Research on the rational staggered distance between joint mining faces in close distance coal seams

Zhen Yuan; Yueqi Sun; Longjie Fu; Wenjing Li; Liqiang Xu; Weiwei Sun; Bingshu Li; Mengjin Gao

doi:10.1117/12.3035534

10 July 2024 Research on the rational staggered distance between joint mining faces in close distance coal seams

Zhen Yuan, Yueqi Sun, Longjie Fu, Wenjing Li, Liqiang Xu, Weiwei Sun, Bingshu Li, Mengjin Gao

Proceedings Volume 13223, Fifth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2024); 132230F (2024) https://doi.org/10.1117/12.3035534
Event: 2024 5th International Conference on Geology, Mapping and Remote Sensing (ICGMRS 2024), 2024, Wuhan, China

Abstract

In view of the irrational mining and low safety associated with joint mining in close distance coal seams, the rational staggered distance between working faces of the upper and lower coal seams during joint mining in close distance coal seams is explored in the geological context of coal 12 and 13^upper in Jinbao Coal Mine, Northwest China. Stable pressure zone (SPZ) mining and reduced pressure zone (RPZ) mining are studied using theoretical analysis and numerical simulation. Through calculations for SPZ mining and RPZ mining, it is determined that for joint mining in close distance coal seams, the safe staggered distance between working faces is 25.93–31.93 m. Numerical simulation of SPZ and RPZ mining methods based on Universal Distant Element Code (UDEC) shows that 25–45 m is the rational staggered distance between joint mining faces in close distance coal seams and it guarantees high mining safety. The numerical simulation result is basically consistent with theoretical analysis. This finding can provide useful reference for mining operation in coal seams with similar geological conditions.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhen Yuan, Yueqi Sun, Longjie Fu, Wenjing Li, Liqiang Xu, Weiwei Sun, Bingshu Li, and Mengjin Gao "Research on the rational staggered distance between joint mining faces in close distance coal seams", Proc. SPIE 13223, Fifth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2024), 132230F (10 July 2024); https://doi.org/10.1117/12.3035534

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