Medium-length hole shrinkage stoping method

A mining method and mining method technology, which is applied in ground mining, underground mining, special mining, etc., can solve the problems of large mining and cutting engineering, high mining cost, and low production efficiency, and achieve the reduction of mining and cutting engineering and reduce production costs. The effect of low and high drilling efficiency

Inactive Publication Date: 2015-11-11
CHINA NERIN ENG
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Problems solved by technology

The segmented open field method and the segmented caving method use medium and deep hole rock drills to drill rock, and each segment

Method used

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  • Medium-length hole shrinkage stoping method
  • Medium-length hole shrinkage stoping method

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Embodiment

[0014] The specific implementation process of the deep hole ore retention mining method of the present invention is as follows, and for specific implementation methods please refer to figure 1 and figure 2 .

[0015] (1) First divide the ore body into a mine room every 50m, the end of the mine room is 5m as a column, and a 5m high column is reserved at the top;

[0016] (2) In the ore exit connecting road, excavate the ore body every 10m to reach the ore body, and then use shallow hole rock drilling and blasting along the full thickness of the ore body to form the bottom of the ore body in the ore exit road, and pull the bottom The height can meet the rock drilling requirements of the YGZ90 rock drill; excavate a pedestrian ventilation patio in the inter-column at the end of the mine house, and then excavate a segmented connecting road every 10-15m (the height of the segmented rock drilling) in the patio as a segmented rock drilling The channel through which personnel, equi...

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Abstract

The invention provides a medium-length hole shrinkage stoping method. Stope preparation engineering comprises a ventilation way shaft, a segmented contact way, an ore drawing contact way, an extracted ore drift and a stope drift; personnel and equipment enter a working site through the ventilation way shaft and the segmented contact way; during recovery, a YGZ90 drilling machine is used for drilling upward fan-shaped blast holes along the height direction of a stope room; blasting recovery is performed from bottom to top one by one in a segmented manner; 'local ore drawing' is carried out after blasting is finished; and after flat fielding, a recovery work face has space with the size of 3m so as to meet requirements of rock drilling, then next blasting recovery operation cycle is performed until blasting recovery of the stope room is finished, and a large number of ores are discharged. The medium-length hole shrinkage stoping method has the advantage of small mining and development engineering amount of a shallow-hole shrinkage mining method and the advantage of high production efficiency of a sublevel open stop mining method, and has quite high reference and popularization significance on recovery of medium thick ore bodies in domestic mines.

Description

technical field [0001] The invention relates to a medium-deep hole ore retention mining method, in particular to a novel medium-deep hole ore retention mining method for rock drilling with a medium-deep hole rock drill, and belongs to the field of mining technology. Background technique [0002] For steeply inclined medium-thick ore bodies with low value, mines generally adopt mining methods such as segmented empty field method and segmented caving method, and a few mines also adopt shallow hole retention method. The segmented open field method and the segmented caving method use medium and deep hole rock drills to drill rock, and each segmented rock drilling roadway and related contact roads need to be excavated. Hole drills are used for rock drilling, and the production efficiency is low. The present invention proposes a medium-deep hole ore retention mining method. Personnel and equipment enter the stope through pedestrian ventilation patios and sectioned connecting road...

Claims

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Application Information

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IPC IPC(8): E21C41/16
Inventor 苑雪超门建兵樊忠华
Owner CHINA NERIN ENG
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