A surrounding rock stability supporting device after blasting of an underground phosphate mine

Abstract

The utility model belongs to the field of surrounding rock support technology, especially relates to a kind of underground phosphorite mine post-blasting surrounding rock stable support device.A kind of underground phosphorite mine post-blasting surrounding rock stable support device, including the support structure being arranged in roadway surrounding rock, the support structure includes support frame, multiple connecting grooves are set up on the support frame, threaded hole is set up in the connecting groove, two mounting plates are fixedly installed in the bottom inboard of the support frame, hydraulic cylinder is fixedly installed on the mounting plate, support seat is fixedly installed on the output shaft of the hydraulic cylinder, guide slot is set up on the support frame.The underground phosphorite mine post-blasting surrounding rock stable support device provided by the utility model can adapt to the dynamic change of surrounding rock after blasting, has high overall bearing capacity, has the advantages of surface and deep protection and good corrosion resistance.

Description

Technical Field

[0001] This utility model belongs to the field of surrounding rock support technology, and in particular relates to a device for stabilizing surrounding rock after blasting in underground phosphate mines. Background Technology

[0002] During blasting operations in underground phosphate mines, the energy of explosives can cause a violent impact on the surrounding rock mass, disrupting the original stress balance of the tunnel's surrounding rock and often resulting in problems such as fissure development, loose rock structure, and localized spalling. If support is not provided in a timely manner or the support devices are not adaptable enough, it can easily lead to safety accidents such as rock instability and collapse.

[0003] Existing support devices often have the following shortcomings: traditional rigid supports are difficult to adapt to the dynamic deformation of the surrounding rock after blasting and are prone to fracture due to local stress concentration; the connections between support structures are loose, the overall bearing capacity is weak, and it is difficult to disperse the load of the surrounding rock; surface protection and deep support are disconnected, and it is impossible to meet the needs of preventing spalling and resisting deep pressure at the same time.

[0004] Therefore, it is necessary to provide a new device for stabilizing the surrounding rock after blasting in underground phosphate mines to solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a stable support device for the surrounding rock after blasting in underground phosphate mines that can adapt to the dynamic changes of the surrounding rock after blasting, has a strong overall bearing capacity, provides both surface and deep protection, and has good corrosion resistance.

[0006] To solve the above-mentioned technical problems, the present invention provides a stabilization support device for the surrounding rock after blasting in an underground phosphate mine, comprising a support structure installed in the surrounding rock of the roadway. The support structure includes a support frame, on which multiple connecting grooves are provided, and threaded holes are provided in the connecting grooves. Two mounting plates are fixedly installed on the inner bottom side of the support frame, and hydraulic cylinders are fixedly installed on the mounting plates. A support seat is fixedly installed on the output shaft of the hydraulic cylinders, and a guide groove is provided on the support frame.

[0007] Multiple connecting crossbars are provided between two adjacent support structures. Bolts are installed at both ends of each connecting crossbar, and the bolts are threaded into threaded holes. The connecting crossbars are fixed in the connecting groove by bolts.

[0008] As a further embodiment of this utility model, a metal mesh is laid on the surface of the surrounding rock of the tunnel, and the metal mesh is fixed to the surface of the surrounding rock of the tunnel by multiple anchor rods.

[0009] As a further embodiment of this utility model, two conical spikes are fixedly installed at the bottom of the support base.

[0010] As a further embodiment of this utility model, two side plates are fixedly installed on the top of the support base, and a sliding rod is fixedly installed between the two side plates. The sliding rod passes through the guide groove and is slidably connected to the guide groove.

[0011] As a further embodiment of this utility model, the support frame is a "U" shaped structure, the shape of which is adapted to the surrounding rock of the tunnel, and is made of high-strength alloy steel.

[0012] As a further embodiment of this utility model, the surface of the support structure, connecting crossbar and metal mesh is provided with an anti-corrosion coating.

[0013] Compared with related technologies, the underground phosphate mine blasting surrounding rock stabilization support device provided by this utility model has the following beneficial effects:

[0014] 1. This utility model, by setting up a hydraulic cylinder and a support base, can provide a stable and adjustable driving force, push the support base to fit tightly against the surface of the surrounding rock, and ensure that the supporting force can be accurately applied to the area that needs to be reinforced;

[0015] 2. This utility model connects adjacent support structures into a whole by connecting crossbars, and with the structural design of the "U"-shaped support frame, a continuous and stable support system is formed, which effectively disperses the surrounding rock load and reduces the risk of single-point failure.

[0016] 3. This utility model sets up a surface protection structure composed of metal mesh and anchor rods, which together with the support structure form a "surface-deep" double support, which can not only prevent the surface of the surrounding rock from peeling off, but also bear the pressure of the deep rock mass, thus greatly improving the safety of the roadway.

[0017] 4. By applying anti-corrosion coatings to the support structure, connecting crossbars, and metal mesh surfaces, and by using high-strength alloy steel, this utility model significantly enhances the corrosion resistance of the device in the humid and dusty environment of a mine, thus extending its service life. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 A schematic diagram of the support device for stabilizing the surrounding rock after blasting in an underground phosphate mine, provided by this utility model, for supporting the surrounding rock of the tunnel.

[0020] Figure 2 A schematic diagram of the overall structure of the underground phosphate mine blasting surrounding rock stabilization support device provided by this utility model;

[0021] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle;

[0022] Figure 4 This is a schematic diagram of the supporting structure in this utility model;

[0023] Figure 5 This is a partial structural diagram of the support structure in this utility model.

[0024] In the diagram: 1. Support structure; 101. Support frame; 102. Connecting groove; 103. Threaded hole; 104. Mounting plate; 105. Hydraulic cylinder; 106. Support base; 107. Guide groove; 2. Connecting crossbar; 3. Bolt; 4. Metal mesh; 5. Anchor bolt; 6. Conical spike; 7. Side plate; 8. Slide rod. Detailed Implementation

[0025] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will understand that modifications and variations can be made to the present application without departing from the scope or spirit of the present application. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model should fall within the protection scope of the present utility model.

[0026] Please refer to the following: Figures 1 to 5 A stabilization support device for surrounding rock after blasting in an underground phosphate mine includes: a support structure 1 installed in the surrounding rock of the roadway; the support structure 1 includes a support frame 101; a plurality of connecting grooves 102 are provided on the support frame 101; threaded holes 103 are provided in the connecting grooves 102; two mounting plates 104 are fixedly installed on the inner side of the bottom of the support frame 101; a hydraulic cylinder 105 is fixedly installed on the mounting plate 104; a support seat 106 is fixedly installed on the output shaft of the hydraulic cylinder 105; and a guide groove 107 is provided on the support frame 101.

[0027] Multiple connecting crossbars 2 are provided between two adjacent support structures 1. Bolts 3 are installed at both ends of the connecting crossbars 2. The bolts 3 are threadedly connected to the threaded holes 103. The connecting crossbars 2 are fixed in the connecting grooves 102 by the bolts 3.

[0028] like Figure 1 As shown, a metal mesh 4 is laid on the surface of the surrounding rock of the tunnel, and the metal mesh 4 is fixed to the surface of the surrounding rock of the tunnel by multiple anchor bolts 5;

[0029] By covering the surface of the surrounding rock with metal mesh 4 and anchoring it to the inside of the rock mass with anchor bolts 5, the expansion of surface cracks in the surrounding rock can be effectively restrained, small rock fragments can be prevented from peeling off, and the first protective barrier can be formed.

[0030] like Figure 4As shown, two conical spikes 6 are fixedly installed at the bottom of the support base 106;

[0031] By embedding the cone-shaped spike 6 into the surface of the surrounding rock, the stability of the connection between the support base 106 and the surrounding rock can be increased, avoiding slippage and displacement during the support process and ensuring stable transmission of support force.

[0032] like Figure 4 and Figure 5 As shown, two side plates 7 are fixedly installed on the top of the support base 106, and a slide rod 8 is fixedly installed between the two side plates 7. The slide rod 8 passes through the guide groove 107 and is slidably connected to the guide groove 107.

[0033] By sliding the slide bar 8 in the guide groove 107, the movement direction of the support seat 106 can be precisely guided, preventing the support seat 106 from shifting when driven by the hydraulic cylinder 105, and ensuring that the direction of the supporting force is consistent with the direction of the surrounding rock pressure.

[0034] like Figure 4 As shown, the support frame 101 has a "U" shaped structure, which is adapted to the surrounding rock of the tunnel, and is made of high-strength alloy steel.

[0035] The U-shaped structure, designed to fit snugly against the surrounding rock of the tunnel, maximizes the contact area and evenly transmits the supporting force. The use of high-strength alloy steel ensures that the support frame 101 has sufficient load-bearing capacity to meet the load requirements of the surrounding rock after blasting.

[0036] like Figure 1 As shown, the surfaces of the support structure 1, the connecting crossbar 2, and the metal mesh 4 are coated with an anti-corrosion coating.

[0037] The anti-corrosion coating effectively protects metal parts from corrosion caused by water vapor and dust in the mine. Combined with the material properties, it significantly extends the maintenance cycle and service life of the equipment.

[0038] The working principle of the underground phosphate mine blasting surrounding rock stabilization support device provided by this utility model is as follows:

[0039] First step: Lay the metal mesh 4 flat on the surface of the surrounding rock of the tunnel, ensuring that the mesh pieces overlap tightly. Then use anchor bolts 5 to anchor the metal mesh 4 to the surrounding rock. The anchor bolts 5 need to penetrate deep enough into the rock mass so that the metal mesh 4 can effectively restrain the deformation and peeling of the surrounding rock surface.

[0040] The second step: Based on the actual condition of the surrounding rock in the tunnel, place the support frame 101 in a suitable position at a preset interval, so that its "U"-shaped structure fits snugly against the surrounding rock. Start the hydraulic cylinder 105 to drive the support seat 106 to move downward until the cone 6 at the bottom of the support seat 106 is embedded in the surface of the surrounding rock. At this time, the slide rod 8 slides synchronously in the guide groove 107 to ensure that the support seat 106 moves smoothly and that the supporting force is evenly applied to the surrounding rock.

[0041] The third step: Connect and fix the adjacent support structures 1 by connecting crossbars 2 and bolts 3, so that the various support structures 1 form a continuous overall support system.

[0042] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0043] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0044] 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, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. A rock stabilization support device after blasting in an underground phosphate mine, characterized in that, The support structure includes a support frame, which has multiple connecting slots and threaded holes. Two mounting plates are fixedly installed on the bottom inner side of the support frame, and hydraulic cylinders are fixedly installed on the mounting plates. A support seat is fixedly installed on the output shaft of the hydraulic cylinders, and a guide groove is provided on the support frame. Multiple connecting crossbars are provided between two adjacent support structures. Bolts are installed at both ends of each connecting crossbar, and the bolts are threaded into threaded holes. The connecting crossbars are fixed in the connecting groove by bolts.

2. The underground phosphate mine blasting surrounding rock stabilization support device according to claim 1, characterized in that, The surface of the surrounding rock of the tunnel is covered with a metal mesh, which is fixed to the surface of the surrounding rock by multiple anchor bolts.

3. The underground phosphate mine blasting surrounding rock stabilization support device according to claim 1, characterized in that, Two conical spikes are fixedly installed at the bottom of the support base.

4. The underground phosphate mine blasting surrounding rock stabilization support device according to claim 1, characterized in that, Two side plates are fixedly installed on the top of the support base, and a sliding rod is fixedly installed between the two side plates. The sliding rod passes through the guide groove and is slidably connected to the guide groove.

5. The underground phosphate mine blasting surrounding rock stabilization support device according to claim 1, characterized in that, The support frame has a "U" shaped structure, which is adapted to the surrounding rock of the tunnel, and is made of high-strength alloy steel.

6. The underground phosphate mine blasting surrounding rock stabilization support device according to claim 1, characterized in that, The support structure, connecting crossbars, and metal mesh surfaces are coated with an anti-corrosion coating.

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