Non-notch semi-continuous process combined step mining method

Abstract

The invention provides a non-notch semi-continuous process combined step mining method. The method comprises the following steps of: dividing mining breadths on a region to be mined; numbering the mining breadths, wherein each mining group comprises a first breadth, a second breadth and a third breadth; counting a plurality of mining groups in sequence from left to right; mining the first breadth,the second breadth and the third breadth of the first mining group to a first preset depth, mining the first breadth and the second breadth to a second preset depth, moving a working face belt conveyor to the third breadth of the first mining group, mining the first breadth, the second breadth and the third breadth of the second mining group to the first preset depth, and mining the third breadthof the first mining group and the first breadth and the second breadth of the second mining group to the second preset depth; and repeating the steps. By adopting the method, the system moving limitation during combined step mining is overcome; the moving period can be prolonged effectively, and the mining amount in the moving period is increased; the method is simple and practicable, and has high operability; and the annual moving times of a process system are reduced.

Description

technical field [0001] The invention relates to the technical field of open-pit mining methods, in particular to a semi-continuous process combination step mining method without incisions. Background technique [0002] At present, in the application of self-moving crusher semi-continuous process in my country, although it has the ability to combine bench mining, but from the perspective of relocation cycle and mining efficiency, the existing operation method has the following disadvantages: [0003] 1. The recoverable amount in the relocation cycle is small, which cannot meet the design requirements of "three mining and one relocation"; 2. After the third mining incision is made, the working face belt conveyor needs to be relocated, which affects the system efficiency; 3 , Restricted by the height of the steps, most of them use single-step operations. Contents of the invention [0004] In order to solve the above-mentioned technical problems, the present invention provide...

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Problems solved by technology

[0003] 1. The recoverable amount in the relocation cycle is small, which cannot meet the design requirements of "three mining and one relocation"; 2. After the third mining incision is made, the working face belt conveyor needs to be relocated, which affects the system efficiency; 3 , Restricted by the height of the steps, most of them use single-step operations

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