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Cutting raise cutting method used in underground mining

A technology of slotting and cutting holes, which is applied in underground mining, ground mining, special mining, etc., can solve problems such as hidden safety hazards for mine workers and reduce mining efficiency, so as to improve mine safety and production efficiency, avoid dangerous operations, The effect of reducing the number of pull slots

Inactive Publication Date: 2014-04-02
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the length of cutting up the mountain is too large, it is necessary to carry out the second or even third grooving. Repeated grooving operations reduce the mining efficiency and bring great safety hazards to the mine staff.

Method used

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  • Cutting raise cutting method used in underground mining
  • Cutting raise cutting method used in underground mining
  • Cutting raise cutting method used in underground mining

Examples

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Embodiment Construction

[0020] The following examples further illustrate the technical solutions of the present invention, which are not intended to limit the protection scope of the present invention.

[0021] refer to figure 1 , 2 As shown in , 3 and 4, the method of cutting uphill for underground mining adopts the combination of graded cutout and straight eye and oblique eye composite cutout, and blasts once with graded charge; wherein, the straight eye cutout hole 4 runs through the entire length of cutting uphill And it is divided into two stages of charging, and the oblique hole 3 is inclined to the blasting plane and extends toward the center hole 1. Cutting with oblique eyes can improve the effect of crushing and throwing movement of ore rock in the groove cavity, and create a good compensation space for the second level of straight eye cutting.

[0022] refer to figure 1 , 2 , Shown in 3,4, above-mentioned scheme, described straight eye cutout is straight eye hole cutout mode. Holes 2 a...

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Abstract

The invention discloses a new cutting raise cutting technology used in underground mining. The technology is characterized by combining step cutting with parallel and oblique composite cutting, charging by steps and delaying primary blasting, wherein a parallel cut hole runs through the whole cutting raise length and is charged by two steps and an oblique cut hole inclines relative to a blasting plane and extends towards a center hole. The technology has the beneficial effects that the cutting raise once cutting length can be greatly increased, the cutting times can be reduced, the mine stoping process can be optimized and hazardous operation of workers under the condition that roofs are quite unstable during repeated cutting can be simultaneously avoided, thus reducing consumption of human and financial resources in the underground mine stope stoping process and improving the mine safety and production benefits.

Description

technical field [0001] The invention belongs to the field of mining engineering, and relates to a new technology for underground mining cutting up a mountain pull channel. Background technique [0002] At present, blasting excavation technology is mainly used in the excavation process of underground non-coal mines. For gently inclined and inclined ore bodies, due to the influence of ore body inclination, the collapsed ore rocks are not easy to slide down, resulting in the effective length of a trough, which in turn affects Efficient production in mines. As far as domestic mines are concerned, the effective length of one flute is mostly between 6 and 10m, and the effective length of one flute is smaller in complex geological environments. When the length of cutting up the mountain is too large, it is necessary to carry out the second or even three times of grooving. Repeated grooving operations reduce the recovery efficiency and bring great potential safety hazards to mine w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16F42D3/00
Inventor 柴修伟姚金蕊余德运赵勇张电吉罗曼李文成马伟杰陈英王智峰
Owner WUHAN INSTITUTE OF TECHNOLOGY
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