A convenient support and backfill structure for mine subsidence areas

Abstract

This utility model relates to the field of mine geological disaster management and ecological restoration technology, specifically a convenient support and backfill structure for mine subsidence areas. It includes a soil body, with a composite geomembrane laid at the subsidence pit to isolate the broken rock and soil. A support frame assembly for stabilizing the soil body is installed on the inner side of the composite geomembrane. Once deployed and locked, this support frame assembly forms a stable "U"-shaped support space consisting of a base and two vertical support plates. Backfilling can then be carried out within this space and outside the support plates. The vertical load is mainly borne by the base and the composite geomembrane beneath it, while the lateral earth pressure is borne by the two locked vertical support plates and effectively dispersed to the surrounding undisturbed soil through positioning piles. The rotational force is converted into the unfolding power of the support plates through a connecting rod and slider structure, and mechanical self-locking is achieved using screws.

Description

Technical Field

[0001] This utility model relates to the field of mine geological disaster management and ecological restoration technology, specifically a convenient support and backfill structure for mine subsidence areas. Background Technology

[0002] Underground voids formed after mining operations can easily lead to surface subsidence and the formation of sinkholes. These sinkholes not only damage the ecological environment and occupy land resources, but also pose a serious threat to the safety of personnel and equipment in the mining area.

[0003] Currently, the treatment of mine subsidence areas typically employs either direct backfilling or a support-then-backfilling method. Direct backfilling involves directly filling the subsidence pit with backfill materials such as soil, rock, and slag. However, for unstable and continuously developing subsidence areas, the backfill materials may sink, resulting in an unsustainable treatment effect. The support-then-backfilling method requires constructing complex reinforced concrete support structures or driving dense pile foundations within the subsidence area. However, this method suffers from problems such as long construction cycles, high costs, stringent site requirements, and poor flexibility. Therefore, a convenient support and backfilling structure for mine subsidence areas is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a convenient support and backfill structure for mine subsidence areas to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a convenient support and backfill structure for mine subsidence areas, comprising soil, wherein a composite geomembrane for isolating rubble soil is laid at the subsidence pit of the soil, and a support frame assembly for stabilizing the soil is provided on the inner side of the composite geomembrane. The support frame assembly includes a base, two support plates, and multiple positioning piles. The base is located inside the composite geomembrane and is used to house the two support plates in their folded state. The two support plates in their unfolded state cooperate with the base to support the subsidence pit of the soil. The positioning piles are used to be inserted into the soil of the soil body.

[0006] Preferably, the support plate is hinged to the inner side of the base, and the positioning pile is disposed on the outer side of the support plate.

[0007] Preferably, the support frame assembly further includes two sets of fixed rods, connecting rods, sleeves, and two rotating rods; The rotating rod is rotatably connected to the base, the connecting rod is fixedly connected to the outer wall of the rotating rod, the fixing rod is fixedly connected to the inner side of the support plate, and the sleeve is slidably connected to the outer wall of the fixing rod.

[0008] Preferably, the connecting rod is rotatably connected to the surface of the sleeve, and the rotating rod in the rotating state is used to drive the connecting rod to swing.

[0009] Preferably, the connecting rod in the swing state is used to drive the sleeve to slide along the trajectory of the outer wall of the fixed rod, and the support plate in the unfolded state is arranged perpendicularly to the base.

[0010] Preferably, the handle of the rotating rod is provided with a screw, and the surface of the base is provided with a screw hole for bolting the screw.

[0011] Preferably, the screw in the installed state is used to lock the position of the support plate, and the end of the positioning pile has a conical structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the composite geomembrane is used to isolate the unstable crushed rock and soil in the pit from the subsequent backfill material, prevent the loss of fine particles, and play a certain seepage prevention role. Then the support frame assembly in the folded storage state is transported to the site and placed on the composite geomembrane. Once deployed and locked, this support frame assembly forms a stable "U"-shaped support space consisting of a base and two vertical support plates. Backfilling can then be carried out within this space and on the outside of the support plates. The vertical load is mainly borne by the base and the composite geomembrane beneath it, while the lateral earth pressure is borne by the two locked vertical support plates and effectively distributed to the surrounding undisturbed soil through positioning piles. The rotational force is converted into the deployment power of the support plates through the connecting rod and slider structure, and mechanical self-locking is achieved using screws. This completes all steps from deployment to deployment and locking, achieving convenient, modular, and rapid construction of the support structure compared to traditional structures. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the present utility model; Figure 2 This is a schematic diagram of the composite geomembrane structure of this utility model; Figure 3 This is a schematic diagram of the support frame assembly structure of this utility model; Figure 4 This utility model Figure 3 A schematic diagram of structure A in the diagram.

[0014] In the diagram: 1. Soil; 2. Composite geomembrane; 3. Support frame assembly; 301. Base; 302. Support plate; 303. Fixing rod; 304. Positioning pile; 305. Rotating rod; 306. Connecting rod; 307. Sleeve; 4. Screw. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4 This utility model provides a convenient support and backfilling structure technical solution for mine subsidence areas: a convenient support and backfilling structure for mine subsidence areas, including soil 1, a composite geomembrane 2 for isolating broken rock and soil is laid at the subsidence pit of soil 1, and a support frame assembly 3 for stabilizing support of soil 1 is provided on the inner side of the composite geomembrane 2. The support frame assembly 3 includes a base 301, two support plates 302, and multiple positioning piles 304. The base 301 is located inside the composite geomembrane 2 and is used to house the two support plates 302 in the folded state. The two support plates 302 in the unfolded state cooperate with the base 301 to support the collapse pit of the soil 1. The positioning piles 304 are used to be inserted into the soil of the soil 1.

[0017] Please refer to this carefully. Figure 3 The support plate 302 is hinged to the inner side of the base 301, and the positioning pile 304 is set on the outer side of the support plate 302.

[0018] In this embodiment: as the support plate 302 unfolds and locks, the positioning pile 304 set on its outer side is also inserted into the side wall of the collapse pit of the soil 1. Since the end of the positioning pile 304 is designed as a cone structure, the end resistance when inserted into the soil is reduced, making it easier to penetrate into the soil 1 and achieve rapid anchoring.

[0019] Please refer to this carefully. Figure 3 The support frame assembly 3 also includes two sets of fixed rods 303, connecting rods 306, sleeves 307 and two rotating rods 305; The rotating rod 305 is rotatably connected to the base 301, the connecting rod 306 is fixedly connected to the outer wall of the rotating rod 305, the fixed rod 303 is fixedly connected to the inner side of the support plate 302, and the sleeve 307 is slidably connected to the outer wall of the fixed rod 303.

[0020] In this embodiment: After the support frame assembly 3 is deployed and locked, a stable "U"-shaped support space is formed by the base 301 and two vertical support plates 302. Then, the backfill layer (backfill material such as soil, rock, slag, etc.) can be constructed in this space and on the outside of the support plate 302.

[0021] Please refer to this carefully. Figure 3The connecting rod 306 is rotatably connected to the surface of the sleeve 307, and the rotating rod 305 in the rotating state is used to drive the connecting rod 306 to swing.

[0022] In this embodiment: when the connecting rod 306 swings, it pushes or pulls the sleeve 307, forcing the sleeve 307 to slide along the axis of the fixed rod 303. The sliding of the sleeve 307 on the fixed rod 303 generates a thrust or pull force acting on the support plate 302. Since the bottom of the support plate 302 is connected to the base 301 by a hinge, this force is converted into a torque that causes the support plate 302 to rotate about its hinge point.

[0023] Please refer to this carefully. Figure 3 The swinging link 306 is used to drive the sleeve 307 to slide along the outer wall trajectory of the fixed rod 303, and the extended support plate 302 is perpendicular to the base 301.

[0024] In this embodiment: the connecting rod 306 pushes the sleeve 307 to gradually lift the support plate 302, which was originally placed flat in the base 301, so that it unfolds from a horizontal storage state to an upright working state perpendicular to the base 301.

[0025] Please refer to this carefully. Figure 4 The handle of the rotating rod 305 is provided with a screw 4, and the surface of the base 301 is provided with a screw hole for bolting the screw 4.

[0026] In this embodiment: after the support plate 302 is fully extended to the vertical position, the screw 4 set at the handle of the rotating rod 305 is tightened so that it is screwed into the pre-set screw hole on the surface of the base 301, thereby locking the position of the support plate 302 with the screw 4 in the tightened state.

[0027] Please refer to this carefully. Figure 3 The screw 4 in the installed state is used to lock the position of the support plate 302, and the end of the positioning pile 304 has a conical structure.

[0028] In this embodiment: after the screw 4 is tightened, a strong frictional force is generated, which effectively restricts any rotational tendency of the rotating rod 305. Since the rotating rod 305, connecting rod 306, sleeve 307 and fixing rod 303 together constitute a self-locking structure, locking the rotating rod 305 is equivalent to locking the entire transmission chain, thereby ensuring that the support plate 302 will not easily retract when subjected to external force, and maintaining the stability of the support state.

[0029] Working principle: First, the subsidence pit of soil 1 is initially cleaned and leveled. Then, composite geomembrane 2 is laid at the bottom and side walls of the subsidence pit of soil 1. Composite geomembrane 2 isolates the unstable crushed rock and soil in the pit from the subsequent backfill material, prevents the loss of fine particles, and plays a certain role in seepage prevention. Then, the support frame assembly 3, which is in a folded and stored state, is transported to the site and placed on the composite geomembrane 2. At this time, the two support plates 302 are folded into the inside of the base 301. The whole assembly is small in size, easy to transport and place, and is especially suitable for use in sites where large machinery cannot enter. The construction worker rotates the rotating rod 305. The rotating rod 305, in its rotating state, causes the connecting rod 306, fixed to its outer wall, to swing. When the connecting rod 306 swings, it pushes or pulls the sleeve 307, forcing the sleeve 307 to slide along the axis of the fixed rod 303. The sliding of the sleeve 307 on the fixed rod 303 generates a thrust or pull force acting on the support plate 302. Since the bottom of the support plate 302 is connected to the base 301 by a hinge, this force is converted into a torque that causes the support plate 302 to rotate about its hinge point, thereby affecting the connecting rod. 306 pushes the sleeve 307 to gradually lift the support plate 302, which was originally flat in the base 301, so that it unfolds from a horizontal storage state to an upright working state perpendicular to the base 301. When the support plate 302 is fully unfolded to the vertical position, tighten the screw 4 set at the handle of the rotating rod 305 so that it is screwed into the pre-set screw hole on the surface of the base 301. The tightened screw 4 locks the position of the support plate 302, thereby ensuring that the support plate 302 will not easily retract when subjected to external force, and maintaining the stability of the support state. As the support plate 302 unfolds and locks, the positioning piles 304 set on its outer side are also inserted into the side wall of the collapse pit of the soil 1. Since the end of the positioning pile 304 is designed as a conical structure, the end resistance when inserted into the soil is reduced, making it easier to penetrate into the soil 1 and achieve rapid anchoring. This tightly connects the entire support frame assembly 3 with the surrounding soil 1, enhances the overturning and sliding resistance of the support structure, and ensures overall stability.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A convenient support and backfill structure for mine subsidence areas, comprising soil (1), characterized in that: A composite geomembrane (2) for isolating the crushed rock and soil is laid at the collapse pit of the soil (1), and a support frame assembly (3) for stabilizing the soil (1) is provided on the inner side of the composite geomembrane (2). The support frame assembly (3) includes a base (301), two support plates (302), and multiple positioning piles (304). The base (301) is located inside the composite geomembrane (2) and is used to house the two support plates (302) in the folded state. The two support plates (302) in the unfolded state cooperate with the base (301) to support the collapse pit of the soil (1). The positioning piles (304) are used to be inserted into the soil of the soil (1).

2. The convenient support and backfill structure for mine subsidence areas according to claim 1, characterized in that: The support plate (302) is hinged to the inner side of the base (301), and the positioning pile (304) is disposed on the outer side of the support plate (302).

3. The convenient support and backfill structure for mine subsidence areas according to claim 1, characterized in that: The support frame assembly (3) also includes two sets of fixed rods (303), connecting rods (306), sleeves (307) and two rotating rods (305). The rotating rod (305) is rotatably connected to the base (301), the connecting rod (306) is fixedly connected to the outer wall of the rotating rod (305), the fixing rod (303) is fixedly connected to the inner side of the support plate (302), and the sleeve (307) is slidably connected to the outer wall of the fixing rod (303).

4. A convenient support and backfill structure for mine subsidence areas according to claim 3, characterized in that: The connecting rod (306) is rotatably connected to the surface of the sleeve (307), and the rotating rod (305) in the rotating state is used to drive the connecting rod (306) to swing.

5. A convenient support and backfill structure for mine subsidence areas according to claim 3, characterized in that: The connecting rod (306) in the swing state is used to drive the sleeve (307) to slide along the outer wall trajectory of the fixed rod (303), and the support plate (302) in the unfolded state is vertically arranged with the base (301).

6. A convenient support and backfill structure for mine subsidence areas according to claim 3, characterized in that: The handle of the rotating rod (305) is provided with a screw (4), and the surface of the base (301) is provided with a screw hole for bolting the screw (4).

7. A convenient support and backfill structure for mine subsidence areas according to claim 6, characterized in that: The screw (4) in the installed state is used to lock the position of the support plate (302), and the end of the positioning pile (304) is conical.

Images