Studding recovery method for reconstructing covering layer through dead zone wastefill and top surrounding rock spallation collaboratively

A recovery method and overburden technology, which is applied in earth square drilling, ground mining, underground mining, etc., can solve the problems of high ore loss rate and large exposed area of ​​goaf, and achieve strong adaptability, flexibility, and layout The effect of flexible mining methods and mining techniques

Active Publication Date: 2017-03-22
GUANGXI UNIV
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Problems solved by technology

It can overcome the disadvantages of excessively large exposed area of ​​goaf and high ore loss rate caused by conventional recovery methods in the recovery of studs, reduce the exposed a

Method used

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  • Studding recovery method for reconstructing covering layer through dead zone wastefill and top surrounding rock spallation collaboratively
  • Studding recovery method for reconstructing covering layer through dead zone wastefill and top surrounding rock spallation collaboratively
  • Studding recovery method for reconstructing covering layer through dead zone wastefill and top surrounding rock spallation collaboratively

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Embodiment Construction

[0029] The technical solutions of the present invention will be further described below through the accompanying drawings and embodiments.

[0030] Such as figure 1 , figure 2 and image 3 As shown, the space column recovery method of the waste rock filling in the empty space and the collapse of the top surrounding rock in cooperation with the reconstruction of the covering layer according to the present invention comprises the following steps:

[0031] (1) Divide the ore bodies with moderately stable surrounding rocks, medium-thick-extremely-thick ore bodies with gentle slopes or steeply-inclined thick-extreme thick ore bodies along the strike, and the ore blocks are divided into ore rooms and pillars, and the mining of the ore rooms is completed Finally, the remaining intercolumns are 50m long, 15m high, and the width is the thickness of the ore body, and the intercolumns are layered according to each layer of 10-15m.

[0032] (2) if figure 1 As shown, after filling the...

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Abstract

Provided is a studding recovery method for reconstructing a covering layer through dead zone wastefill and top surrounding rock spallation collaboratively. The method comprises the specific steps that after waste rock is exploited out from a chamber and a top column through an open-stope method, a goaf is filled with the waste rock to reach a certain height, surrounding rock at the top of a studding is collapsed off once, and the studding covering layer is reconstructed collaboratively; the studding is divided into a plurality of layers, and a drilling drift is tunneled in the center of the bottom of the layers; an end non-through cutting groove is formed in the tail end of the drilling drift through a cutting courtyard slot broaching method; the cutting groove serves as the ore breaking free face, and the studding is subjected to sequential top-to-bottom interlamination advance and in-layers retreating type recovery; and broken ore is shoveled to a winze through a scooptram and is conveyed to the surface of the earth by an ore pocket through an electric locomotive. The invention first provides the method for collaboratively reconstructing the studding covering layer, the safety of studding recovery is improved, and the ore recovery rate is increased effectively.

Description

technical field [0001] The invention relates to a method for recovering inter-pillars in underground mining of metal mines, in particular to a method for recovering inter-columns in which waste rock filling in empty areas and surrounding rock caving at the top cooperate to recreate the overburden, and are suitable for surrounding rocks that are more than moderately stable and horizontally inclined Recovery of pillars left by open-field mining of thick-extremely thick ore bodies or steeply inclined thick-extremely thick ore bodies. Background technique [0002] The guiding ideology of the open-pit mining method is to divide the ore block into a mine room and a pillar, and recover it in two steps. For the surrounding rocks with moderately stable surrounding rocks, medium-thick-extremely-thick orebodies with gentle inclines or steeply-inclined thick-extremely thick orebodies, the conventional recovery methods are mainly layered caving method, mass caving method, and medium-thic...

Claims

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Application Information

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IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 陈庆发蒋腾龙胡华瑞尹庭昌张绍国陈德炎潘桂海
Owner GUANGXI UNIV
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