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Double buffering protecting method for mine draw shaft wall

A double buffering and shaft wall technology, which is applied in the double buffering protection of mine chute shaft wall and open-pit mine transportation system, can solve the problems of buffer pit floor wear and poor chute stability, and achieve the effects of nut protection, convenient construction and simple structure

Inactive Publication Date: 2017-06-13
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flexible reinforcement is to set a buffer pit at the collision position to avoid direct damage to the shaft wall by the ore, but the bottom plate of the buffer pit is severely worn and the stability of the chute is poor

Method used

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  • Double buffering protecting method for mine draw shaft wall
  • Double buffering protecting method for mine draw shaft wall
  • Double buffering protecting method for mine draw shaft wall

Examples

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Embodiment Construction

[0032] The invention will be further described in detail below in conjunction with the examples, but the embodiments of the invention are not limited thereto.

[0033] The double buffering protection method for the shaft wall of the mine shaft provided by the present invention specifically includes: determining the range where the ore collides with the shaft wall for the first time; carrying out side expansion excavation on the collision position of the shaft wall to form a step; Anchor rods are pre-embedded on the slope, and the ends of the anchor rods are threaded; hard polyurethane foam boards and manganese steel plates with grids are respectively arranged on the platform surface of the steps and the slope surface, as a flexible buffer layer and wear-resistant layer, ensuring that each There are anchor rods in the grid; the rigid polyurethane foam board and the manganese steel plate with grid are fixed with nuts, and a certain prestress is applied.

[0034] The specific ste...

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Abstract

The invention discloses a double buffering protection method for the shaft wall of a mine chute, specifically: determining the range where the ore collides with the shaft wall for the first time; performing side expansion excavation on the collision position of the shaft wall to form a step; Anchor rods are pre-embedded on the surface and slope, and the ends of the anchor rods are threaded; hard polyurethane foam boards and manganese steel plates with grids are respectively installed on the platform and slope surfaces of the steps, as a flexible buffer layer and wear-resistant layer, ensuring There are anchor rods in each grid; rigid polyurethane foam panels and manganese steel plates with grids are fixed and prestressed with nuts. The invention can solve the problems of wear and collapse of the shaft wall of the chute, and has the advantages of simple structure, convenient construction and no need for follow-up maintenance.

Description

technical field [0001] The invention relates to a method for protecting the shaft wall of a chute, in particular to a double buffer protection method for the shaft wall of a mine chute. Suitable for surface mine transportation system. Background technique [0002] For open-pit mines with large height differences, the use of shafts to transport ore can not only shorten the transportation time, but also save transportation costs. However, the service life of the chute is generally long, and under the long-term impact of the ore, the phenomenon of shaft wall damage and collapse will gradually appear, and seriously affect the normal production of the mine. According to the nature of the movement of the ore, the unloaded ore rolls along the chute, then falls into the chute and collides with the shaft wall for the first time, and the range of the collision position is fixed. At the same time, during the first collision, the damage caused by the ore is the largest, and the collis...

Claims

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Application Information

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IPC IPC(8): E21F13/04
CPCE21F13/04
Inventor 叶海旺赵昀雷涛龙梅李宁王其洲潘俊锋
Owner WUHAN UNIV OF TECH
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