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Kerve-free sublevel filling mining method

A filling mining method and slotting technology, which is applied in the direction of filling, ground mining, mining equipment, etc., can solve problems such as the collapse of the stope roof and surrounding rock of the hanging wall, etc., so as to reduce the stope mining cycle and save Working time, effect of preventing collapse

Active Publication Date: 2015-03-25
NORTHWEST RES INST OF MINING & METALLURGY INST
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Problems solved by technology

[0003] Aiming at the collapse of the stope and the problem that the roof of the stope and the surrounding rock of the hanging wall cannot be effectively solved after adopting the pre-control roof technology, the present invention provides a mining method for segmental filling without pulling the groove

Method used

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  • Kerve-free sublevel filling mining method
  • Kerve-free sublevel filling mining method
  • Kerve-free sublevel filling mining method

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Embodiment Construction

[0032] Test location: in the 684m section of the 650-700m middle section of a copper mine. The surrounding rocks of the hanging wall are mainly tuff, and the lithology is relatively poor. The surrounding rocks of the footwall are mainly basalt, and tuff is partially reproduced. Folds and fractures are developed in the area, and the ore bodies are controlled by geological structures, and joints and fissures are extremely developed, resulting in extremely broken ore rocks. In the early stage of the mine, the mining method was adopted in the segmented rock drilling stage and then filled. The mining sequence of the mines was from the hanging wall to the footwall. With the increase of time, large-scale collapses of the hanging wall and roof of the mine house often occur, especially the collapse of the surrounding rocks of the upper wall. Sometimes even the surrounding rocks of the hanging wall are not completely exposed, and the stope collapses. It fills the entire goaf, making it...

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Abstract

The invention provides a kerve-free sublevel filling mining method. The kerve-free sublevel filling mining method specifically comprises the following steps: dividing sublevel chambers and splitting ore blocks, carrying out mining preparation and cutting engineering arrangement, carrying out kerve explosion, firstly carrying out extraction and filling operation of splitting ore blocks, carrying out extrusion groove explosion to form a cutting groove during extraction of adjacent ore blocks, utilizing a compensation space formed by extrusion explosion to carry out normal explosion extraction operation, after the extraction of a second splitting ore block, entering the next adjacent splitting ore block, forming the cutting groove through extrusion groove explosion, carrying out extraction, and cycling the extraction process of the adjacent ore blocks. Kerve-free explosion is adopted from the second splitting ore to form a stope cutting groove; compared with a normal cutting kerve method, the engineering of cutting a level and cutting a dooryard is eliminated, the operating time is reduced, the stope extraction period is reduced, the mining operation cost is reduced, the stope labor efficiency is improved, the method is suitable for mining ore deposits with poor stability of surrounding rock, and stope top base plate and hanging side surrounding rock collapse can be effectively controlled.

Description

technical field [0001] The invention relates to a filling mining method, in particular to a trench-free blasting technology and a mining process of a mining method. Background technique [0002] The mining technical conditions of a certain copper mine are complicated. The ore is mainly massive copper ore with good integrity and relatively hard lithology. The surrounding rock of the hanging wall is mainly tuff with poor lithology. tuff. Folds and fractures are developed in the area, and the ore body is controlled by geological structure, and joints and fissures are extremely developed, resulting in extremely broken ores. Scattered structures and fractured rock formations formed by folds and structural fissure-intensive zones generated by tectonic activities and interlayer fracture zones are the main factors affecting the stability of orebody surrounding rocks, which belong to rock masses with extremely poor engineering geological conditions. The mine adopts the method of fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22E21F15/00
CPCE21C41/22E21F15/00
Inventor 何良军高忠郭生茂陈小平刘武团焦满岱赵文奇秦剑伟党洁
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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