CN-224214200-U - Supporting and protecting structure for preventing surrounding rock from falling at mine stope port

CN224214200UCN 224214200 UCN224214200 UCN 224214200UCN-224214200-U

Abstract

The utility model discloses a supporting and protecting structure for preventing surrounding rocks from falling at a mine stope port, which comprises protecting plates, wherein the protecting plates are connected with anchor rods, the anchor rods are movably connected with the protecting plates, a plurality of protecting plates are respectively inserted into the surrounding rocks to realize installation and fixation, adjacent protecting plates are movably connected with each other to form an arch state along the inner wall of the surrounding rocks, at least two swingable adjusting rods are inserted into each protecting plate, the front ends of the adjusting rods are connected with swingable gaskets, the inner wall of the surrounding rocks is tightly adhered by the gaskets, and a detection line is connected between each two adjusting rods for detecting deformation of the surrounding rocks. Therefore, the utility model has the advantages of simple structure, convenient construction, flexible use, low cost, strong compression resistance and bending resistance, self-adaptive adjustment and attachment to the surrounding rock wall, capability of detecting the surrounding rock condition, adjustable structural size and the like, and can be applied to surrounding rock crushing protection of different sections of underground mines, in particular to protection of a stope port against falling of surrounding rock.

Inventors

LI GUIQI
LI XIANGRONG
YANG LIANG
XU WEI
ZHAO GUOFU
QI NA
YANG PENG
WANG TONGKE
BAO ZHIPENG
ZHOU JIXIANG
LI KAI
Tabanig
Ba Risi
CHAO BAO

Assignees

西部矿业股份有限公司
巴彦淖尔西部铜业有限公司

Dates

Publication Date: 20260508
Application Date: 20250625

Claims (8)

1. A supporting and protecting structure for preventing surrounding rocks from falling at a mining stope port is characterized by comprising protection plates, wherein the protection plates are connected with anchor rods, the anchor rods are movably connected with the protection plates, a plurality of protection plates are respectively inserted into the surrounding rocks to realize installation and fixation, adjacent protection plates are movably connected with each other to form an arch state along the inner walls of the surrounding rocks, at least two swingable adjusting rods are inserted into each protection plate, the front ends of the adjusting rods are connected with swingable gaskets, the inner walls of the surrounding rocks are tightly adhered by the gaskets, and detection lines are connected between every two adjusting rods to form a detection mechanism for deformation of the surrounding rocks.
2. The supporting and protecting structure for preventing surrounding rocks from falling at a mine stope according to claim 1, wherein the protecting plate is of a three-layer structure, the front surface is a panel, the back surface is a back plate, an intermediate layer is arranged between the panel and the back plate, the thickness of the intermediate layer is larger than that of the panel and the back plate, the panel and the back plate are both hard plates, and the intermediate layer is of an elastic honeycomb structure.
3. The supporting and protecting structure for preventing surrounding rock from falling at a stope of a mine as set forth in claim 1, wherein the hole diameter of the hole in the protecting plate for passing through the adjusting rod is slightly larger than the diameter of the adjusting rod so that the adjusting rod can swing in a small range, a washer is fixed on the adjusting rod, and the retaining structure for the adjusting rod is formed by clamping the protecting plate through the washer.
4. The supporting and protecting structure for preventing surrounding rocks from falling at a mine stope port according to claim 2, wherein the anchor rods are connected with the protecting plates in a hinged manner, the hinged positions are arranged in the middle of the back plate of the protecting plates, and the anchor rods are inserted into the surrounding rocks obliquely upwards to form a hanging structure for the protecting plates.
5. The supporting and protecting structure for preventing surrounding rocks from falling at a mine stope port according to claim 1, wherein the gasket and the adjusting rod are pivoted and fixed through a movable shaft, and a spike structure is fully distributed on one surface of the gasket facing the surrounding rocks.
6. The supporting and protecting structure for preventing surrounding rocks from falling at a mining stope port according to claim 1, wherein the protection plates at the bottommost ends of the two sides are connected with a buffer mechanism, the buffer mechanism comprises a bottom plate, a base plate and a sliding plate, the bottom plate is installed on the ground and inserted into the surrounding rocks, the base plate is obliquely upwards movably installed on the bottom plate towards the surrounding rocks and forms an included angle with the bottom plate, the protection plates at the bottommost ends are connected onto the base plate, a sliding rail is arranged on the bottom plate, the top end of the sliding plate is hinged and fixed with the base plate, the bottom end of the sliding plate is erected on the sliding rail to form a structure obliquely downwards towards the surrounding rocks, the sliding plate is connected with a spring, and a stop plate is arranged below the base plate and is connected and fixed with the spring.
7. The supporting and protecting structure for preventing surrounding rocks from falling at a mine stope port according to claim 1, wherein connecting lugs matched with each other are arranged on two sides of the protection plates, and the adjacent protection plates are in butt joint through the connecting lugs and are in hinged connection through bolts.
8. The supporting and protecting structure for preventing surrounding rocks from falling at a mine stope port according to claim 1, wherein the detection line is a thin steel wire, and the thin steel wire is connected to the tail ends of the two adjusting rods through adjusting screws and is close to the front face of the protecting plate.

Description

Supporting and protecting structure for preventing surrounding rock from falling at mine stope port Technical Field The utility model relates to the technical field of supporting protection devices, in particular to a supporting protection structure which is mainly used for preventing surrounding rocks from falling off at a stope of an underground mine. Background In mining operations such as underground mining, as mining activities continue to advance, the stress balance of the raw rock around the stope is destroyed, and the ground pressure activities frequently occur. The two sides of the stope entrance are positioned in the transition area between the stope and the outside, so that the ground pressure distribution is very uneven, and the stress concentration is very easy to form. The blasting tunneling has generated certain destruction to the surrounding rock, and when the process of concentrated stress rebalancing reaches a certain degree, crack expansion and deformation of the surrounding rock can occur to aggravate to form a broken body, so that the surrounding rock cut by the cracks is easy to be unstable and drop under the action of external forces such as mechanical vibration, blasting vibration and the like. If the area is in a broken zone or surrounding rock, crack filling is easy to weaken by water and the like, the situation is more serious, which forms a great threat to personnel and mechanical safety and seriously hinders the normal construction progress. The traditional protection mode is difficult to balance the cost and effectively solve the problem that surrounding rocks at the stope mouth drop, and the defects of complex structure, high cost, difficult construction, poor protection effect, incapability of real-time monitoring and the like exist. Disclosure of Invention Aiming at the defects existing in the prior art, the utility model provides the supporting and protecting structure for preventing surrounding rocks from falling at the stope port of the mine, which has the advantages of simpler structure, more convenient construction, lower cost and real-time monitoring function. The technical scheme is that the supporting and protecting structure for preventing surrounding rocks from falling at a mine stope comprises protecting plates, wherein the protecting plates are connected with anchor rods, the anchor rods are movably connected with the protecting plates, a plurality of protecting plates are respectively inserted into the surrounding rocks to realize installation and fixation, adjacent protecting plates are movably connected with each other to form an arch state along the inner walls of the surrounding rocks, at least two swinging adjusting rods are inserted into each protecting plate, the front ends of the adjusting rods are connected with swinging gaskets, the inner walls of the surrounding rocks are tightly adhered through the gaskets, and a detection line is connected between each two adjusting rods to form a detection mechanism for deformation of the surrounding rocks. The protection plate is of a three-layer structure, the front face is a panel, the back face is a back plate, an intermediate layer is arranged between the panel and the back plate, the thickness of the intermediate layer is larger than that of the panel and the back plate, the panel and the back plate are both hard plates, and the intermediate layer is of an elastic honeycomb structure. Further, the aperture of the hole in the protection plate for penetrating the adjusting rod is slightly larger than the diameter of the adjusting rod, so that the adjusting rod can swing in a small range, a gasket is fixed on the adjusting rod, and the protection plate is clamped by the gasket to form a retaining structure of the adjusting rod. Further, the anchor rods are connected with the protection plates in a hinged mode, the hinged positions are arranged at the middle part of the back plate of the protection plates, and the anchor rods are obliquely upwards inserted into surrounding rocks to form a hanging structure of the protection plates. Further, the gasket and the adjusting rod are pivoted and fixed through the movable shaft, and the surface of the gasket facing the surrounding rock is fully distributed with spike structures. Further, the protection plates at the bottommost ends of the two sides are connected with a buffer mechanism, the buffer mechanism comprises a bottom plate, a base plate and a sliding plate, the bottom plate is installed on the ground and inserted into surrounding rocks, the base plate is obliquely and upwards movably installed on the bottom plate towards the surrounding rocks and forms an included angle with the bottom plate, the protection plates at the bottommost ends are connected onto the base plate, a sliding rail is arranged on the bottom plate, the top end of the sliding plate is hinged and fixed with the base plate, the bottom end of the sliding plate is erected on the sliding rail to fo