【摘要】 三面采空综放采场采动阶段受到高应力作用容易引发冲击地压、顶板大面积来压等动力灾害,通过研究岩层运动与矿压关系,孤岛工作面掘进、回采过程中覆岩空间结构形式及其运动规律,揭示工作面开采初期和开采期间岩层运动诱发动力灾害机理.结合工程实践,基于微震定位监测结果验证三面采空综放采场采动阶段诱发动力灾害规律,揭示应力分布、变化,为治理矿压动力灾害提供理论基础和技术手段.更多还原

【Abstract】 The hazards of rock burst and large roof caving are ease to occur at mining stage in a fully mechanized top coal caving face with goafs in three sides due to high stress.Through the study of strata movement and mine pressure,isolated working face excavation,overlying strata spatial structure and its movement characteristics,it reveals the strata movement induced dynamic disaster mechanism at initial mining stage and during coal mining operation.更多还原