A mining method for inclined medium-thick metal ore body

A mining method and technology for thick metal, applied in surface mining, underground mining, special mining, etc., can solve the problems of ore body dilution loss, etc., and achieve the effect of improving blasting effect, uniform arrangement of hole network parameters, and improving technical and economic indicators
CN108442930BInactive Publication Date: 2019-10-11CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2019-10-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a mining method for an inclined medium-thick metal ore body. The mining method comprises the steps of mining field division, pulse outer lane construction, ore-drawing and rock-drilling cross level construction, cutting groove construction, pre-control roof support, rock drilling and ore break down, ventilation, ore removal and gob area filling. According to the mining method for the inclined medium-thick metal ore body, each of mining fields is divided into an upper triangular ore body and a lower triangular ore body along the central position of the ore body trend forstoping, and the mining fields adopt a form of one-mining and one-pass and filling in time, so that the range of an empty field is effectively reduced in the stoping process, anchor rods are used forpre-controlling roofs of the mining fields to strengthen the support strength and reduce the collapse of the roof ore body, and the safety of job execution is fully ensured; and at the same time, rock drilling chambers are formed to transform drilling rock from fan-shaped middle-length holes in rock drilling roadways into vertical middle-length holes in the rock drilling chambers, rock drilling is facilitated and rock drilling efficiency is improved, parameters of the blast hole network are evenly arranged, the blasting effect is improved, and technical and economic indicators and the ventilation effect of the mining fields are greatly improved.
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Description

Technical field

[0001] The invention belongs to the field of mining engineering and relates to a method for mining inclined medium-thick metal ore bodies in underground metal mines. Background technique

[0002] Inclined medium-thick ore bodies in my country (inclination angle 30-55°, ore body thickness 4-10-15m) are relatively difficult to recover in low-grade and high-efficiency mining, and occupy a large proportion in metal and non-metal mines. For ore bodies with relatively high ore value and grade in foreign countries, more costly filling methods are used for mining. Most domestic ore values ​​and grades are not high, and the segmented empty field method, explosive transportation method, and approach filling are mostly used. Method, sub-caving method without sill pillar, etc. However, due to the special occurrence of the ore body, the dilution loss during the mining process is serious, and the mining method is difficult to choose, the stope is high, the collapse and ore tra...

Claims

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