Complete supporting equipment for gob-side entry driving in soft composite roof and floor large mining height working face

Abstract

The application discloses a complete supporting equipment for gob-side entry retaining of a soft composite roof and floor large-mining-height working face, which is composed of three end-anchor-avoiding supports, one mining-anchor integrated end support, one end-gob-sealing support, one set of gangue-blocking supports, one set of hanging-mold devices and multiple unit supports; the three end-anchor-avoiding supports are sequentially arranged from the entry to the working face, the mining-anchor integrated end support is arranged close to the innermost end-anchor-avoiding support, the end-gob-sealing support is arranged close to the mining-anchor integrated end support, the gangue-blocking supports are arranged close to the rear of the end-gob-sealing support and the mining-anchor integrated end support, and the gangue-blocking plate at the tail of the end-gob-sealing support is always overlapped with the gangue-blocking plate outside the gangue-blocking supports; the hanging-mold devices are arranged close to the rear of the end-anchor-avoiding supports inside the gangue-blocking supports; and the unit supports are arranged after the hanging-mold devices are demolded and the supports are moved. The application solves the problems of difficult end area enclosure and damage of original support in the entry of the gob-side entry retaining of the soft composite roof and floor large-mining-height working face.

Description

Technical Field

[0001] This invention belongs to the field of coal mine gob-side roadway support technology, specifically relating to a complete set of support equipment for gob-side roadway retention in high-mining working faces with weak composite roof and floor. Background Technology

[0002] The basic principle of goaf retention is to construct a roadway support structure along the edge of the goaf behind the end support after the working face has been mined, thus preserving the original roadway for the next working face. Therefore, the key technologies for goaf retention are end area support and roof support within the roadway.

[0003] For roadway retention along the goaf in a high-extraction working face with weak composite roof and floor, the lithology of the roof strata is relatively weak, and the phenomenon of crossing over during mining is prone to occur, making it difficult to support the roof in the end area. At the same time, in order to maintain the integrity of the roadway roof, a large number of anchor bolts (cables) are installed in the roof of the roadway. During the relocation of the end support, the original support in the roadway will be damaged, and it is necessary to re-install them after the support is installed. This not only slows down the construction speed of roadway retention, but also increases the cost of roadway retention.

[0004] Based on the above problems, it is necessary to develop a complete support system for roadway retention along the goaf in high-extraction working faces with weak composite roof and floor, so as to improve the support effect of the roadway end area and roof and ensure the safety of roadway support. Summary of the Invention

[0005] The purpose of this invention is to provide a complete set of support equipment for gob-side roadway retention in high-extraction working faces with weak composite roof and floor, to solve the problems of difficult end area protection and damage to the original support in the roadway.

[0006] To achieve the above objectives, the technical solution adopted in this invention is as follows: a complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor, consisting of three end-head anchor supports, one integrated mining and anchoring end-head support, one end-head sealing support, a set of retaining supports, a set of formwork hanging devices, and multiple unit supports; the three end-head anchor supports are arranged sequentially from the roadway towards the working face, with the integrated mining and anchoring end-head support positioned close to the innermost end-head anchor support, the end-head sealing support positioned close to the integrated mining and anchoring end-head support, and the retaining supports positioned close to the end-head sealing support and the integrated mining and anchoring end-head support behind them, with the sealing plate at the tail of the sealing support always overlapping with the retaining plate on the outer side of the retaining support; the formwork hanging device is positioned inside the retaining support, close to the rear of the end-head anchor supports; and the unit supports are positioned after the formwork hanging device is disassembled and moved.

[0007] The technical solution of the present invention also has the following characteristics:

[0008] The end anchor bracket includes a base A, a telescopic column A, a linkage mechanism A, a front top beam A, a rear top beam A, a top protection jack A, and an anchor block A. The front top beam A is vertically and flexibly mounted on the base A via the telescopic column A and the linkage mechanism A. The front top beam A and the rear top beam A are hinged together. The rear top beam A is connected to the telescopic end of the top protection jack A. The base of the top protection jack A is fixed on the linkage mechanism A. The anchor block A is slidably arranged on the front top beam A and the rear top beam A.

[0009] The integrated anchoring end support includes a front base B, a rear base B, a front telescopic column B, a rear telescopic column B, a linkage mechanism B, a front top beam B, and a rear top beam B. The front base B and the rear base B are hinged together, and the front top beam B and the rear top beam B are hinged together. The front top beam B is movably mounted on the front base B via the front telescopic column B and the linkage mechanism B, and the rear top beam B is movably mounted on the rear base B via the rear telescopic column B.

[0010] The end sealing support includes a front base C, a rear base C, a front telescopic column C, a rear telescopic column C, a linkage mechanism C, a front top beam C, a rear top beam C, and a sealing plate C. The front base C and the rear base C are hinged together, and the front top beam C and the rear top beam C are hinged together. The front top beam C is vertically mounted on the front base C via the front telescopic column C and the linkage mechanism C. The rear top beam C is vertically mounted on the rear base C via the rear telescopic column C. The sealing plate C is installed on the lower rear end of the rear top beam C.

[0011] The waste rock retainer includes a front base D, a rear base D, a front telescopic column D, a rear telescopic column D, a linkage mechanism D, a front top beam D, a rear top beam D, and a waste rock retainer plate D. The front base D and the rear base D are hinged together, and the front top beam D and the rear top beam D are hinged together. The front top beam D is vertically and flexibly mounted on the front base D via the front telescopic column D and the linkage mechanism D. The rear top beam D is vertically and flexibly mounted on the rear base D via the rear telescopic column D and the linkage mechanism D. The waste rock retainer plate D is installed on the lower front end of the front top beam D.

[0012] The formwork hanging device consists of two sections, front and rear, and the length of the formwork hanging device can be selected according to the requirements of the tunnel.

[0013] The hanging mold device includes a front base E, a rear base E, a front telescopic column E, a rear telescopic column E, a front top beam E, a rear top beam E, a shaping plate E, a width-adjusting jack E, and a pushing jack E. The front base E and the rear base E are connected together by the pushing jack E. The front top beam E is movably mounted on the front base E via the front telescopic column E, and the rear top beam E is movably mounted on the rear base E via the rear telescopic column E. The width-adjusting jack E is provided on the side of the rear base E and the front base E, and the shaping plate is provided at the tail of the rear top beam E.

[0014] The unit support includes a base F, a telescopic column F, a top beam F, an anchor block F, and a jack F; the top beam F is vertically mounted on the base F via the telescopic column F, the anchor block F is slidably mounted on the top beam F, and the jack F is located on the side of the base F.

[0015] The temporary support range of the unit support is within 240m behind the working face. It adopts a cyclical arrangement of dismantling and replenishing, and the center distance between two adjacent unit supports is no more than 3000mm.

[0016] When moving the unit support, first use the pushing jack F to move it to the position in the tunnel, and then use the unit support transport vehicle to quickly transfer it to the designated installation position.

[0017] The beneficial effects of this invention are: (1) The complete set of support equipment for leaving the roadway along the goaf in the soft composite roof and floor high mining face of the present invention, the end anchor bracket arranged in the roadway can protect the original roof support in the roadway from being damaged when the roof is supported, reduce the need to install anchor bolts (cables) in the roadway, and reduce the cost of leaving the roadway.

[0018] (2) The complete set of support equipment for roadway retention along the goaf of the soft composite roof and floor plate with high mining height in the present invention, the integrated mining and anchoring end support in the end area realizes that the roof reinforcement in the end area and the coal mining in the working face do not interfere with each other, and improves the efficiency of roadway retention construction.

[0019] (3) The complete set of support equipment for leaving the goaf in the working face with a large mining height and weak composite roof and floor of the present invention, the end area sealing support and the ZRL45000 / 25 / 45D type blocking support together isolate the goaf gangue, and at the same time the blocking support moves closely with the end support to reduce the empty roof behind the support, forming a space for leaving the goaf.

[0020] (4) The complete set of support equipment for leaving the roadway along the goaf in the soft composite roof and floor plate high mining face of the present invention uses a formwork hanging device to support the roof plate of the roadway working space together with the rock retaining support before the roadway support body is poured. At the same time, the front frame of the formwork hanging device closely follows the tail beam of the end support to reduce the area of ​​the empty roof behind the frame and reduce the safety hazards of leaving the roadway.

[0021] (5) The complete set of support equipment for the soft composite roof and floor plate large mining face with gob-side roadway retention of the present invention has high roadway unit support resistance and is easy to transport. The lateral position of the unit support can be automatically adjusted by the jack of the base and the unit support transport vehicle can be used to realize rapid transport and arrangement. At the same time, the anchor block above the top beam can protect the anchor rod (cable) in the roadway from being damaged. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the layout of a complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor. Figure 2 yes Figure 1 Schematic diagram of the middle end anchor support structure; Figure 3 yes Figure 1 Schematic diagram of the integrated anchor end support structure of Zhongcai; Figure 4 yes Figure 1 Schematic diagram of the middle end sealing support structure; Figure 5 yes Figure 1 Schematic diagram of the middle-barrier gangue support structure; Figure 6 yes Figure 1 Schematic diagram of the middle hanging mold device; Figure 7 yes Figure 1 Schematic diagram of the middle unit support structure.

[0023] In the figure: 1. End anchor support, 2. Integrated mining and anchoring end support, 3. End sealing support, 4. Rock blocking support, 5. Hanging formwork device, 6. Unit support.

[0024] 11. Base A, 12. Column A, 13. Linkage Mechanism A, 14. Front Top Beam A, 15. Rear Top Beam A, 16. Top Jack A, 17. Anchor Block A; 21. Front base B, 22. Rear base B, 23. Front telescopic column B, 24. Rear telescopic column B, 25. Linkage mechanism B, 26. Front top beam B, 27. Rear top beam B; 31. Front base C; 32. Rear base C; 33. Front telescopic column C; 34. Rear telescopic column C; 35. Linkage mechanism C; 36. Front top beam C; 37. Rear top beam C; 38. Sealing plate C; 41. Front base D, 42. Rear base D, 43. Front telescopic column D, 44. Rear telescopic column D, 45. Linkage mechanism D, 46. Front top beam D, 47. Rear top beam D, 48. Barrier plate D; 51. Front base E, 52. Rear base E, 53. Front telescopic column E, 54. Rear telescopic column E, 55. Front top beam E, 56. Rear top beam E, 57. Shaping plate, 58. Width adjustment jack E, 59. Pushing jack E; 61. Base F, 62. Column F, 63. Top beam F, 64. Anchor block F, 65. Push jack F. Detailed Implementation

[0025] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1 like Figure 1 As shown, the present invention discloses a complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor. It consists of three end-head anchor supports 1, one integrated mining and anchoring end-head support 2, one end-head sealing support 3, a set of retaining supports 4, a set of formwork hanging devices 5, and multiple unit supports 6. The three end-head anchor supports 1 are arranged sequentially from the roadway towards the working face. The integrated mining and anchoring end-head support 2 is arranged close to the innermost end-head anchor support 1. The end-head sealing support 3 is arranged close to the integrated mining and anchoring end-head support 2. The retaining support 4 is arranged close to the end-head sealing support 3 and the integrated mining and anchoring end-head support 2, and the sealing plate C at the tail of the sealing support 3 always overlaps with the retaining plate D on the outer side of the retaining support 4. The formwork hanging device 5 is arranged inside the retaining support 4, close to the rear of the end-head anchor support 1. The unit supports 6 are arranged after the formwork hanging device 5 is disassembled and moved.

[0027] The end anchor support 1 is a ZYT13000 / 25 / 45D type end anchor support; the mining and anchoring integrated end support 2 is a ZZTP24000 / 25 / 45D type mining and anchoring integrated end support; the end sealing support 3 is a ZZTP24000 / 25 / 45D type end sealing support; the rock blocking support 4 is a ZRL45000 / 25 / 45D type rock blocking support; the formwork hanging device 5 is a JGRZ6 / 24 / 45D type formwork hanging device; and the unit support 6 is a ZQ6400 / 22 / 45D type unit support.

[0028] like Figure 1 and Figure 2 As shown, the ZYT13000 / 25 / 45D type end anchor support 1 is arranged in the roadway. A 1300mm pedestrian passage is left between the outermost anchor support and the secondary mining side. When in use, the gap of the anchor block A 17 on the top beam is adjusted so that the roof anchor (cable) in the roadway is located in the groove of the two anchor blocks, protecting the original support in the roadway from being damaged.

[0029] like Figure 1 and Figure 3 As shown, the ZZTP24000 / 25 / 45D type integrated mining and anchoring end support 2 is arranged close to the innermost end anchor support 1. When reinforcing the top plate and fixing the top net in the end area, the workers use the anchor drilling rig to complete the installation of anchor bolts (cables) under the cover of the rear top beam B27, ensuring that the coal mining in the working face and the roof reinforcement in the end area do not interfere with each other.

[0030] like Figure 1 , Figure 4 and Figure 5 As shown, the ZZTP24000 / 25 / 45D type end sealing support 3 is arranged close to the mining and anchoring integrated end support 2, and its sealing plate C 38 overlaps with the blocking plate D 48 on the ZRL45000 / 25 / 45D type blocking support 4; the blocking support 4 is arranged closely following the mining and anchoring integrated end support 2 and the end sealing support 3; the blocking support 4 always closely follows the tail beam of the working face end support by alternating self-movement of the left and right frames.

[0031] like Figure 1 and Figure 6 As shown, the JGRZ6 / 24 / 45D type formwork hanging device 5 is located close to the rear of the end anchor support 1 and 500mm inside the rock retaining support 4. When the formwork hanging device 5 is working, the front frame of the formwork hanging device moves closely to the rear end of the end anchor top beam of the working face by pushing the jack E 59, ensuring that the maximum empty top distance is not greater than 2000mm.

[0032] like Figure 1 and Figure 7 As shown, the ZQ6400 / 22 / 45D type unit support 6 is arranged 800mm from the edge of the roadway support after the formwork device 5 is removed and moved. The gap between two adjacent unit supports is no more than 3000mm. When arranging the unit supports, the position of the anchor block F 64 is adjusted to protect the roadway support from damage. The temporary support range of the unit support is no less than 240m, and the cyclic support is carried out by dismantling and replenishing. When transporting the unit support, it is moved to the position in the roadway by pushing the jack F 65, and then transported to the designated installation position by the support transport vehicle, which improves the support efficiency and reduces the labor intensity.

[0033] In summary, this invention provides a complete support system for gob-side roadway retention in high-extraction working faces with weak composite roof and floor. By using a complete gob-side roadway retention system composed of ZYT13000 / 25 / 45D type end-face anchor support, ZZTP24000 / 25 / 45D type integrated mining and anchor end-face support, ZZTP24000 / 25 / 45D type end-face sealing support, ZRL45000 / 25 / 45D type retaining support, JGRZ6 / 24 / 45D type formwork hanging device, and ZQ6400 / 22 / 45D type unit support, this system effectively solves the problems of roof support in the end-face area and roof support within the roadway. It improves the roof support efficiency of gob-side roadway retention, reduces roadway retention costs, and eliminates safety hazards. Therefore, this system has good operability and economy.

[0034] Example 2 like Figure 1 and Figure 2As shown, unlike Embodiment 1, Embodiment 2 presents a complete set of support equipment for gob-side roadway retention in a high-extraction working face with a weak composite roof and floor. The end anchor support includes a base A 11, a telescopic column A 12, a linkage mechanism A 13, a front top beam A 14, a rear top beam A 15, a roof support jack A 16, and an anchor block A 17. The front top beam A 14 is vertically and flexibly mounted on the base A 11 via the telescopic column A 12 and the linkage mechanism A 13. The front top beam A 14 and the rear top beam A 15 are hinged together. The rear top beam A 15 is connected to the telescopic end of the roof support jack A 16. The base of the roof support jack A 16 is fixed on the linkage mechanism A 13. The anchor block A 17 is slidably arranged on the front top beam A 14 and the rear top beam A 15.

[0035] During operation, the front roof beam A14 is lifted by the telescopic column A12, and the rear roof beam A15 is lifted by the roof support jack A16, thus providing support. When moving the support structure, the telescopic column A12 is retracted, and support is no longer required to facilitate the movement. During use, the gap between the anchor blocks A17 on the roof beam is adjusted to ensure that the roof anchors (cables) in the tunnel are positioned in the grooves between the two anchor blocks, protecting the existing support structure from damage.

[0036] Example 3 like Figure 1 and Figure 3 As shown, unlike Embodiment 1, in Embodiment 3, a complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor of the present invention includes: the integrated mining and anchoring end support 2 comprising a front base B 21, a rear base B 22, a front telescopic column B 23, a rear telescopic column B 24, a linkage mechanism B 25, a front top beam B 26, and a rear top beam B 27. The front base B 21 and the rear base B 22 are hinged together, and the front top beam B 26 and the rear top beam B 27 are hinged together. The front top beam B 26 is movably mounted on the front base B 21 via the front telescopic column B 23 and the linkage mechanism B 25, and the rear top beam B 27 is movably mounted on the rear base B 22 via the rear telescopic column B 24.

[0037] The ZZTP24000 / 25 / 45D type integrated mining and anchoring end support 2 is arranged close to the innermost end anchor support 1. When reinforcing the roof of the end area and fixing the roof net, the workers use the anchor drilling rig to complete the installation of anchor bolts (cables) under the cover of the rear top beam B 27, ensuring that the coal mining of the working face and the roof reinforcement of the end area do not interfere with each other.

[0038] Example 4 like Figure 1 As shown, unlike Example 1, in Example 4, a complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor according to the present invention, such as... Figure 4As shown, the end sealing support 3 includes a front base C31, a rear base C32, a front telescopic column C33, a rear telescopic column C34, a linkage mechanism C35, a front top beam C36, a rear top beam C37, and a sealing plate C38. The front base C31 and the rear base C32 are hinged together, and the front top beam C36 and the rear top beam C37 are hinged together. The front top beam C36 is movably mounted on the front base C31 via the front telescopic column C33 and the linkage mechanism C35. The rear top beam C37 is movably mounted on the rear base C32 via the rear telescopic column C34. The sealing plate C38 is installed on the lower rear end of the rear top beam C37.

[0039] like Figure 5 As shown, the rock-blocking bracket 4 includes a front base D 41, a rear base D 42, a front telescopic column D 43, a rear telescopic column D 44, a linkage mechanism D 45, a front top beam D 46, a rear top beam D 47, and a rock-blocking plate D 38. The front base D 41 and the rear base D 42 are hinged together, and the front top beam D 46 and the rear top beam D 47 are hinged together. The front top beam D 46 is movably mounted on the front base D 41 via the front telescopic column D 43 and the linkage mechanism D 45. The rear top beam D 47 is movably mounted on the rear base D 42 via the rear telescopic column D 44 and the linkage mechanism D 45. The rock-blocking plate D 38 is installed on the lower front end of the front top beam D 46.

[0040] like Figure 1 , Figure 4 and Figure 5 As shown, the ZZTP24000 / 25 / 45D type end sealing support 3 is arranged close to the mining and anchoring integrated end support 2, and its sealing plate C 38 overlaps with the blocking plate D 48 on the ZRL45000 / 25 / 45D type blocking support 4; the blocking support 4 is arranged closely following the mining and anchoring integrated end support 2 and the end sealing support 3; the blocking support 4 always closely follows the tail beam of the working face end support by alternating self-movement of the left and right frames.

[0041] Example 5 like Figure 1 As shown, unlike Example 1, in Example 5, a complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor according to the present invention: as follows: Figure 6As shown, the formwork hanging device 6 consists of two sections, front and rear, and the length of the formwork hanging device 5 can be selected according to the requirements of the tunnel. The formwork hanging device 5 includes a front base E 51, a rear base E 52, a front telescopic column E 53, a rear telescopic column E 54, a front top beam E 55, a rear top beam E 56, a shaping plate 57, a width-adjusting jack E 58, and a pushing jack E 59. The front base E 51 and the rear base E 52 are connected together by the pushing jack E 59. The front top beam E 55 is movably mounted on the front base E 51 via the front telescopic column E 53, and the rear top beam E 56 is movably mounted on the rear base E 52 via the rear telescopic column E 54. The width-adjusting jack E 59 is provided on the side of the rear base E 52 and the front base E 51, and the shaping plate 57 is provided at the tail of the rear top beam E 56.

[0042] like Figure 1 and Figure 6 As shown, the JGRZ6 / 24 / 45D type formwork hanging device 5 is located close to the rear of the end anchor bracket 1 and 500mm inside the rock retaining bracket 4. When the formwork hanging device 5 is working, the front frame of the formwork hanging device 5 moves closely to the rear end of the end anchor beam of the working face by pushing the jack E 59, ensuring that the maximum empty top distance is not greater than 2000mm.

[0043] Example 6 like Figure 1 As shown, unlike Example 1, in Example 6, a complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor according to the present invention: as follows Figure 7 As shown, the unit support 6 includes a base F 61, a telescopic column F 62, a top beam F 63, an anchor block F 64, and a jack F 65. The top beam F 63 is vertically mounted on the base F 61 via the telescopic column F 62, the anchor block F 64 is slidably mounted on the top beam F 63, and the jack F 65 is located on the side of the base F 61.

[0044] The temporary support range of unit support 6 is within 240m behind the working face. It adopts a cyclical arrangement of dismantling and replacing, and the center distance between two adjacent unit supports is no more than 3000mm. When moving the unit support, first use the F65 pushing jack to move it to the position in the roadway, and then use the unit support 6 transport vehicle to quickly transfer it to the designated installation position.

[0045] The ZQ6400 / 22 / 45D type unit support 6 is arranged 800mm from the edge of the roadway support after the formwork device 5 is removed and moved. The distance between the top of two adjacent unit supports is no more than 3000mm. When arranging the unit supports, the position of the anchor block F 64 is adjusted to protect the roadway support from damage. The temporary support range of the unit support 6 is no less than 240m, and cyclic support is carried out by dismantling and replenishing the previous support. When transporting the unit support 6, it is moved to the position in the roadway by pushing the jack F 65, and then transported to the designated installation position by the support transport vehicle, which improves the support efficiency and reduces the labor intensity.

Claims

1. A complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor, characterized in that: It consists of three end-anchor support structures, one integrated mining and anchoring end-anchor support structure, one end-sealing support structure, a set of retaining supports, a formwork hanging device, and multiple unit supports. The three end-anchor support structures are arranged sequentially from the roadway towards the working face. The integrated mining and anchoring end-anchor support structure is placed close to the innermost end-anchor support structure. The end-sealing support structure is placed close to the integrated mining and anchoring end-anchor support structure. The retaining supports structure is placed close to the end-sealing support structure and the integrated mining and anchoring end-anchor support structure, and the sealing plate at the tail of the sealing support structure always overlaps with the retaining plate on the outer side of the retaining support structure. The formwork hanging device structure is placed inside the retaining support structure and close to the end-anchor support structure. The unit supports structure is placed after the formwork hanging device is dismantled and moved.

2. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 1, characterized in that, The end anchor bracket includes a base A, a telescopic column A, a linkage mechanism A, a front top beam A, a rear top beam A, a top protection jack A, and an anchor block A. The front top beam A is vertically and flexibly mounted on the base A via the telescopic column A and the linkage mechanism A. The front top beam A and the rear top beam A are hinged together. The rear top beam A is connected to the telescopic end of the top protection jack A. The base of the top protection jack A is fixed on the linkage mechanism A. The anchor block A is slidably arranged on the front top beam A and the rear top beam A.

3. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 1, characterized in that, The integrated anchoring end support includes a front base B, a rear base B, a front telescopic column B, a rear telescopic column B, a linkage mechanism B, a front top beam B, and a rear top beam B. The front base B and the rear base B are hinged together, and the front top beam B and the rear top beam B are hinged together. The front top beam B is movably mounted on the front base B via the front telescopic column B and the linkage mechanism B, and the rear top beam B is movably mounted on the rear base B via the rear telescopic column B.

4. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 3, characterized in that, The end sealing support includes a front base C, a rear base C, a front telescopic column C, a rear telescopic column C, a linkage mechanism C, a front top beam C, a rear top beam C, and a sealing plate; the front base C and the rear base C are hinged together, the front top beam C and the rear top beam C are hinged together, the front top beam C is movably mounted on the front base C via the front telescopic column C and the linkage mechanism C, the rear top beam C is movably mounted on the rear base C via the rear telescopic column C, and the sealing plate C is installed on the lower rear end of the rear top beam C.

5. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 4, characterized in that, The waste rock retainer includes a front base D, a rear base D, a front telescopic column D, a rear telescopic column D, a linkage mechanism D, a front top beam D, a rear top beam D, and a waste rock retainer plate D. The front base D and the rear base D are hinged together, and the front top beam D and the rear top beam D are hinged together. The front top beam D is vertically and flexibly mounted on the front base D via the front telescopic column D and the linkage mechanism D. The rear top beam D is vertically and flexibly mounted on the rear base D via the rear telescopic column D and the linkage mechanism D. The waste rock retainer plate D is installed on the lower front end of the front top beam D.

6. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 1, characterized in that, The formwork hanging device consists of two sections, front and rear, and the length of the formwork hanging device can be selected according to the requirements of the tunnel.

7. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 6, characterized in that, The hanging mold device includes a front base E, a rear base E, a front telescopic column E, a rear telescopic column E, a front top beam E, a rear top beam E, a shaping plate E, a width-adjusting jack E, and a pushing jack E. The front base E and the rear base E are connected together by the pushing jack E. The front top beam E is movably mounted on the front base E via the front telescopic column E, and the rear top beam E is movably mounted on the rear base E via the rear telescopic column E. The width-adjusting jack E is provided on the side of the rear base E and the front base E, and the shaping plate is provided at the tail of the rear top beam E.

8. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 7, characterized in that, The unit support includes a base F, a telescopic column F, a top beam F, an anchor block F, and a jack F; the top beam F is vertically mounted on the base F via the telescopic column F, the anchor block F is slidably mounted on the top beam F, and the jack F is located on the side of the base F.

9. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 8, characterized in that, The temporary support range of the unit support is within 240m behind the working face. It adopts a cyclical arrangement of dismantling and replenishing, and the center distance between two adjacent unit supports is no more than 3000mm.

10. The complete set of support equipment for gob-side roadway retention in a high-extraction working face with weak composite roof and floor as described in claim 9, characterized in that, When moving the unit support, first use the pushing jack F to move it to the position in the tunnel, and then use the unit support transport vehicle to quickly transfer it to the designated installation position.

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