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Concrete pole top protection mining method

A mining method and mining method technology, which is applied in the mining field with concrete pillars to protect the roof, can solve the problems of incomplete recovery of ore, large thickness of ore body, etc., and achieve saving of waste transportation costs, safe mining conditions, and good practical value Effect

Inactive Publication Date: 2009-10-21
贵州开磷设计研究院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires the entire mine to adopt a unified mining layout, and the applicable ore body thickness must be large. It is not suitable for ore bodies with a small thickness, and there are still ore pillars left, and the recovery of ore is not very thorough.

Method used

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  • Concrete pole top protection mining method
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  • Concrete pole top protection mining method

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Embodiment

[0023] The basic geological conditions of Guizhou Kailin Group in the northern section of the Jile Mine Section of the Mining Corporation at the level of 824m to 838m and the level of 815m to 824m are: (1) The ore layer (Zbp): mainly dense massive, granular, and fine-grained strips Banded phosphorite, the ore body is stable and layered, with a single structure and brittle ore, with a dip angle of 5°-15° and a thickness of 3-4m. (2) Roof: Direct roof (Zbd3): This layer is also known as "false roof". The lithology is complex and changeable, with mutual defects and extremely unstable. The thickness of this layer is 0-9m, generally 1-4m, very unstable, F=1-4. Indirect roof (Zbdn1): It is the first section of the Dengying Formation, commonly known as "Old Ding", which is gray-white and gray thick-layer fine-grained dolomite, which is 30-35m thick and stable, F=8-10. (3) Floor (Zbd1): The immediate floor of the mine is yellow-gray thin to medium-thick phosphorus-containing sandy do...

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Abstract

The invention discloses a mining method for concrete column roof protection, which belongs to the mining method of installing column roof protection in mines. The mining method includes five processes, namely (1) mining, and excavating along the veins to enter the horizontal roadway in the vein; (2) ) Digging concrete column grooves: in the mining quasi-level road, digging concrete column grooves vertically or according to a certain angle along the ore body inclination at a certain distance; The column adopts the construction technique of close contact between the concrete and the roof of the ore body to ensure the strength of the concrete column; (4) Cutting: excavate vertically in the middle of the ore body between the two concrete ore bodies or along the ore body at a certain angle Necessary space for mining operations; (5) Mining: After cutting and excavating in upper sections, conventional mining techniques can be used for formal mining work. The concrete column mining method of the present invention has the advantages of simple process, easy mastery, convenient management, relatively safe mining conditions and high ore recovery rate, and is suitable for mining ore bodies with relatively stable ore rocks from horizontal to inclined medium thickness.

Description

technical field [0001] The invention relates to a mining method, in particular to a mining method for installing pillars to protect the roof in a mine, especially to a mining method for using concrete pillars to protect the roof. Background technique [0002] Ore is a precious non-renewable resource endowed by nature to human beings. With the increase of human demand for ore resources and continuous mining, ore resources are rapidly decreasing, how to make full use of existing resources has become a problem that people must seriously study. In existing mining methods, it is generally used to reserve ore pillars to support the roof of the ore body. These ore pillars themselves are the ore needed by human beings. Generally, the loss of ore due to the ore pillars is 20% to 40%. %, some even as high as 50%, the amount is quite considerable, if not recovered, it will inevitably cause the loss of resources; and there are many joints and bedding in the ore pillar, and the stabilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22
Inventor 陈发吉龙秀才姚复举
Owner 贵州开磷设计研究院有限责任公司
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