Cable-type filling retaining wall and construction method

Abstract

This invention relates to a cable-stayed infill retaining wall and its construction method, comprising a support frame, auxiliary reinforcement components, and an adjustment assembly arranged sequentially from back to front. The support frame includes vertical struts and horizontal struts, with two vertical struts spaced apart on the left and right sides. The upper and lower ends of the two vertical struts are connected by a horizontal strut, and the two vertical struts are connected by several horizontal steel pipes evenly distributed from top to bottom. The auxiliary reinforcement components include staggered vertical and horizontal bars, with the ends of the vertical and horizontal bars located outside the support frame. The support frame is embedded in the rock mass, and the ends of the vertical and horizontal bars are inserted into the rock mass. The adjustment assembly includes a base and four telescopic rods evenly distributed around the outer circumference of the base. The outer ends of the four telescopic rods are respectively hinged to the connection nodes of the vertical and horizontal struts at the four corners of the support frame, and the inner ends of the telescopic rods are hinged to the base. The base is welded to the connection nodes of the vertical and horizontal bars. This design has a simple structure, is convenient to construct, has a short installation time, strong bending resistance, and high reusability.

Description

Technical Field

[0001] The invention relates to a cable-type filling retaining wall and a construction method. Background Art

[0002] In recent years, as mining has developed deeper, backfill mining has been favored by more and more mines due to its advantages such as high recovery rate and safe operation. Backfill retaining wall plays an important role in backfill mining, because the force of backfill retaining wall not only comes from the pressure of backfill material, but also is related to factors such as blasting in the mining area, extrusion of slurry filtration and penetration of backfill material. At the same time, its strength requirements and structural design are closely related to the on-site backfilling process, production capacity and quality after backfilling. Accidental leakage of backfill slurry often occurs at the mine site, and there are also safety hazards when the backfilling area is too large. Therefore, the construction of backfill retaining wall is one of the indispensable processes of backfill mining, and the quality of retaining wall construction is related to the safety and efficiency of backfilling work.

[0003] During the filling process, the filling retaining wall is used as a protective structure to prevent leakage and slurry running in the filling area. The survey found that the filling retaining wall currently exists in four different structural forms, mainly wooden retaining walls, brick retaining walls, stacked retaining walls and concrete retaining walls. Each type of retaining wall has its own characteristics: wooden retaining walls have good water permeability and low cost, but they can withstand low pressure, and the small contact surface with the tunnel wall is prone to slurry running and leakage; brick retaining walls are simple to process and have better effects than wooden retaining walls, but their transportation costs are relatively high; stacked retaining walls are more suitable for layered filling in the mining area; concrete retaining walls are complex to construct and have strong compressive resistance, and are suitable for large filling areas with high safety requirements. However, the current filling retaining walls often have high labor intensity, poor bending resistance, long installation time, and low reuse rate. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a cable-type filling retaining wall and a construction method thereof.

[0005] The solution adopted by the present invention to solve the technical problem is a cable-type filling retaining wall, comprising a support frame, an auxiliary reinforcement member, and an adjustment component arranged in sequence from the back to the front;

[0006] The support frame includes a vertical support rod and a horizontal support rod. Two vertical support rods are arranged at intervals on the left and right. The upper and lower ends of the two vertical support rods are respectively connected by a horizontal support rod. The two vertical support rods are connected by a plurality of retaining wall horizontal steel pipes evenly distributed from top to bottom.

[0007] The auxiliary reinforcement member includes staggered vertical bars and horizontal bars, the ends of the vertical bars and horizontal bars are located outside the support frame, the support frame is embedded in the rock body, and the ends of the vertical bars and horizontal bars are inserted into the rock body;

[0008] The adjustment component includes a base, four telescopic rods evenly distributed on the outer circumference of the base, the outer ends of the four telescopic rods are respectively hinged to the connection nodes of the vertical support rods and the horizontal support rods at the four corners of the support frame, the inner ends of the telescopic rods are hinged to the base, and the base is welded to the connection nodes of the vertical rods and the horizontal rods.

[0009] Furthermore, the telescopic rod is connected to the base via a rotating part, and the rotating part includes a shell welded on the peripheral side of the base, an adjusting shaft and a turntable installed in the shell, the adjusting shaft is perpendicular to the turntable, and the adjusting shaft and the turntable are rotatably connected to the shell, a bevel gear portion is provided on the inner outer ring of the turntable, a bevel gear meshing with the bevel gear portion is installed on the inner end of the adjusting shaft, the outer end of the adjusting shaft passes through the shell, an adjusting groove is provided in the middle of the outer end surface of the adjusting shaft, two connecting ears are symmetrically provided on the outer side of the turntable, the inner end of the telescopic rod is located between the two connecting ears, and the inner end of the telescopic rod is hinged to the two connecting ears via a pinion.

[0010] Furthermore, the telescopic rod includes a rod body A and a rod body B whose inner end is sleeved in the rod body A. The rod body A and the rod body B are threadedly matched. The rod body A and the rod body B are locked by a locker. The fixed end of the locker is installed on the inner end of the rod body A, and the movable end of the locker is sleeved on the rod body B. The outer end of the rod body B is connected to the turntable, and the outer end of the rod body A is connected to the support frame.

[0011] Furthermore, the rear sides of the vertical support rods and the horizontal support rods are provided with rock protrusions for embedding.

[0012] Furthermore, a plurality of transverse insertion holes are provided on the vertical support rods at intervals from top to bottom, and the ends of the transverse steel pipes of the retaining wall are inserted into the transverse insertion holes and connected to the vertical support rods via pins.

[0013] Furthermore, a steel mesh and a water-filtration geotextile are installed on the rear side of the support frame in sequence from the back to the front.

[0014] A construction method for a cable-type filling retaining wall comprises the following steps:

[0015] (1) The telescopic rod is adjusted to the required length according to the conditions required by the mine, and the telescopic rod is locked by the locking device;

[0016] (2) Connect the four telescopic rods, one end of which is connected to the base via a connector, and the other end is not processed accordingly;

[0017] (3) Use an air-leg drilling rig with a straight drill bit to drill four holes in the center of the sides and roof and floor of the tunnel, and dig grooves on the rock mass of the sides and roof and floor of the tunnel;

[0018] (4) Install the support frame, lay out the vertical support rods along the width direction of the tunnel, insert the convex part of the vertical support rods into the grooves dug in the rock mass, and then install the horizontal support rods, insert the convex part of the horizontal support rods into the grooves dug, and hinge the vertical support rods and the horizontal support rods;

[0019] (5) Install the vertical rods and horizontal rods. Insert the two ends of the vertical rods into the pre-drilled holes on the top and bottom plates, and insert the two ends of the horizontal rods into the pre-drilled holes on both sides of the access road to form a fixed constraint.

[0020] (6) Install the horizontal steel pipe of the retaining wall in the support frame. Connect the ends of the horizontal steel pipe of the retaining wall to the vertical support rods through pins;

[0021] (7) After the steel pipe is installed, the adjustment assembly is welded to the connection node of the vertical rod and the horizontal rod, and then the other end of the telescopic rod that has not been processed in step (2) is compositely hinged to the connection node of the vertical rod and the horizontal rod;

[0022] (8) Loosen the locker, and then use a tightening wrench to rotate the adjustment shaft through the adjustment slot, so that the turntable drives the rod body B to rotate, thereby extending or shortening the telescopic rod to the length required for the filling work, and tighten the locker to achieve the final stability of the filling retaining wall.

[0023] Furthermore, in step (6), for filling mines with higher requirements, steel mesh and water-filtration geotextile are installed inside the steel pipe of the filling retaining wall to maximize the benefits of the filling retaining wall.

[0024] Compared with the prior art, the present invention has the following beneficial effects: simple structure, convenient construction, short installation time, strong bending resistance and high reuse rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings.

[0026] Figure 1 This is a structural diagram of the retaining wall;

[0027] Figure 2 It is a schematic diagram of the structure of the regulating component;

[0028] Figure 3 It is a structural schematic diagram of the telescopic rod.

[0029] In the figure: 1- horizontal support rod; 2- vertical support rod; 3- telescopic rod; 301- rod body A; 302- rod body B; 4- horizontal rod; 5- vertical rod; 6- base; 7- rotating part; 701- housing; 702- adjusting shaft; 703- turntable; 704- bevel gear; 705- bevel gear part; 706- connecting ear; 8- horizontal steel pipe of retaining wall; 9- locking device; 901- fixed end; 902- movable end; 10- rock mass; 11- connecting node; 12- access road. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] like Figure 1-3As shown, a cable-type filling retaining wall includes a support frame, an auxiliary reinforcement member, and an adjustment component arranged in sequence from the back to the front;

[0032] The support frame includes a vertical support rod 2 and a horizontal support rod 1. Two vertical support rods are arranged at intervals on the left and right. The upper and lower ends of the two vertical support rods are connected by a horizontal support rod respectively. The two vertical support rods are connected by a plurality of retaining wall horizontal steel pipes 8 evenly distributed from top to bottom.

[0033] The auxiliary reinforcement member includes staggered vertical bars 5 and horizontal bars 4, the ends of which are located outside the support frame, the support frame is embedded in the rock mass 10, and the ends of the vertical bars and horizontal bars are inserted into the rock mass;

[0034] The adjustment assembly includes a base 6, four telescopic rods 3 evenly distributed on the periphery of the base, the outer ends of the four telescopic rods are respectively hinged to the connection nodes 11 of the vertical support rods and the horizontal support rods at the four corners of the support frame, the inner ends of the telescopic rods are hinged to the base, and the base is welded to the connection nodes of the vertical rods and the horizontal rods.

[0035] In this embodiment, the telescopic rod is connected to the base via a rotating member 7, and the rotating member includes a shell 701 welded on the peripheral side of the base, an adjusting shaft 702 and a turntable 703 installed in the shell, the adjusting shaft is perpendicular to the turntable, and the adjusting shaft and the turntable are rotatably connected to the shell, a bevel gear portion 705 is provided on the inner peripheral ring of the inner side of the turntable, and a bevel gear 704 meshing with the bevel gear portion is installed on the inner end of the adjusting shaft, the outer end of the adjusting shaft passes through the shell, and an adjusting groove is provided in the middle of the outer end surface of the adjusting shaft, and two connecting ears 706 are symmetrically provided on the outer side of the turntable, the inner end of the telescopic rod is located between the two connecting ears, and the inner end of the telescopic rod is hinged to the two connecting ears via a pinion.

[0036] In this embodiment, the telescopic rod includes a rod body A301, a rod body B302 whose inner end is sleeved in the rod body A, the rod body A and the rod body B are threadedly matched, the rod bodies A and B are locked by a locker 9, the fixed end 901 of the locker is installed on the inner end of the rod body A, the movable end 902 of the locker is sleeved on the rod body B, the outer end of the rod body B is connected to the turntable, and the outer end of the rod body A is connected to the support frame. The locker uses an existing locker for telescopic rods, such as the locker disclosed in the application number 201610880636.9. Of course, the locking member can also use a screw.

[0037] In this embodiment, the rear sides of the vertical support rods and the horizontal support rods are provided with rock protrusions for embedding.

[0038] In this embodiment, a plurality of transverse insertion holes are provided on the vertical support rods at intervals from top to bottom, and the ends of the transverse steel pipes of the retaining wall are inserted into the transverse insertion holes and connected to the vertical support rods via pins.

[0039] In this embodiment, a steel mesh and a water-filtration geotextile are installed on the rear side of the support frame in sequence from the back to the front.

[0040] A construction method for a cable-type filling retaining wall comprises the following steps:

[0041] (1) The telescopic rod is adjusted to the required length according to the conditions required by the mine, and the telescopic rod is locked by the locking device;

[0042] (2) Connect the four telescopic rods, one end of which is connected to the base via a connector, and the other end is not processed accordingly;

[0043] (3) Use an air-leg drilling rig with a straight drill bit to drill four holes in the center of the sides and roof and floor of the tunnel, and dig grooves on the rock mass of the sides and roof and floor of the tunnel;

[0044] (4) Install the support frame, lay out the vertical support rods along the width direction of the tunnel, insert the convex part of the vertical support rods into the grooves dug in the rock mass, and then install the horizontal support rods, insert the convex part of the horizontal support rods into the grooves dug, and hinge the vertical support rods and the horizontal support rods;

[0045] (5) Install the vertical rods and horizontal rods. Insert the two ends of the vertical rods into the pre-drilled holes of the top and bottom plates, and insert the two ends of the horizontal rods into the pre-drilled holes on both sides of the access 12 to form a fixed constraint;

[0046] (6) Install the horizontal steel pipe of the retaining wall in the support frame. Connect the ends of the horizontal steel pipe of the retaining wall to the vertical support rods through pins;

[0047] (7) After the steel pipe is installed, the adjustment assembly is welded to the connection node of the vertical rod and the horizontal rod, and then the other end of the telescopic rod that has not been processed in step (2) is compositely hinged to the connection node of the vertical rod and the horizontal rod;

[0048] (8) Loosen the locker, and then use a tightening wrench to rotate the adjustment shaft through the adjustment slot, so that the turntable drives the rod body B to rotate, thereby extending or shortening the telescopic rod to the length required for the filling work, and tighten the locker to achieve the final stability of the filling retaining wall.

[0049] In this embodiment, in step (6), for filling mines with higher requirements, steel mesh and water-filtration geotextile are installed inside the steel pipe of the filling retaining wall to maximize the benefits of the filling retaining wall.

[0050] If this patent discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (such as connection using bolts or screws), or as: a non-detachable fixed connection (such as riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (such as one-piece manufacturing using a casting process) (except where it is obviously impossible to use an integrated molding process).

[0051] In the description of this patent, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0052] The preferred embodiments listed above further illustrate the objectives, technical solutions and advantages of the present invention in detail. It should be understood that 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable-type filling retaining wall, characterized in that: It includes a support frame, an auxiliary reinforcement member, and an adjustment component which are arranged in sequence from the back to the front; The support frame includes a vertical support rod and a horizontal support rod. Two vertical support rods are arranged at intervals on the left and right. The upper and lower ends of the two vertical support rods are respectively connected by a horizontal support rod. The two vertical support rods are connected by a plurality of retaining wall horizontal steel pipes evenly distributed from top to bottom. The auxiliary reinforcement member includes staggered vertical bars and horizontal bars, the ends of the vertical bars and horizontal bars are located outside the support frame, the support frame is embedded in the rock body, and the ends of the vertical bars and horizontal bars are inserted into the rock body; The adjustment assembly includes a base, four telescopic rods evenly distributed on the periphery of the base, the outer ends of the four telescopic rods are respectively hinged to the connection nodes of the vertical support rods and the horizontal support rods at the four corners of the support frame, the inner ends of the telescopic rods are hinged to the base, and the base is welded to the connection nodes of the vertical rods and the horizontal rods; The telescopic rod is connected to the base via a rotating member, and the rotating member includes a shell welded on the peripheral side of the base, an adjusting shaft and a turntable installed in the shell, the adjusting shaft is perpendicular to the turntable, the adjusting shaft and the turntable are both rotatably connected to the shell, a bevel gear portion is provided on the inner peripheral ring of the inner side of the turntable, a bevel gear meshing with the bevel gear portion is installed on the inner end of the adjusting shaft, the outer end of the adjusting shaft passes through the shell, an adjusting groove is provided in the middle of the outer end surface of the adjusting shaft, two connecting ears are symmetrically provided on the outer side surface of the turntable, the inner end of the telescopic rod is located between the two connecting ears, and the inner end of the telescopic rod is hinged to the two connecting ears via a pinion shaft; The telescopic rod comprises a rod body A, a rod body B with an inner end sleeved in the rod body A, the rod body A and the rod body B are threadedly matched, the rod body A and the rod body B are locked by a locker, the fixed end of the locker is installed at the inner end of the rod body A, the movable end of the locker is sleeved on the rod body B, the outer end of the rod body B is connected to the turntable, and the outer end of the rod body A is connected to the support frame; Construction method of cable-type filling retaining wall: (1) The telescopic rod is adjusted to the required length according to the conditions required by the mine, and the telescopic rod is locked by the locking device; (2) Connect the four telescopic rods, one end of which is connected to the base via a connector, and the other end is not processed accordingly; (3) Use an air-leg drilling rig with a straight drill bit to drill four holes in the center of the sides and roof and floor of the tunnel, and dig grooves on the rock mass of the sides and roof and floor of the tunnel; (4) Install the support frame, lay out the vertical support rods along the width direction of the tunnel, insert the convex part of the vertical support rods into the grooves dug in the rock mass, and then install the horizontal support rods, insert the convex part of the horizontal support rods into the grooves dug, and hinge the vertical support rods and the horizontal support rods; (5) Install the vertical bars and horizontal bars. Insert the two ends of the vertical bars into the pre-drilled holes on the top and bottom plates, and insert the two ends of the horizontal bars into the pre-drilled holes on both sides of the access road to form a fixed constraint. (6) Install the horizontal steel pipe of the retaining wall in the support frame. Connect the ends of the horizontal steel pipe of the retaining wall to the vertical support rods through pins; (7) After the steel pipe is installed, the adjustment assembly is welded to the connection node of the vertical rod and the horizontal rod, and then the other end of the telescopic rod that has not been processed in step (2) is compositely hinged to the connection node of the vertical rod and the horizontal rod; (8) Loosen the locker, and then use a tightening wrench to rotate the adjustment shaft through the adjustment slot, so that the turntable drives the rod body B to rotate, thereby extending or shortening the telescopic rod to the length required for the filling work, and tighten the locker to achieve the final stability of the filling retaining wall.

2. The cable-type filling retaining wall according to claim 1 is characterized in that: The rear sides of the vertical support rods and the horizontal support rods are provided with rock protrusions for embedding.

3. The cable-type filling retaining wall according to claim 1 is characterized in that: A plurality of transverse insertion holes are arranged on the vertical support rod from top to bottom at intervals, and the ends of the transverse steel pipes of the retaining wall are inserted into the transverse insertion holes and connected with the vertical support rods through pins.

4. The cable-type filling retaining wall according to claim 1 is characterized in that: The rear side surface of the support frame is sequentially installed with a steel mesh and a water-filtering geotextile from the back to the front.

5. The cable-type filling retaining wall according to claim 1, characterized in that: In step (6), for filling mines with higher requirements, steel mesh and water-filtration geotextile are installed on the inner side of the steel pipe of the filling retaining wall.

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