煤炭与化工2025，Vol.48Issue(6)：1-5,35,6.DOI:10.19286/j.cnki.cci.2025.06.001
不同采动速度下煤层顶底板破坏特征分析研究
Analysis and study of failure characteristics of coal seam roof and floor under different mining speeds
杨惠惠 1杨波 1杜龙龙1
作者信息
- 1. 河北煤炭科学研究院有限公司,河北邢台 054000||河北省矿井微震重点实验室,河北邢台 054000
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摘要
Abstract
The purpose of this study was to explore the influence of mining speed on the stress adjustment and fracture behavior of rock strata during coal mining,especially the potential impact on mine safety production in high confined water environment.Taking No.9303 Face of Xipang Well in Dongpang Coal Mine as the research object,based on the microseism monitoring data,the influence of mining speed on the frequency of microseism events,the height of roof fracture and the depth of floor disturbance was analyzed.The results showed that with the increase of mining speed from 1.3 m/d to 3.1 m/d,the total number of microseism events,the number of roof events and the number of floor events increased by 41.67％,60％ and 33.33％ respectively,and the height of roof fracture increased from 41.35 m to 58.75 m,with an increase of 42.1％.The disturbance depth of the bottom plate changed slightly,showing a slight shallowing trend,from 16.21 m to 15.62 m,and the overall shallowing range was 3.64％.The results showed that the mining speed was significantly correlated with the roof rupture height and the frequency of microseism events,and the correlation with the floor disturbance depth was weak,which meant the mining speed had a differential effect on the roof and floor rupture behavior.The study provided a scientific basis for mine water disaster prevention and control.关键词
采动速度/微震监测/顶板破裂高度/底板扰动深度Key words
mining speed/microseism monitoring/roof fracture height/floor disturbance depth分类
矿业与冶金引用本文复制引用
杨惠惠,杨波,杜龙龙..不同采动速度下煤层顶底板破坏特征分析研究[J].煤炭与化工,2025,48(6):1-5,35,6.
