厚硬顶板破断诱发矿震机制及减震技术

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中图分类号：TD324 文献标志码：A 文章编号：1008-0562（2026）02-0155-09

Abstract：In order to investigate the factors inducing mine seismicity and reduce the frequencyand degree of mine seismicity，this study focuses a coal mine in the Ordosregion.By integrating field evaluation，theoretical analysis，scheme design，in-situ measurement，and industrial-scale testing，the mechanism of mining-induced seismicity triggered by thick-hard rooffracture was analyzed，and acooperative presure-relief and seismicityreduction technology combining“hydraulic fracturing in roadway roof，directional long-hole hydraulic fracturing， and surface deep-hole blasting”was proposed.The research results show that the inducing factors of mininginduced seismicity in thick-hard roof working faces include mining depth，geological structures，lithological variations，advancerate，periodic weighting，etc.When multiple factors overlap，the frequency of mining-induced seismicity increasessignificantly.After implementing the pressure-relief technology，the average periodic weighting interval of the working face was reduced from 17.32m to 14.81m ，adecrease of 14.49% .The monthly frequency of microseismic events increased from 185 to 1902 ，with small-energy microseismic events accounting for 73.2% ，exhibiting a“high-frequency，low-energy”distribution pattern.The pressure-relief and seismicity-reduction technology demonstrated excellent effectivenes，，significantly lowering the risk levelof mining-induced seismicity.Theresearch conclusions provide a reference for mine earthquake control under similar conditions.

Keywords：thick and hard roof；mine seismicity；coordinated pressure relief; pressure relief and shock mitigation; three-dimensional governance

0引言

近年来，中国各大矿区浅部煤炭资源日益枯竭，矿井正以每年 10～25m 的开采强度向深部区域发展[]。（剩余12750字）