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

Inactive Publication Date: 2019-10-11
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a safe and efficient mining method for inclined medium-thick metal ore bodies in view of the safety problems existing in the mining process of the existing inclined medium-thick ore bodies and the serious loss of ore body dilution

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  • A mining method for inclined medium-thick metal ore body
  • A mining method for inclined medium-thick metal ore body
  • A mining method for inclined medium-thick metal ore body

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Embodiment

[0045] See figure 1 , figure 2 with image 3 , The figure is a schematic diagram of the internal structure of a mining area using a method of mining an inclined medium-thick metal ore body of the present invention. The specific mining implementation steps are as follows:

[0046] Step 1: Division of stope.

[0047] The ore body is divided into the stope along the direction of the ore body. The thickness of the stope is the thickness of the ore body, and the width of the stope is 10-15m. Because the ore body is inclinedly distributed, each stope in each section is close to the upper wall ore body and The footwall ore body is divided into upper triangle ore body and lower triangle ore body.

[0048] In the stope process, the stope is separated from one to the other. The upper triangle ore body is first recovered in the stope. After the empty area of ​​the upper triangle is firmly filled, the lower triangle ore body is recovered. The height of the stage is 40-60m. Section, the sectio...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22
Inventor 陶明马敖刘志祥赵华涛李夕兵宫凤强
Owner CENT SOUTH UNIV
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