A multi-face mining method with full mine filling for high-yield and high-efficiency production

CN117189227BActive Publication Date: 2026-05-26CHINA UNIV OF MINING & TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Filing Date
2023-09-11
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies are insufficient for safe mining of multiple working faces in high-productivity mines, and there are no suitable backfilling mining methods, posing safety hazards. At the same time, they fail to effectively protect water resources and the surface environment in western China.

Method used

The multi-face mining method with full mine filling is adopted to achieve high production and efficiency. By determining the designed mine capacity and the number of working faces, the mining, tunneling and transportation system is optimized, appropriate filling methods such as high-porosity cemented filling are selected, the working face layout and spatiotemporal continuity are optimized, and real-time monitoring and feedback adjustment are carried out to ensure safe production.

Benefits of technology

It has enabled safe mining in high-productivity mines, reduced rock bursts and surface subsidence, protected the environment, and provided a simple, cost-effective, and efficient multi-face mining technology.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a high-yield and efficient multi-face mining method with full mine filling, belonging to the field of mining technology. The method involves determining the number of working faces for simultaneous production based on the mine's designed capacity; optimizing the design of the mining, tunneling, and transportation system across multiple levels and working faces; conducting risk assessments for multi-face filling and mining through theoretical analysis and numerical simulation; determining filling equipment, processes, and design parameters for filling faces based on filling requirements; arranging multi-face mining working faces in multiple coal seams; and verifying and providing feedback on the key parameters and feasibility of adjusting multi-face filling and mining production and the filling system. This invention proposes efficient mining technologies for multi-face mining in single-layer mining areas and multi-face mining in three-dimensional space, along with corresponding efficient filling technologies and equipment. It overcomes the bottleneck of filling mining affecting coal production efficiency, enabling efficient filling mining in mines with a capacity of over ten million tons.
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