Deep hole mining method in steeply inclined thick and large broken ore body

CN122407191APending Publication Date: 2026-07-17XINJIANG YAKESI RESOURCES LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XINJIANG YAKESI RESOURCES LTD
Filing Date
2026-04-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies are insufficient for the efficient and safe mining of steeply inclined, thick, and fractured ore bodies, especially in deep, high-stress environments, which presents challenges such as high construction difficulty, high costs, and high safety risks.

Method used

The deep-hole mining method is adopted, and by designing one-step and two-step stopes with smaller spans, combined with the mining sequence that advances synchronously from the middle to both sides of the ore body, different support systems and composite cushion structures are used, along with micro-differential blasting and differentiated backfilling, to form an integrated mining scheme.

Benefits of technology

It improved the efficiency of ore body mining, reduced construction difficulty and cost, enhanced safety, adapted to the complex geological characteristics of steeply inclined, thick, and fractured ore bodies, and realized large-scale, efficient, and safe mining.

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Abstract

本发明属于采矿工程技术领域,公开了一种急倾斜厚大破碎矿体中深孔采矿法,包括:沿垂直于矿体的走向划分分段且不同跨度的一步骤采场和二步骤采场;按照一、二步骤斜面台阶间隔式同步回采方式回采各分段采场;在各分段的一步骤采场回采前,对凿岩出矿巷道内形成用于二步骤采场回采卸压的复合垫层结构;中段内采场整体采用自中部向矿体两侧同步推进的回采顺序,各分段采场采用一步骤与二步骤斜面台阶间隔式同步回采的方式进行回采;在各分段采场回采前,先爆破形成切割槽,并以切割槽为自由面与补偿空间向后依次爆破;落矿完成后进行出矿作业,根据扫描结果优化支护与爆破参数;本发明降低了中深孔采矿施工难度的问题。
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