一种急倾斜厚大矿体盘区式分段充填采矿法

By using the panel-type segmented backfilling mining method, the problems of large amount of preparation work and high risk of roof damage in the mining of steeply inclined thick ore bodies have been solved, achieving safe, efficient and low-cost mining, reducing the amount of auxiliary engineering and improving the backfilling roof connection rate.

CN121047588BActive Publication Date: 2026-07-17CHINA MINMETALS CHANGSHA MINING RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA MINMETALS CHANGSHA MINING RES INST
Filing Date
2025-08-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for mining steeply inclined, thick ore bodies have problems such as large preparation work, long construction period, severe roof collapse and damage, and high mining safety risks. In particular, medium-deep hole blasting is prone to ground pressure manifestation and high roof suspension rate, which affects the filling and roof connection rate and the stability of the mining area.

Method used

The panel-type segmented filling mining method is adopted. The ore body is divided into three levels: middle section, panel, and segment. The first-stage stope and the second-stage pillar stope are arranged alternately perpendicular to the strike of the ore body. The first-stage stope is mined and filled first. Cutting roadways and material unloading channels are formed by using forward blasting. The strength zoning of the filling body is designed, and the filling body is forced to the roof by using the blasting reserved channel. The return air duct is arranged independently to reduce the amount of auxiliary engineering.

Benefits of technology

This approach reduces the amount of preparation work, increases the backfilling and roof connection rate, reduces the risk of roof damage, improves the deep working environment, ensures safe and efficient low-cost mining, and avoids the chain reaction of roof collapse and ground pressure transmission instability.

✦ Generated by Eureka AI based on patent content.

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Abstract

本申请公开了一种急倾斜厚大矿体盘区式分段充填采矿法，属于采矿工程领域，包括：S4、采场回采时，通过爆破同步形成切割巷道和切割槽，在正排爆破落矿时超挖形成下料通道；S5、回采后对空区进行充填，其中，充填阶段采用强度分区设计:底部高强度承载层、中部低强度缓冲层、顶部高强度接顶层，并利用正排爆破预留的下料通道实现充填体强制接顶。通过S4中正排爆破时顶板中央炮孔超深，在崩矿同时形成竖向下料通道，为后续充填提供直达空区顶部的物料输送路径；通过S5中利用爆破预留的下料通道强制灌注料浆填充顶板空隙，使充填接顶率提升，避免未接顶导致的离层垮落；通过S4及S5的协同解决采场回风、顶板损伤与充填接顶问题。
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Citation Information

Patent Citations

  • Open stope subsequent filling mining method for wedge-shaped top pillar segmented rock drilling stage of thick and large ore body

    CN113530542A

  • Panel type cutting roadway two-step sublevel open-stoping subsequent filling mining method

    CN114562266A