bracket group 11 includes a pair of air lane end brackets connected by an air lane pushing jack 15, and a drawer-type middle beam 12 and a telescopic jack 14 are connected between the top beams of the pair of air lane end brackets.

[0032] In order to reduce the occupied space, the single-row machine tunnel end bracket group 2 includes a pair of hinged machine tunnel end brackets 5. The single-row machine tunnel end bracket group 2 and the machine tunnel advance bracket group 1 are respectively arranged on the same side of the center line of the machine tunnel 7. The machine tunnel end bracket is a long strip machine tunnel end bracket 5, and the machine tunnel advance bracket is a long strip machine tunnel advance bracket. The machine tunnel advance bracket group includes a plurality of machine tunnel advance brackets, and a machine tunnel advance bracket push jack is connected between two adjacent machine tunnel advance brackets to form a front-push and rear-pull machine tunnel advance bracket.

[0033] In order to improve the support safety and prevent tipping, the single-row machine tunnel end bracket group 2 is connected to the transfer machine 8 through the machine tunnel push jack 3. A side support jack 6 for preventing lateral tipping is provided on one side of the machine tunnel end bracket 5. Specifically, the fixed end of the side support jack 6 is hinged on the side of the top beam of the single-row machine tunnel end bracket group 2, and the telescopic end of the side support jack 6 is supported on the bottom surface of the machine tunnel 7.

[0034] Wherein, a scraper 4 and a coal mining machine 9 are arranged near the single-row machine tunnel end support group 2.

[0035] Example 2 This embodiment provides a supporting device for narrow tunnels, which is mainly different from Embodiment 1 in that, in this embodiment: in order to facilitate the adjustment of the lateral position, a bottom adjustment jack is provided on the base of the machine tunnel end bracket 5, and the bottom adjustment jack is used to adjust the lateral position of the machine tunnel end bracket in the machine tunnel 7. A pair of adjustment jacks are respectively provided on the bases of the wind tunnel end brackets, and the adjustment jacks are used to adjust the lateral position of the wind tunnel end brackets in the wind tunnel.

[0036] Example 3 This embodiment provides a supporting device for narrow tunnels, which is mainly different from Embodiment 1 in that, in this embodiment: in order to improve the supporting capacity and safety, the machine tunnel side panels are movably arranged on both sides of the top beam of the machine tunnel end bracket 5, and the machine tunnel side panels are used to support the top of the machine tunnel. Wind tunnel side panels are respectively arranged on both sides of the middle beam and on both sides of the top beam of a pair of wind tunnel end brackets, and the wind tunnel side panels are used to support the top of the wind tunnel.

[0037] Among them, the narrow tunnel supporting device provided by the present invention can set movable side supports on both sides of the top beam of the machine tunnel end support, and adjust the length of the side supports according to the top protection space. The single-row machine tunnel end support group adjusts the support length and structure according to the single-scraper machine or double-scraper machine. That is, when a double-scraper machine is selected, the top beam and the base can be designed to be a three-section structure to meet the matching requirements of the double heads. At the same time, a bottom adjustment jack that can adjust the frame laterally is arranged on the base of the single-row machine tunnel end support group, and the lateral position of the single-row machine tunnel end support group in the tunnel can be adjusted. In addition, a long-stroke side support jack is arranged on the side of the top beam of the machine tunnel end support to support the side of the support to prevent the support from tipping toward the pedestrian side.

[0038] On the other hand, a machine lane advance bracket is arranged at the front of the single-row machine lane end bracket group. The machine lane advance bracket has a small cross-sectional size like the single-row machine lane end bracket group, and can be installed close to the relocation, so as to leave more pedestrian passages between the bracket and the lane side. A machine lane push jack is arranged between the front and rear frames of the machine lane advance bracket, and the frame can be pushed forward and pulled backward by extending and retracting the jack.

[0039] When installing the equipment, the conveyor should be close to the side of the working face, and the head of the machine should be placed as close to the working face as possible, leaving as much space as possible on the outside of the transfer machine to facilitate the installation of the end bracket.

[0040] Example 4 This embodiment provides a narrow tunnel support method, comprising the following steps: Provide a supporting device for the narrow tunnel as described above; The single-row machine tunnel end support group and the machine tunnel advance support group are respectively arranged in the machine tunnel and attached to the same side of the transfer machine. When mining coal, the single-row machine tunnel end support group and the machine tunnel advance support are used to support the machine tunnel; when moving the frame, after the single-row machine tunnel end support group is lowered, the transfer machine is used to drive the single-row machine tunnel end support group to move along the machine tunnel, and the machine tunnel advance support group is pushed forward and pulled back to move by itself; after reaching the position, the machine tunnel advance support group and the single-row machine tunnel end support group are used to support the machine tunnel; The single-row wind tunnel end and tail support group and the wind tunnel advance support group are respectively arranged in the wind tunnel, and the wind tunnel advance support is arranged along the center line of the wind tunnel. When mining coal, the single-row wind tunnel end and tail support group and the wind tunnel advance support group are used to support the wind tunnel; when moving the frame, the wind tunnel advance support group is self-moved by pushing forward and pulling backward, the front frame of the wind tunnel end and tail support is lowered, the front frame of the wind tunnel end and tail support is pushed out by the wind tunnel pushing jack, and the telescopic jack is used to push out the Drawer-type middle beam, after the front frame of the air lane end and tail bracket is pushed out, adjust the base position of the front frame of the air lane end and tail bracket, after adjustment in place, lift the front frame of the air lane end and tail bracket, then first lower the rear frame of the air lane end and tail bracket, retract the air lane pushing jack to pull the rear frame of the air lane end and tail bracket, then adjust the base position of the rear frame of the air lane end and tail bracket, finally lift the rear frame of the air lane end and tail bracket, after it is in place, use the single-row air lane end and tail bracket group and the air lane advance bracket group to support the air lane.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A supporting device for narrow tunnels, characterized in that: It includes machine lane support components and ventilation lane support components; The tunnel support assembly includes a single-row tunnel end bracket group and a tunnel advance bracket group arranged in the tunnel, the single-row tunnel end bracket group and the tunnel advance bracket group are respectively arranged in close contact with the same side of the transfer machine, and the space between the single-row tunnel end bracket group and the tunnel side wall, and the space between the tunnel advance bracket group and the tunnel side wall respectively form pedestrian passages; The air lane support assembly includes a single-row air lane end and tail bracket group and an air lane advance bracket group arranged in the air lane, the air lane advance bracket group is arranged along the center line of the air lane, the single-row air lane end and tail bracket group includes a pair of air lane end and tail brackets connected by air lane push jacks, and a drawer-type middle beam and a telescopic jack are connected between the top beams of the pair of air lane end and tail brackets.

2. The narrow tunnel supporting device according to claim 1 is characterized in that: The single-row machine lane end bracket group is connected to the transfer machine through a machine lane pushing jack, and a side support jack is provided on one side of the single-row machine lane end bracket group for preventing lateral tipping.

3. The narrow tunnel supporting device according to claim 2 is characterized in that: The single-row machine tunnel end bracket group includes a pair of hinged machine tunnel end brackets, and the single-row machine tunnel end bracket group and the machine tunnel advance bracket group are respectively arranged on the same side of the center line of the machine tunnel.

4. The narrow tunnel supporting device according to claim 3 is characterized in that: The machine lane end bracket is a long strip machine lane end bracket, the machine lane advance bracket is a long strip machine lane advance bracket, the machine lane advance bracket group includes multiple machine lane advance brackets, and a machine lane advance bracket pushing jack is connected between two adjacent machine lane advance brackets to form a front-push and rear-pull type machine lane advance bracket.

5. The narrow tunnel supporting device according to claim 4 is characterized in that: A bottom adjustment jack is arranged on the base of the machine tunnel end bracket, and the bottom adjustment jack is used to adjust the lateral position of the machine tunnel end bracket in the machine tunnel.

6. The narrow tunnel supporting device according to claim 5 is characterized in that: The machine tunnel side panels are movably arranged on both sides of the top beam of the machine tunnel end bracket, and the machine tunnel side panels are used to support the top of the machine tunnel.

7. The narrow tunnel supporting device according to claim 6 is characterized in that: The fixed end of the side support jack is hinged on the side of the top beam of the end bracket of the machine tunnel, and the telescopic end of the side support jack is supported on the bottom surface of the machine tunnel.

8. The narrow tunnel supporting device according to claim 7, characterized in that: A pair of adjusting jacks are respectively arranged on the bases of the end and tail brackets of the air lane, and the adjusting jacks are used to adjust the lateral positions of the end and tail brackets of the air lane in the air lane.

9. The narrow tunnel supporting device according to claim 8, characterized in that: Wind tunnel side panels are respectively arranged on both sides of the middle beam and on both sides of the top beam of a pair of wind tunnel end and tail brackets, and the wind tunnel side panels are used to support the top of the wind tunnel.

10. A narrow tunnel support method comprising the following steps: Provided is a narrow tunnel supporting device as claimed in any one of claims 1 to 9; The single-row machine tunnel end support group and the machine tunnel advance support group are respectively arranged in the machine tunnel and attached to the same side of the transfer machine. When mining coal, the single-row machine tunnel end support group and the machine tunnel advance support are used to support the machine tunnel; when moving the frame, after the single-row machine tunnel end support group is lowered, the transfer machine is used to drive the single-row machine tunnel end support group to move along the machine tunnel, and the machine tunnel advance support group is pushed forward and pulled back to move by itself; after reaching the position, the machine tunnel advance support group and the single-row machine tunnel end support group are used to support the machine tunnel; The single-row wind tunnel end and tail support group and the wind tunnel advance support group are respectively arranged in the wind tunnel, and the wind tunnel advance support is arranged along the center line of the wind tunnel. When mining coal, the single-row wind tunnel end and tail support group and the wind tunnel advance support group are used to support the wind tunnel; when moving the frame, the wind tunnel advance support group is self-moved by pushing forward and pulling backward, the front frame of the wind tunnel end and tail support is lowered, the front frame of the wind tunnel end and tail support is pushed out by the wind tunnel pushing jack, and the telescopic jack is used to push out the Drawer-type middle beam, after the front frame of the air lane end and tail bracket is pushed out, adjust the base position of the front frame of the air lane end and tail bracket, after adjustment in place, lift the front frame of the air lane end and tail bracket, then first lower the rear frame of the air lane end and tail bracket, retract the air lane pushing jack to pull the rear frame of the air lane end and tail bracket, then adjust the base position of the rear frame of the air lane end and tail bracket, finally lift the rear frame of the air lane end and tail bracket, after it is in place, use the single-row air lane end and tail bracket group and the air lane advance bracket group to support the air lane.

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