Vertical shaft restoration and reinforcement structure and restoration and reinforcement construction method

Abstract

The invention provides a vertical shaft restoration and reinforcement structure and a restoration and reinforcement construction method. The vertical shaft restoration and reinforcement construction method comprises the steps that firstly, surrounding rock in a fractured and water-seepage area inside a vertical shaft is reinforced through anchor rod drilling grouting, and water stopping is conducted on to-be-restored parts; secondly, a plurality of drainage holes are drilled in water-seepage parts, water in the water-seepage parts is introduced into a soil layer under the bottom of the vertical shaft through a drainage system, an annular foundation is constructed on shaft wall surrounding rock meeting the third-level rock mass standard or a complete shaft wall under the to-be-restored parts of the vertical shaft, and a steel plate drum is mounted on the annular foundation; and thirdly, concrete is poured between the steel plate drum and the shaft wall in a filled mode through a vertical concrete conveying pipe to fix the steel plate drum to the inner wall of the vertical shaft. The vertical shaft restoration and reinforcement structure is simple, short in construction period, small in influence on a production line, convenient to construct, replace and repair and suitable for the conditions of vertical shaft blocking and shaft wall collapse.

Description

Technical field [0001] The invention belongs to the cross field of geotechnical engineering and mining engineering, and specifically relates to a novel shaft repair and reinforcement structure and a repair and reinforcement construction method which can well solve the problems of water seepage, collapse and blockage of the shaft wall. Background technique [0002] At present, most domestic mines adopt the mine transportation method of shaft + flat tunnel. As the service life of the shaft increases, the shaft wall lining of the shaft is gradually worn and damaged, causing the original rock to be exposed; under the impact of the impact load of the mine, the shaft wall will become Collapse occurs; in the area of ​​poor shaft wall rock mass, water seepage and other factors are likely to cause the collapse of the area to expand, the situation is serious, it is easy to cause problems such as well blockage, shaft scrapping, etc.; seriously affecting the operation of the production line. ...

AI Technical Summary

Problems solved by technology

[0002] At present, most mines in China use the mine transportation method of shaft + adit. As the service life of the shaft increases, the lining of the shaft wall is gradually worn and damaged, resulting in the exposure of the original rock; under the impact load of mine feeding, the shaft wall will be Collapse occurs; factors such as poor quality of the rock mass on the shaft wall and water seepage can easily cause the scope of the collapse to expand. If the situation is serious, it will easily cause problems such as well blocking and shaft scrapping; seriously affect the operation of the production line

At present, there are few repair and reinforcement technologies for shaft collapse. Generally, after shaft collapse and other problems occur, the site is usually re-selected to build the shaft, and the mine equipment is relocated or updated, causing great economic losses.

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