Supporting structure suitable for thin vein narrow space stope

Abstract

The utility model relates to the technical field of vein mining supporting, and particularly discloses a supporting structure suitable for a narrow space stope of a thin vein, the supporting structure is arranged in a stope space formed in surrounding rock, one or more supports are arranged on the inner side of the stope space, each support comprises a base used for supporting and a supporting cylinder arranged on the base, and the supporting cylinders are arranged on the bases. The inner side of the supporting cylinder is slidably connected with an extension column, the extension column is sleeved with a sleeve, and the top of the sleeve is provided with a top plate. Through the combination of the base, the supporting cylinder, the extension column and the sleeve, a supporting assembly capable of being dynamically adjusted and stabilized is formed, especially through the cooperation of the limiting groove and the limiting protrusion, the extension column can be prevented from sliding or inclining, and the stability of the whole supporting structure is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of ore vein mining support, in particular to a support structure suitable for a mining field with a narrow space of a thin ore vein. Background Art

[0002] Thin veins are a common occurrence in rare and precious metal deposits in my country. Their stopes are limited, typically only 1-2 meters wide. Existing anchor bolts, typically 1.2-2 meters long, are difficult to install within these confined spaces and offer limited support. This is especially true when the ore is broken or the rock mass is poor, leading to frequent roof falls, the most common and significant type of accident in mines.

[0003] The use of traditional support methods (such as anchor rods and anchor nets) has low construction efficiency and exposes workers to dangerous environments; the support strength of wooden cross braces and columns is limited, the wood is difficult to recycle, and it is easy to cause fire.

[0004] In order to ensure the safe and efficient development of thin vein resources, the support problem of the mine, especially the roof, needs to be solved urgently. Based on this, the present application provides a support structure suitable for narrow space mines with thin veins. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a support structure suitable for narrow space mining sites with thin ore veins, which solves the problems of low construction efficiency and exposure of workers to dangerous environments when using traditional support methods.

[0006] The utility model is suitable for a support structure for a narrow space stope with a thin mineral vein. The support structure is arranged in a stope space opened in the surrounding rock. One or more brackets are arranged on the inner side of the stope space. The brackets include a base for support and a support tube arranged on the base. An extension column is slidably connected to the inner side of the support tube. A sleeve is provided on the upper side of the extension column. A top plate is installed on the top of the sleeve. One or more support bars are provided on the top of the top plate in a mirror-symmetrical manner. A resin protective net is arranged between the support bars and the top of the stope space to form a flexible roof that can suspend the crushed surrounding rock on the top of the stope space.

[0007] One or more through holes are arranged at equal distances on the outer side of the support bar, and a hook is installed thereon. The hook is used to be hooked with the resin protection net for mounting the resin protection net.

[0008] As a further improvement of the present invention, the support bar includes a bar body, a slot is provided downwardly on the top of the bar body, a rack is installed at the slot, and the rack is connected to the hook of the resin protective net for supporting the resin protective net.

[0009] As a further improvement of the present invention, the card slot is provided with one or more positioning holes in a linear array, and connectors are installed in the positioning holes for fixing the rack.

[0010] As a further improvement of the present invention, connecting blocks are provided on both sides of the strip body, and the connecting blocks are adapted to the top plate and are used to support the strip for reinforcement.

[0011] As a further improvement of the present invention, the inner side of the support tube is provided with a ring-shaped array of limiting grooves, and the outer side of the extension column is provided with a limiting protrusion adapted to the limiting grooves for maintaining the stability of the extension column.

[0012] As a further improvement of the present invention, one or more telescopic parts are provided on the inner side of the support tube, and the telescopic parts are adapted to the bottom of the extension column.

[0013] As a further improvement of the present invention, the extension column is provided with a threaded connection portion above the limiting protrusion.

[0014] As a further improvement of the present invention, an inner thread groove is provided on the inner side of the sleeve, and the inner thread groove is adapted to the threaded connection portion.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model forms a support assembly that can be dynamically adjusted and stabilized by combining the base, support tube, extension column and sleeve. In particular, the cooperation between the limiting groove and the limiting protrusion can prevent the extension column from sliding or tilting, thereby enhancing the stability of the overall support structure.

[0017] The telescopic parts on the inside of the support tube can adjust the height of the extension column in real time according to the changes in the mining area height, adapt to the mining area spaces of different heights, and improve the flexibility and practicality of the device; the positioning holes and connectors on the support bar allow the rack length to be adjusted as needed to adapt to mining areas of different shapes and sizes, thereby enhancing the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the surrounding rock and support combination in the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the bracket in the utility model;

[0021] Figure 3This is a schematic diagram of the front view structure of the bracket in the utility model;

[0022] Figure 4 for Figure 3 Schematic diagram of the AA section structure;

[0023] Figure 5 This is a schematic diagram of the structure of the bracket in the utility model when viewed from above;

[0024] Figure 6 This is a schematic diagram of the top view of the bracket structure of the utility model;

[0025] Figure 7 This is a schematic diagram of the front view structure of the bracket adjustment in the utility model;

[0026] Figure 8 for Figure 7 A in the middle is an enlarged structural diagram;

[0027] Figure 9 This is a schematic diagram of the combined structure of the rack and support bar in the utility model.

[0028] In the figure: 1. Surrounding rock; 2. Resin protective net; 3. Support; 4. Stope space;

[0029] 31. Support tube; 32. Limiting groove; 33. Threaded connection; 34. Sleeve; 35. Extension column; 36. Base; 37. Support bar; 38. Top plate; 39. Positioning hole; 310. Slot; 311. Internal screw groove; 312. Telescopic member; 313. Limiting protrusion; 314. Hook;

[0030] 371. Bar body; 372. Connecting block; 373. Rack; 374. Connecting piece. DETAILED DESCRIPTION

[0031] The following diagrams illustrate various embodiments of the present invention. For clarity, many physical details will be included in the following description. However, it should be understood that these physical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not essential. Furthermore, to simplify the illustrations, some commonly used structures and components are depicted in a simplified schematic manner.

[0032] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0033] like Figure 1-Figure 7As shown, the support structure provided in this application is suitable for a narrow space stope with a thin ore vein. The support structure is arranged in a stope space 4 opened in the surrounding rock 1 , and one or more supports 3 are arranged on the inner side of the stope space 4 .

[0034] The bracket 3 includes a base 36 for support and a support tube 31 arranged on the base 36. The inner side of the support tube 31 is slidably connected with an extension column 35. A sleeve 34 is sleeved on the top of the extension column 35. A top plate 38 is installed on the top of the sleeve 34. One or more support bars 37 are arranged on the top of the top plate 38 in a mirror-symmetrical manner. A resin protective net 2 is arranged between the support bar 37 and the top of the mining space 4 to form a flexible ceiling that can suspend the broken surrounding rock 1 on the top of the mining space 4.

[0035] One or more through holes are opened at equal distances on the outer side of the support bar 37 , and a hook 314 is installed thereon. The hook 314 is used to be hooked with the resin protection net 2 for mounting the resin protection net 2 .

[0036] The bracket 3 is fixed on the upper and lower plates of the mining field and is evenly arranged at intervals of 0.5-2.0m along the mining field. As a column, the base 36 used for support is located at the bottom of the mining field space 4 to provide a stable support foundation. The base 36 can be made of high-strength steel or alloy to ensure the load-bearing capacity, and the support tube 31 is installed on the base 36 to provide a sliding guide path for the extension column 35. A slide groove is provided inside the support tube 31 to ensure smooth sliding of the extension column 35.

[0037] It should be noted that the extension column 35 can slide along the interior of the support tube 31, adjusting its length according to the height of the stope space 4 to achieve dynamic support. Because the vertical height of the dome inside the stope space 4 cannot be completely consistent with the ground, the dynamic support method can facilitate adjustments by the staff.

[0038] In addition, the top of the extension column 35 is connected to the sleeve 34. At this time, the sleeve 34 is located above the extension column 35, and the top is connected to the top plate 38. It is connected to the extension column 35 through the sleeve 34. The support bars 37 are set at the top in a mirror-symmetrical manner. Each support bar 37 has equidistant through holes for installing hooks 314. The installed hooks 314 can mount the resin support net when supporting, and the hooks 314 are installed in the through holes of the support bars 37 to ensure the stable suspension of the protective net. The number of hooks can be connected according to different arrangement spacings to meet the needs of use.

[0039] A resin protective net 2 is arranged between the support bars 37 and the top of the stope space 4 to form a flexible roof for suspending and supporting the broken surrounding rock 1.

[0040] By combining the bracket 3 assembly and the resin protective net 2, an effective support structure is formed, which can improve the safety of the mining site. The sliding design of the bracket 3 assembly enables the support structure to adapt to mining sites 4 of different heights, thereby enhancing the adaptability and flexibility of the device. The combination of the resin protective net 2 and the dome, through the restriction of the support bar 37, realizes a flexible ceiling protection measure.

[0041] See also Figure 2-Figure 7 The support bar 37 includes a bar body 371, and a slot 310 is opened downward at the top of the bar body 371. A rack 373 is installed at the slot 310. The rack 373 is hooked with the resin protective net 2 to support the resin protective net 2. The slot 310 opened downward at the top of the bar body 371 can be used to install the rack 373.

[0042] It can be understood that the above-mentioned slot 310 can ensure the stability of the rack 373 and can be easily connected to the hook of the resin protection net 2.

[0043] In some embodiments, the slot 310 is provided with one or more positioning holes 39 in a linear array, and a connector 374 is installed in the positioning hole 39 for fixing the rack 373 .

[0044] It should be noted that the rack 373 is in contact with the resin protection net 2, which can improve the strength of the support, meet the needs of use, and ensure the stability and safety of the protection net.

[0045] Furthermore, connecting blocks 372 are provided on both sides of the strip body 371. The connecting blocks 372 are adapted to the top plate 38 and are used to reinforce the support strip 37. The connecting blocks 372 provided on both sides of the strip body 371 are generally connected in a fixed manner, such as welding or bolt fixing. In this way, the strip body 371 can be fixed on the top plate 38 to meet the support needs of the support strip 37.

[0046] The combination of the support bar 37 and the resin protective net 2 provides stronger supporting performance, ensuring effective support for the surrounding rock 1, and the positioning hole 39 allows the rack 373 to be adjusted during the installation process to adapt to the mining environment of different heights and shapes, thereby improving the flexibility of the device; the adaptation of the connecting block 372 and the top plate 38 makes the installation and disassembly of the support bar 37 more convenient, which can save construction time and improve construction efficiency.

[0047] See also Figure 2-Figure 9The inner side of the support tube 31 is provided with a limiting groove 32 in an annular array, and the outer side of the extension column 35 is provided with a limiting protrusion 313 adapted to the limiting groove 32, which is used to maintain the stability of the extension column 35. The inner side of the support tube 31 is provided with multiple limiting grooves 32 in an annular array, and the layout of the grooves is uniform, so that the extension column 35 can be effectively limited in displacement during operation to prevent it from deviating inward or outward.

[0048] In some embodiments, one or more telescopic parts 312 are provided on the inner side of the support tube 31, and the telescopic parts 312 are adapted to the bottom of the extension column 35. The outer side of the extension column 35 is provided with a limiting protrusion 313 that is adapted to the limiting groove 32, ensuring that the extension column 35 maintains a high stability in the working state, preventing the extension column 35 from sliding or tilting during the mining operation, ensuring the stability of the bracket 3, and reducing the risk of collapse accidents.

[0049] In specific use, the above-mentioned telescopic member 312 can adopt a structure such as a pneumatic cylinder or a spring. The telescopic member 312 is adapted to the bottom of the extension column 35 and can be used to adjust the height of the extension column 35, thereby enabling the support device to adapt to different mining fields and improve operational flexibility.

[0050] In some other embodiments, the extension column 35 is provided with a threaded connection portion 33 above the limiting protrusion 313 , and an inner thread groove 311 is provided on the inner side of the sleeve 34 , and the inner thread groove 311 is adapted to the threaded connection portion 33 .

[0051] It should be noted that the threaded connection part 33 set above can be quickly disassembled, which is convenient for maintenance and replacement operations, and the inner side of the sleeve 34 is provided with an internal thread groove 311, which is adapted to the threaded connection part 33 of the extension column 35, to ensure the firmness of the connection and maintain good stability when external force is applied, thereby avoiding loosening during operation.

[0052] At the same time, the threaded connection part 33 and the inner thread groove 311 simplify the connection and disassembly process of the support tube 31 and the extension column 35, which can improve the efficiency of maintenance and replacement, and cooperate with the resin protective net 2 to protect the dome of the mining space 4 and ensure the overall stability of the mining space 4.

[0053] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A support structure suitable for a narrow stope with a thin ore vein, the support structure being arranged in a stope space (4) opened in the surrounding rock (1), and characterized by: One or more brackets (3) are provided on the inner side of the stope space (4), and the brackets (3) include a base (36) for support and a support tube (31) provided on the base (36), an extension column (35) is slidably connected to the inner side of the support tube (31), a sleeve (34) is provided above the extension column (35), a top plate (38) is installed on the top of the sleeve (34), and one or more support bars (37) are provided on the top of the top plate (38) in a mirror-symmetrical manner, and a resin protection net (2) is arranged between the support bar (37) and the top of the stope space (4), forming a flexible roof that can suspend the crushed surrounding rock (1) on the top of the stope space (4); One or more through holes are provided at equal distances on the outside of the support bar (37), and a hook (314) is installed thereon. The hook (314) is used to be hooked with the resin protection net (2) for mounting the resin protection net (2).

2. The support structure suitable for narrow-space stopes with thin ore veins according to claim 1 is characterized by: The support bar (37) comprises a bar body (371), a slot (310) is provided downwardly on the top of the bar body (371), a rack (373) is installed at the slot (310), and the rack (373) is connected to the resin protection net (2) by a hook for supporting the resin protection net (2).

3. The support structure suitable for narrow-space stopes with thin ore veins according to claim 2 is characterized in that: The slot (310) is provided with one or more positioning holes (39) in a linear array, and a connecting piece (374) is installed in the positioning hole (39) for fixing the rack (373).

4. The support structure suitable for narrow-space stopes with thin ore veins according to claim 2 is characterized in that: Connecting blocks (372) are provided on both sides of the strip body (371), and the connecting blocks (372) are adapted to the top plate (38) and are used to reinforce the supporting strip (37).

5. The support structure suitable for narrow-space stopes with thin ore veins according to claim 1 is characterized in that: The inner side of the support tube (31) is provided with a limiting groove (32) in an annular array, and the outer side of the extension column (35) is provided with a limiting protrusion (313) adapted to the limiting groove (32) for maintaining the stability of the extension column (35).

6. The support structure suitable for narrow-space stopes with thin ore veins according to claim 1 is characterized in that: One or more groups of telescopic members (312) are provided on the inner side of the support tube (31), and the telescopic members (312) are adapted to the bottom of the extension column (35).

7. The support structure suitable for narrow-space stopes with thin ore veins according to claim 1 is characterized in that: The extension column (35) is provided with a threaded connection portion (33) above the limiting protrusion (313).

8. The support structure suitable for narrow-space stopes with thin ore veins according to claim 7 is characterized in that: An inner thread groove (311) is provided on the inner side of the sleeve (34), and the inner thread groove (311) is adapted to the threaded connection portion (33).

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