Mining support method for steeply inclined and extremely thin ore bodies

An extremely thin mine and steeply inclined technology, which is applied in ground mining, mining equipment, underground mining, etc., can solve the problem that the support efficiency has not been greatly improved, the ground pressure cannot be completely solved, and it is inconvenient for construction personnel to recover. and other issues, to achieve the effects of stope mining safety guarantee, support effect improvement, strength and stability
CN111425205BActive Publication Date: 2021-08-10CHINA MINMETALS CHANGSHA MINING RES INST
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA MINMETALS CHANGSHA MINING RES INST
Publication Date
2021-08-10

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Abstract

The invention provides a mining support method for a sharply inclined extremely thin ore body. The ore body adopts the upward horizontal layered filling method for back mining, and the mining support method of the steeply inclined extremely thin ore body adopts a combined support process of overall ground pressure control and stope working face maintenance. Use the joint support technology of anchor rod, anchor cable and steel belt to carry out the roof support operation; adopt the joint support technology of double ribs and anchor rod to carry out the hanging wall support operation; Operation and footwall waste rock filling operation, carry out the upward mining operation of the next cycle, to ensure that the construction personnel are always working under the support body. And during the mining process, horizontal concrete pillars and vertical concrete pillars with preset intervals are respectively poured along the upward mining direction and the direction of the mining operation face to complete the overall ground pressure control. The invention adopts the support method of overall-local double control, which improves the support efficiency and ensures the mining safety of the stope at the same time.
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Description

technical field

[0001] The invention relates to the technical field of mining support, in particular to a mining support method for a steeply inclined extremely thin ore body. Background technique

[0002] Extremely thin inclined and sharply inclined broken ore bodies, the ore-rock boundary is obvious, the surrounding rock joints and fissures in the hanging wall are developed, in the form of massive and fragmented blocks, local invisible joints are developed, and there are generally soil layers between the ore bodies, and the footwall The development of joint fissures is not obvious, and it is a stable rock formation. At present, due to the small scale of the ore body and the rapid mining depth reduction of the steeply inclined thin veins, the development and mining workload is heavy. At present, the main technical difficulties faced in the mining are: 1) When the extremely thin and sharply inclined broken ore body is mined by the wall-cutting filling method, the stope spac...

Claims

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