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褶皱等地质构造造成的开采区域应力分布的非均匀性及局部应力集中对工作面回采时的微震活动有重要的影响。分析研究工作面经过褶皱时的微震活动规律有利于揭示矿山微震发生的机理和预防冲击矿压的发生。介绍了前人研究的褶皱区原岩应力场分布情况,并结合山寨煤矿1103工作面的地质概况简介其内部小褶皱的应力场分布情况,然后利用波兰SOS微震监测系统监测的微震数据,研究了以下3方面的内容:向斜、翼部和背斜部位的微震分布与褶皱区应力状态的关系;E4能级以下微震活动与褶皱区应力水平的对应关系;褶皱构造对微震超前距离的影响。
The heterogeneity of stress distribution and local stress concentration in the mining area caused by the geological structure such as the fold and the fold have an important influence on the microseismic activity during the mining face mining. Analyzing the microseismic activity of the working face after folding is helpful to reveal the mechanism of mine microseismicity and prevent the occurrence of rock burst. This paper introduces the distribution of the stress field of the original rock in the fold area of the predecessor. Based on the geology overview of the 1103 face of the Shaozhaicang Mine, the stress field distribution of the small folds inside is introduced briefly. Then the microseismic data monitored by the SOS microseismic monitoring system in Poland are studied The following three aspects are as follows: the microseismic distribution of syncline, wing and anticline, and stress state in fold zone; the corresponding relationship between microseismic activity and stress level in fold zone under E4 level; and the effect of fold structure on microseismic advance distance.