Analysis of influencing factors on self-healing of mining-induced overlying rock fissures in coal mine
Under certain conditions,there is a phenomenon of'self-repair'in the cracks produced by the overburden failure caused by coal seam mining in mine.In order to clarify the interaction of various influencing factors in the self-healing mechanism of overburden rock fractures,the influencing factors of self-healing of overburden rock fractures were systematically analyzed based on the relevant experimental data and theoretical research of mine production.It was found that the influencing factors mainly included the lithology and mineral composition of the overburden rock itself,buried depth,hydrological conditions,mining parameters,repair time and temperature after the cracks were generated.The self-healing effects of different influencing factors on overburden fractures were compared and analyzed,and the hierarchical evaluation index system of influencing factors was preliminarily established,in order to provide positive help for other experimental studies on self-healing of mining-induced rock fractures in the future.
overburden rock fissuresself-repairinfluencing factorsindex system
万方数据
维普
