A support structure for a mine filling tunnel along the empty excavation tunnel

Abstract

The present invention discloses a supporting structure for a mine filling tunnel along an empty excavation tunnel, comprising a supporting assembly for supporting a roof and a roof repair assembly for repairing the roof, wherein the roof is first repaired by the roof repair assembly before being supported by the supporting assembly, the roof repair assembly at least comprising a film supply assembly and a film collection assembly, the film supply assembly and the film collection assembly jointly retracting and releasing the same film, the film being coated with slurry, and the slurry can be delivered to the roof by means of the film.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support, in particular to a supporting structure for a mine filling tunnel along the goaf-dig retaining tunnel. Background Art

[0002] When supporting the tunnel along the goaf, the slurry is often sprayed directly onto the roof. However, the adhesion of the slurry after spraying is average and it is easy to fall, resulting in a waste of slurry and being unfavorable for the construction. When using anchor rods to support the roof, holes are often drilled directly and anchor rods are lowered into the holes. The overall anchoring effect is average.

[0003] Therefore, it is necessary to provide a support structure for a mine filling tunnel along the goaf to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a support structure for a mine filling tunnel along the goaf-retained tunnel, comprising a support assembly for supporting a roof and a roof repair assembly for repairing the roof, wherein the roof is first repaired by the roof repair assembly before being supported by the support assembly, the roof repair assembly at least comprising a film supply assembly and a film collection assembly, the film supply assembly and the film collection assembly jointly retracting and releasing the same film, the film being coated with slurry, and the slurry can be delivered to the roof by using the film.

[0005] Further, preferably, the film supply assembly and the film collection assembly have the same structure and both include a screw mechanism having a longitudinal driving end, an outer cylinder being fixed to the longitudinal driving end, an inner roller being rotatably arranged in the outer cylinder, a film being wound around the inner roller, and a coating head being further arranged between the outer cylinder and the inner roller.

[0006] Furthermore, as a preference, a first track is also provided between the two longitudinal driving ends, an adaptive rolling assembly is movably provided on the first track, the adaptive rolling assembly comprises a first movable seat, an articulated arm is hinged on the first movable seat, an adaptive telescopic member is hinged at the middle part of the articulated arm, the other end of the adaptive telescopic member is hinged to the first movable seat, a pressure roller is also rotatably provided on the articulated arm, and the pressure roller abuts against the bottom of the coating.

[0007] Furthermore, as a preference, a second track is provided between the two longitudinal driving ends, a crushing and cleaning assembly is movably provided on the second track, the crushing and cleaning assembly comprises a second movable seat, a plurality of rock breaking heads are slidably provided on the second movable seat, the rock breaking heads are driven by an oscillator, the oscillator is fixed on the second movable seat, a swing seat is also fixed in the second movable seat, a blowing head is hinged on the swing seat, and the blowing head is driven to swing by a telescopic rod.

[0008] Further, preferably, the coating is a double-layer structure, which comprises an upper elastic film structure and a lower grid structure. There is a certain degree of adhesion between the upper elastic film structure and the lower grid structure. A cutter is also provided on one side of the coating supply assembly.

[0009] Further, as a preference, the support assembly includes a top plate support, the top plate support is connected to the base plate by at least two support arms, a plurality of external seats are embedded in the top plate support, an adjusting cylinder is fixed to the inner side of the external seat, a supporting head is provided at the output end of the adjusting cylinder, and the top plate can be centrally supported by using the supporting head.

[0010] Further, preferably, a buffer spring is provided between the output end of the adjusting cylinder and the supporting head, and a strain gauge is embedded in at least one of the supporting heads for detecting the stress release of the top plate.

[0011] Further, as a preference, an inner seat is fixed in the outer seat, an anchor assembly is arranged in the inner seat, the anchor assembly includes a mounting tube, an anchor rod is slidably arranged in the mounting tube, and the anchor rod can pass through the mounting tube and the outer seat to enter deep into the top plate.

[0012] Further, as a preference, a locking ring seat and a sealing ring are sequentially arranged in the installation tube from top to bottom, wherein the anchor rod seal slides through the sealing ring and can be positioned and locked by the locking ring seat, the bottom of the installation tube is connected to a liquid supply head, the anchor rod is a hollow anchor rod, a piston rod is slidably arranged inside the anchor rod, and a groove is provided on one side of the bottom of the anchor rod.

[0013] Furthermore, as a preference, when the anchor rod is used for anchoring, the fluid supply head supplies fracturing fluid to fracture the deep part of the roof, and then drives the piston rod to move upward for secondary fracturing and resetting, after which the supply head supplies slurry to perform grouting reinforcement on the deep part of the roof, and drives the piston rod to move upward for secondary pressurization, and finally grouting reinforcement is performed again between the piston rod and the anchor rod.

[0014] Compared with the prior art, the present invention provides a support structure for a mine filling tunnel along the goaf, which has the following beneficial effects:

[0015] In the embodiment of the present invention, the use of a film supply assembly and a film collection assembly to deliver the slurry to the top plate can effectively realize the reinforcement of the top plate and reduce the waste of slurry, which is conducive to the smooth progress of construction. In addition, the film can be pressed tightly under the top plate by a pressure roller, and the first movable seat is movably arranged on the first track. Through the movement of the first movable seat, the film can be gradually and comprehensively pressed under the top plate, thereby improving the slurry adhesion effect.

[0016] In the embodiment of the present invention, in the initial stage of support, a support structure can be composed of multiple support heads, top plate supports, support arms and bottom plates to support the top plate. Afterwards, the top plate can be supported by an anchoring assembly, and when anchoring is performed using the anchor rod, the anchor rod is extended into a pre-drilled hole, and then fracturing and grouting are performed, thereby significantly improving the overall anchoring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a roof repair component in a support structure of a mine filling tunnel along the goaf-dig retaining tunnel;

[0018] Figure 2 It is a structural schematic diagram of a support component in a support structure of a mine filling tunnel along the goaf-dig retaining tunnel;

[0019] Figure 3 It is a structural schematic diagram of an anchoring component in a supporting structure of a mine filling tunnel along the goaf-dig retaining tunnel;

[0020] Figure 4 for Figure 1 The left part of the enlarged structural diagram;

[0021] In the figure:

[0022] 100-top plate repair assembly; 110-mounting plate; 120-film supply assembly; 130-film collection assembly; 140-first track; 150-adaptive roller pressing assembly; 160-crushing cleaning assembly;

[0023] 121-screw mechanism; 122-outer cylinder; 123-inner roller; 124-coating head;

[0024] 151-first movable seat; 152-articulated arm; 153-pressing roller; 154-adaptive telescopic member;

[0025] 161-second moving seat; 162-rock breaking head; 163-oscillator; 164-blowing head; 165-swing seat; 166-telescopic rod;

[0026] 200-support assembly; 210-top plate support; 220-support arm; 230-bottom plate; 240-outer seat; 250-anchor assembly; 260-support head; 270-inner seat; 280-buffer spring; 290-adjusting cylinder;

[0027] 251-installation cylinder; 252-anchor rod; 253-sealing ring; 254-locking ring seat; 255-liquid supply head; 256-piston rod. DETAILED DESCRIPTION

[0028] See also Figures 1 to 4 In an embodiment of the present invention, a support structure for a mine filling tunnel along an empty excavation tunnel includes a support assembly 200 for supporting a roof and a roof repair assembly 100 for repairing the roof, wherein the roof is first repaired by the roof repair assembly 100 before the support assembly 200 is used to support the roof, and the roof repair assembly 100 includes at least a film supply assembly 120 and a film collection assembly 130, and the film supply assembly 120 and the film collection assembly 130 jointly retract and release the same film, the film is coated with slurry, and the slurry can be delivered to the roof by using the film.

[0029] It should be noted that in the prior art, when supporting the tunnel roof, the slurry is often sprayed directly onto the roof. The adhesion of the slurry after spraying is general and it is easy to fall, resulting in waste of slurry and being unfavorable for the construction. In this embodiment, the use of a coating supply assembly and a coating collection assembly to deliver the slurry to the roof can effectively achieve the reinforcement of the roof, reduce the waste of slurry, and is conducive to the smooth progress of construction.

[0030] In this embodiment, Figure 4 The film supply assembly 120 and the film collection assembly 130 have the same structure and both include a screw mechanism 121 having a longitudinal driving end, an outer cylinder 122 being fixed on the longitudinal driving end, an inner roller 123 being rotatably arranged in the outer cylinder 122, a film being wound around the inner roller 123, and a coating head 124 being arranged between the outer cylinder 122 and the inner roller 123.

[0031] The screw mechanism includes a screw, a nut, a motor and other mechanisms, which will not be described in detail here.

[0032] A plurality of guide wheels are arranged on the inner side of the outer cylinder 122, and the guide wheels can provide guidance for the lamination;

[0033] The coating head 124 can evenly coat the slurry onto the coating.

[0034] During implementation, the longitudinal driving end of the screw mechanism can drive the outer cylinder to move longitudinally, thereby realizing a movable reinforcement top plate, thereby improving the overall working effect.

[0035] The film supply assembly 120 and the film collection assembly 130 are both disposed on the mounting plate 110;

[0036] In a preferred embodiment, the bottom of the mounting plate 110 has a wheel body.

[0037] As a preferred embodiment, a first track 140 is further provided between the two longitudinal driving ends, and an adaptive rolling assembly 150 is movably provided on the first track 140, and the adaptive rolling assembly 150 includes a first movable seat 151, and an articulated arm 152 is hinged on the first movable seat 151, and an adaptive telescopic member 154 is hinged on the middle part of the articulated arm 152, and the other end of the adaptive telescopic member 154 is hinged to the first movable seat 151, and a pressure roller 153 is also rotatably provided on the articulated arm 152, and the pressure roller 153 abuts against the bottom of the coating.

[0038] The coating can be pressed tightly under the top plate by the pressing roller 153, and the first movable seat 151 is movably arranged on the first track 140. The coating can be gradually and comprehensively pressed tightly under the top plate by the movement of the first movable seat 151, thereby improving the effect of slurry adhesion.

[0039] Furthermore, the first track may be hinged between the two longitudinal drive ends.

[0040] As a preferred embodiment, a second track is further provided between the two longitudinal driving ends, and a crushing and cleaning component 160 is movably provided on the second track. The crushing and cleaning component 160 includes a second movable seat 161, and a plurality of rock breaking heads 162 are slidably provided on the second movable seat 161. The rock breaking heads 162 are driven by an oscillator 163, and the oscillator 163 is fixed on the second movable seat 161. A swing seat 165 is also fixed in the second movable seat 161, and a blowing head 164 is hinged on the swing seat 165, and the blowing head 164 is driven to swing by a telescopic rod 166.

[0041] The rock breaking head 162 can be used to remove the roof with poor integrity and strength, and at the same time, it can be cleaned by a high-intensity blowing head to facilitate the subsequent adhesion of slurry, thereby realizing the reconstruction of part of the roof.

[0042] As a preferred embodiment, the coating is a double-layer structure, which includes an upper elastic film structure and a lower grid structure. There is a certain degree of adhesion between the upper elastic film structure and the lower grid structure. A cutter (not shown) is also provided on one side of the coating supply component 120.

[0043] The upper elastic membrane structure can well cover the slurry and adapt to the top plate, while the lower grid structure can provide better support and maintain the continuity of the coating. That is, the cutter cuts the upper elastic membrane structure, and the coating collection component 130 is used to roll up the lower grid structure.

[0044] In this embodiment, Figure 2 and 3 The support assembly 200 includes a top plate support 210, and the top plate support 210 is connected to the bottom plate 230 by at least two support arms 220. A plurality of outer seats 240 are embedded in the top plate support 210, and an adjusting cylinder 290 is fixed to the inner side of the outer seat 240. A supporting head 260 is provided at the output end of the adjusting cylinder 290, and the supporting head 260 can be used to centrally support the top plate.

[0045] In addition, a buffer spring 280 is provided between the output end of the adjusting cylinder and the supporting head 260, and a strain gauge is embedded in at least one of the supporting heads 260 for detecting the stress release of the top plate.

[0046] When the stress release of the roof is almost complete, an anchoring assembly can be lowered into the roof to provide support for the roof.

[0047] Specifically, an inner seat 270 is fixed in the outer seat 240, and an anchor assembly 250 is arranged in the inner seat 270. The anchor assembly 250 includes a mounting tube 251, and an anchor rod 252 is slidably arranged in the mounting tube 251. The anchor rod 252 can pass through the mounting tube 251 and the outer seat 240 and enter into the deep part of the top plate.

[0048] In addition, a locking ring seat 254 and a sealing ring 253 are sequentially arranged in the installation cylinder 251 from top to bottom, wherein the anchor rod 252 sealingly slides through the sealing ring 253 and can be positioned and locked by the locking ring seat 254, and the bottom of the installation cylinder 251 is connected to a liquid supply head 255, and the anchor rod 252 is a hollow anchor rod, and a piston rod 252 is slidably arranged inside the anchor rod 252, and a groove is provided on one side of the bottom of the anchor rod 252.

[0049] Therefore, when the anchor rod 252 is used for anchoring, the fracturing fluid is supplied by the fluid supply head to fracture the deep part of the top plate, and then the piston rod 256 is driven to move upward for secondary fracturing and reset. Thereafter, the slurry is supplied by the supply head to perform grouting reinforcement on the deep part of the top plate, and the piston rod 256 is driven to move upward for secondary pressurization, and finally grouting reinforcement is performed between the piston rod and the anchor rod.

[0050] That is to say, in this embodiment, in the early stage of support, a support structure can be formed by multiple support heads 260, top plate supports 210, support arms 220 and bottom plates 230 to support the top plate. Afterwards, the top plate can be supported by the anchoring assembly, and when anchoring is performed using the anchor rod 252, the anchor rod is extended into a pre-drilled hole, and then fracturing and grouting are performed, and the overall anchoring effect is significantly improved.

[0051] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A support structure for a mine filling tunnel along the goaf, characterized in that: The invention comprises a supporting assembly for supporting a roof and a roof repair assembly for repairing the roof, wherein the roof is first repaired by the roof repair assembly before the supporting assembly is used to support the roof, and the roof repair assembly at least comprises a film supply assembly and a film collection assembly, the film supply assembly and the film collection assembly are used to collect and release the same film, the film is coated with slurry, and the slurry can be delivered to the roof by using the film; The film supply assembly and the film collection assembly have the same structure, both of which include a screw mechanism, which has a longitudinal drive end, an outer cylinder is fixed on the longitudinal drive end, an inner roller is rotatably arranged in the outer cylinder, a film is wound around the inner roller, and a coating head is also arranged between the outer cylinder and the inner roller; The support assembly includes a top plate support member, which is connected to the bottom plate by at least two support arms, a plurality of outer seats are embedded in the top plate support member, an adjustment cylinder is fixed on the inner side of the outer seat, a support head is provided at the output end of the adjustment cylinder, and the top plate can be centrally supported by the support head; An inner seat is also fixed in the outer seat, and an anchor assembly is arranged in the inner seat, which includes a mounting cylinder, and an anchor rod is slidably arranged in the mounting cylinder, and the anchor rod can pass through the mounting cylinder and the outer seat to enter the deep part of the top plate; A locking ring seat and a plugging ring are sequentially arranged in the installation tube from top to bottom, wherein the anchor rod seal slides through the plugging ring and can be positioned and locked by the locking ring seat, the bottom of the installation tube is connected with a liquid supply head, the anchor rod is a hollow anchor rod, a piston rod is slidably arranged inside the anchor rod, and a notch is provided on one side of the bottom of the anchor rod; When anchoring is performed using an anchor rod, the fluid supply head supplies fracturing fluid to perform fracturing on the deep portion of the roof, and then drives the piston rod upward for secondary fracturing and resetting. Thereafter, the fluid supply head supplies slurry to perform grouting reinforcement on the deep portion of the roof, and drives the piston rod upward for secondary pressurization, and finally performs grouting reinforcement between the piston rod and the anchor rod.

2. A supporting structure for a mine filling tunnel along the goaf-digged tunnel according to claim 1, characterized in that: A first track is also provided between the two longitudinal driving ends, and an adaptive rolling assembly is movably provided on the first track. The adaptive rolling assembly includes a first movable seat, an articulated arm is hinged on the first movable seat, an adaptive telescopic part is hinged on the middle part of the articulated arm, and the other end of the adaptive telescopic part is hinged to the first movable seat. A pressure roller is also rotatably provided on the articulated arm, and the pressure roller abuts against the bottom of the coating.

3. A supporting structure for a mine filling tunnel along the goaf-digged tunnel according to claim 2, characterized in that: A second track is also arranged between the two longitudinal driving ends, and a crushing and cleaning component is movably arranged on the second track. The crushing and cleaning component includes a second moving seat, and a plurality of rock breaking heads are slidably arranged on the second moving seat. The rock breaking heads are driven by an oscillator, and the oscillator is fixed on the second moving seat. A swing seat is also fixed in the second moving seat, and a blowing head is hinged on the swing seat. The blowing head is driven to swing by a telescopic rod.

4. A supporting structure for a mine filling tunnel along the goaf-digged tunnel according to claim 1, characterized in that: The coating is a double-layer structure, which includes an upper elastic film structure and a lower grid structure. There is a certain degree of adhesion between the upper elastic film structure and the lower grid structure. A cutter is also provided on one side of the coating supply component.

5. The supporting structure of a mine filling tunnel along the goaf-dig retaining tunnel according to claim 1 is characterized by: A buffer spring is also arranged between the output end of the adjusting cylinder and the supporting head, and a strain gauge is embedded in at least one supporting head for detecting the stress release of the top plate.

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