Device for improving construction efficiency under scattered ruins of underground mine

Abstract

The utility model relates to the technical field of underground metal mine discrete body ruin under-slag tunneling and supporting, in particular to a device for improving underground mine discrete body ruin under-slag construction efficiency, which comprises at least two supporting frames and supporting rods, each supporting frame is formed by welding transverse deformed steel bars and vertical deformed steel bars, and the supporting frames and the supporting rods are connected in a welding mode. The same supporting rod is connected with all the supporting frames in a welded mode, the supporting rods are welded to the two conveying deformed steel bars of each supporting frame and the transverse deformed steel bar on the top, the upper portion and the side face of a structure formed after the supporting rods are welded to all the supporting frames are covered with reinforcing meshes, and the device is easy and convenient to operate, safe, efficient and low in cost. And compared with an original traditional construction process, the operation safety is obviously improved, the construction efficiency is obviously improved, and the method can be widely applied to underground metal mine bulk ruins under-slag tunneling and supporting.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground metal mine bulk slag tunneling and support, and particularly relates to a device for improving the construction efficiency under the bulk slag in an underground mine. Background Art

[0002] After years of mining in underground metal mines, there are a large number of residual ore resources to be recovered. There is some bulk slag left in the stope goafs around some residual ores. When necessary, it is required to tunnel the drift and development engineering through the bulk slag. At present, the tunneling operation mainly adopts technologies such as advanced pipe shed support and large-scale advanced grouting. There are mainly problems such as too high construction cost, long maintenance period, and low construction efficiency. Content of the Utility Model

[0003] In order to reduce the above-mentioned adverse effects, the utility model provides a device for improving the construction efficiency under the bulk slag in an underground mine, which greatly improves the tunneling safety and construction efficiency under the bulk slag, and finally realizes the improvement of the enterprise economic benefit and the improvement of the operation safety of personnel and equipment.

[0004] In order to achieve the above purposes, the technical solution adopted by the utility model is as follows:

[0005] A device for improving the construction efficiency under the bulk slag in an underground mine, comprising no less than two support frames and support rods. The support frame is welded by horizontal deformed steel bars and vertical deformed steel bars, and the support frame is welded to the support rod, and the same support rod is welded to all support frames. Support rods are welded on the two conveying deformed steel bars and the top horizontal deformed steel bar of the support frame, and a steel mesh is covered and installed on the upper part and side of the structure formed after all support frames are welded with support rods.

[0006] Preferably, all support rods extend beyond the structure composed of the support frame and the steel mesh, and the extended part has a length of 20 - 30 cm, and the end of the extended part is conical.

[0007] Preferably, the support rod is a seamless steel pipe with a diameter of 80 mm and a wall thickness of not less than 3 mm, and the distance between adjacent seamless steel pipes is 20 - 25 cm.

[0008] Preferably, the support rod comprises a main body rod and a conical head. A threaded rod is arranged at one end of the main body rod close to the conical head, and a threaded hole for socketing and cooperating with the threaded rod is opened in the conical head.

[0009] Preferably, the threaded rod and the conical head are provided with radially extending clamping holes, and the threaded rod and the conical head are clamped radially through clamping bolts.

[0010] Preferably, the clamping hole in the conical head is a stepped hole, and the bolt head of the clamping bolt is completely embedded in the stepped hole.

[0011] Preferably, two clamping holes with a phase difference of 180 degrees are provided on the conical head. Each clamping hole is equipped with a clamping bolt, and the total length of the two clamping bolts is less than the outer diameter of the conical head.

[0012] The technical effects of the present utility model are as follows:

[0013] 1. The actual operation of this device is simple, safe, efficient, and low-cost. Compared with the original traditional construction process, the operation safety is significantly improved, and the construction efficiency is significantly increased. It can be widely applied to the tunneling and support under the loose slag in underground metal mines.

[0014] 2. This device adopts a conical design for the support rod beyond the end, which can be inserted into the working surface to fix the overall device.

[0015] 3. The conical head needs to be inserted into the working surface and is likely to be damaged. This device adopts a design that divides the support rod into a main body rod and a conical head, so that the disassembly and replacement of the conical head can be realized, further reducing the maintenance cost.

[0016] 4. This device adopts the design of clamping holes and clamping bolts, which can radially fasten the main body rod and the conical head in the radial direction. Before the two clamping bolts are inserted into the clamping holes of the threaded rod, they can be used as the handles for tightening the conical head, facilitating the locking and disassembly operations of the conical head and the threaded rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the construction process.

[0019] Figure 2 It is a schematic diagram of the effect after the device is installed.

[0020] Figure 3 It is a three-dimensional schematic diagram of the device of the present utility model for improving the construction efficiency under the loose slag in underground mines.

[0021] Figure 4 It is a schematic diagram of the separated state of the support rod in Embodiment 2.

[0022] Figure 5 It is a schematic diagram of the sleeved state of the main body rod and the conical head in Embodiment 2.

[0023] Figure 6Schematic diagram after the main rod and the conical head are fully connected in Embodiment 2.

[0024] The text markings shown in the figure are as follows: 1. Loose waste slag; 2. Excavation contour line; 3. Support rod; 4. Horizontal ribbed steel; 5. Roadway formed by excavation; 6. Steel mesh; 7. Vertical ribbed steel; 11. Main rod; 12. Threaded rod; 13. Conical head; 14. Threaded hole; 15. Clamping hole; 16. Clamping bolt. Detailed implementation mode

[0025] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] As Figures 1-3 shown, the device for improving the construction efficiency under loose waste slag in underground mines of the present invention includes not less than two support frames and support rods 3. The support frames are welded by horizontal ribbed steel 4 and vertical ribbed steel 7, and the support frames and support rods 3 are welded and connected. The same support rod 3 is welded to all the support frames. Support rods 3 are welded on both the two conveying ribbed steels 7 and the top horizontal ribbed steel 7 of the support frame, and a steel mesh 6 is covered and installed on the upper part and side of the structure formed after all the support frames are welded with the support rods 7.

[0028] It should be noted that all the support rods 7 extend beyond the structure composed of the support frames and the steel mesh 6. The extended part has a length of 20 - 30 cm, and the end of the extended part is conical.

[0029] Preferably, the above support rods are seamless steel pipes. The diameter of the seamless steel pipes is 80 mm, the wall thickness is not less than 3 mm, and the distance between adjacent seamless steel pipes is 20 - 25 cm.

[0030] In a specific embodiment, the required roadway to be supported has a specification of 2 m × 2 m and a length of 1.5 m; the distance between seamless steel pipes is 0.25 m, the length is 1.7 m, the diameter is 80 mm, and the wall thickness is not less than 3 mm. At 0, 0.75 m, and 1.5 m of the seamless steel pipes, the seamless steel pipes 3 are welded to the ribbed steels 4 and 7. The diameter of the ribbed steel is not less than 3 cm.

[0031] After the ribbed steel bars are welded, steel bar meshes 6 are welded to the top and both sides to prevent pumice from falling. The mesh size of the steel bar mesh is 5 cm × 5 cm, and the diameter is more than 2 mm. At the same time, a conical tip is welded at the front of the seamless steel pipe, and 20 cm at the front end is reserved without welding ribbed steel bars and steel bar meshes for fixing the overall device.

[0032] After the slag discharge is completed, the prefabricated support device is pushed into the roadway as a whole. When the conical tip in the front contacts the working face, a drilling impactor is used to impact the seamless steel pipe, so that the sharp cone and the 20 cm reserved part at the front end are inserted into the working face to fix the overall device.

[0033] After installing this device, the next processes of tunneling, blasting, support, etc. can be continued, and finally the rapid construction of the entire roadway can be completed.

[0034] In specific use, support devices with corresponding sizes can be processed according to different roadway specifications, which is flexible and convenient.

[0035] Embodiment 2

[0036] As Figures 1-6 shown, a device for improving the construction efficiency under the bulk slag in underground mines includes no less than two support frames and support rods 3. The support frames are welded by transverse ribbed steel bars 4 and vertical ribbed steel bars 7, and the support frames and support rods 3 are welded and connected. The same support rod 3 is welded to all support frames. Support rods 3 are welded on both conveying ribbed steel bars 7 and the transverse ribbed steel bar 7 at the top of the support frame, and a steel bar mesh 6 is covered and installed on the upper part and side of the structure formed after all support frames are welded with support rods 7.

[0037] All support rods 7 extend beyond the structure composed of the support frame and the steel bar mesh 6. The extended part has a length of 20 - 30 cm, and the end of the extended part is conical.

[0038] In this embodiment, the support rod 3 includes a main body rod 11 and a cone head 13. A threaded rod 12 is arranged at one end of the main body rod 11 close to the cone head 13. The cone head 13 is provided with a threaded hole 14 socket - fitted with the threaded rod 12. Radially - oriented clamping holes 15 are opened on the threaded rod 12 and the cone head 13, and the threaded rod 12 and the cone head 13 are clamped radially by a clamping bolt 16. Two clamping holes 15 with a phase difference of 180 degrees are opened on the cone head 13. The clamping holes 15 in the cone head 13 are stepped holes. Each clamping hole is fitted with a clamping bolt 16, and the total length of the two clamping bolts 16 is less than the outer diameter of the cone head 13. The bolt head of the clamping bolt 16 is completely embedded in the stepped hole.

[0039] The tunnel specifications required for support in this embodiment are 2m×2m and 1.5m in length; the support rods are spaced 0.25m apart and 1.7m long, of which the main rod 11 is 1.55m long. The main rod 11 is welded to the threaded steel bars 4 and 7 at 0, 0.75m and 1.5m of the main rod 11, and the diameter of the threaded steel bars is not less than 3cm.

[0040] After the threaded steel is welded, a steel mesh 6 is welded on the top and both sides to prevent the floating stone from falling. The mesh size of the steel mesh is 5cm×5cm and the diameter is more than 2mm. Then the cone head 13 is installed on the main rod 11. The initial state is as follows: Figure 4 As shown, the bolt heads (hexagon sockets) of the two clamping bolts 16 on the cone head 13 extend beyond the cone head 13 and can be used as temporary handles when tightening the vertebral body. At this time, the clamping bolts 16 and the clamping holes in the cone head 13 are in a threaded sleeve state, and then the vertebral body 13 is sleeved with the threaded rod 11. Then, the cone head 13 and the bolt rod 11 are completely sleeved with the temporary handle as the fulcrum, and the state is as shown in FIG. Figure 5 As shown, the clamping bolt 16 is then screwed into the clamping hole 15 provided on the threaded rod 12 to complete the installation of the main rod 11 and the cone head 13. Figure 6 shown.

[0041] After the slag discharge is completed, the pre-processed support device is pushed into the tunnel as a whole. When the cone head contacts the working surface, the drilling impactor is used to impact the support rod 3 so that the cone head is inserted into the working surface to fix the entire device.

[0042] After the device is installed, the next step of excavation, blasting, support and other processes can be carried out to eventually complete the rapid construction of all tunnels.

[0043] In specific use, the support devices of corresponding sizes can be processed according to different tunnel specifications, which is flexible and convenient.

[0044] Since the cone head needs to be inserted into the working surface by impacting the support rod 3, a strong collision will occur at the cone head, and the cone head is easily damaged. The cone head of this embodiment can be disassembled and replaced separately, which can further save maintenance costs compared to replacing the entire support rod structure.

[0045] Further, it should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0046] Unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed" shall be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] Unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0048] The above embodiments are illustrative of the present utility model and not restrictive thereof. It can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The protection scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for improving the construction efficiency under underground mine bulk slag, characterized in that: It includes no less than two support frames and support rods. The support frame is welded by horizontal threaded steel and vertical threaded steel. The support frame and the support rod are welded together, and the same support rod is welded together with all the support frames. Support rods are welded to the two conveying threaded steel bars and the top horizontal threaded steel bars of the support frame, and the upper and side parts of the structure formed by welding the support rods to all the support frames are covered with steel mesh.

2. The device for improving the construction efficiency under underground mine bulk slag according to claim 1 is characterized in that: All support rods extend beyond the structure composed of the support frame and the steel mesh, the length of the extended portion is 20-30 cm, and the ends of the extended portions are tapered.

3. The device for improving the construction efficiency under underground mine bulk slag according to claim 2 is characterized in that: The support rod is a seamless steel pipe with a diameter of 80 mm and a wall thickness of not less than 3 mm. The spacing between adjacent seamless steel pipes is 20-25 cm.

4. The device for improving the construction efficiency under underground mine loose slag according to claim 2 is characterized in that: The support rod comprises a main rod and a cone head. A threaded rod is arranged at one end of the main rod close to the cone head, and a threaded hole which is sleeved and matched with the threaded rod is provided on the cone head.

5. The device for improving the construction efficiency under underground mine bulk slag according to claim 4 is characterized in that: The threaded rod and the cone head are provided with radially extending clamping holes, and the threaded rod and the cone head are clamped in the radial direction by clamping bolts.

6. The device for improving the construction efficiency under underground mine loose slag according to claim 5 is characterized in that: The clamping hole in the cone head is a stepped hole, and the bolt head of the clamping bolt is completely embedded in the stepped hole.

7. The device for improving the construction efficiency under underground mine loose slag according to claim 6 is characterized in that: The cone head is provided with two clamping holes with a phase difference of 180 degrees, each clamping hole is matched with a clamping bolt, and the total length of the two clamping bolts is smaller than the outer diameter of the cone head.

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