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Fully-segmented presplitting squeezing primary-blasting mining method

A mining method and stope technology, which is applied in the field of fully segmented pre-splitting and extrusion blasting mining method of gently inclined thick and large broken ore bodies, can solve the problems of mutual interference in production, small production capacity, low labor efficiency, etc., and achieve the goal of mining The effect of short time, large production capacity and low labor intensity

Inactive Publication Date: 2011-08-17
CENT SOUTH UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In view of the shortcomings and shortcomings of the upward horizontal filling mining method for thick and broken ore bodies, such as mutual interference in production, difficult ventilation, low labor efficiency, small production capacity, and poor safety, the traditional filling mining method has been reformed and technologically innovated. Creatively proposed the mining method of fully segmented pre-splitting and one-time blasting, so as to realize the safe, efficient and low-cost mining of gently inclined thick and broken low-grade ore bodies under the premise of safe mining

Method used

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Embodiment approach

[0036] ①. The ore body is divided into stopes along the strike, and the stopes are arranged vertically. The length of the stope is the thickness of the ore body, and the width is 7-9m. It is divided into the middle section along the vertical direction. The middle section is 50m high, and the middle section is divided into subsections , with a segment height of 10m, and segmental mining from bottom to top; the stope without bottom structure adopts the trackless mining method of segmented roadway 4 outside the footwall and concentrated chute 2, and the segmented roadway 4 is arranged parallel to the boundary of the footwall of the ore body , each segmented roadway is connected with the main ramp through the segmented connecting roadway, the stope is connected with the segmented roadway through the stope connecting roadway, and the centralized chute 2 is connected with the segmented roadway 4 through the chute connecting roadway 3, as figure 1 , figure 2 and image 3 shown.

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Abstract

The invention discloses a fully-segmented presplitting squeezing primary-blasting mining method. The method comprises the following steps of: 1, performing sublevel mining on slowly inclined thick and large crushed ore bodies; 2, arranging a stope free with a bottom structure along a direction vertical to the direction of the ore bodies; 3, using a trackless development mode of a lower plate outside-vein sublevel tunnel and an outside-vein concentrated winze; 4, constructing a full-section pre-control top tunnel serving as a shoring tunnel and a drilling tunnel; 5, performing presplit blasting so as to form the outline of the stope, squeezing and blasting so as to form a mine, and performing presplitting, squeezing and primary-blasting on the fully-segmented ore bodies to form the mine; 6, concentratively removing the ore by trackless equipment under a fully-segmented open stope; and 7, concentratively filling in a large scale after full segmentation. The method has the remarkable characteristics of high mining safety, simple process, low loss and depletion, high mechanical degree and mining strength, high production capability of the stope, high efficiency, low cost, low labor intensity and the like.

Description

technical field [0001] The invention relates to a blasting mining method, in particular to a blasting mining method with fully segmental pre-splitting and extrusion of a gently inclined thick and large broken ore body. The method is mainly suitable for mechanized mining of metal deposits with thick and broken ore body, low grade, large production capacity, high efficiency and low cost. technical background [0002] The filling mining method has a high ore recovery rate and a small exposed area of ​​the roof. It is especially suitable for the mining of unstable and complex ore bodies and has become the preferred mining method for thick and broken ore bodies. With the continuous progress and development of science and technology, the filling mining method has realized the mechanized mining and filling of the stope. The original weakness of low production, low efficiency and high labor intensity has gradually evolved into a modern mining method with high production, high effici...

Claims

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Application Information

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IPC IPC(8): E21C41/22F42D3/04E21F15/00E21D21/00
Inventor 李夕兵李启月王树海范作鹏赵国彦毕洪涛王卫华
Owner CENT SOUTH UNIV
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