摘要
随着浅层煤炭资源的枯竭及开采技术的进步,煤矿开采深度不断提升,同时造成了煤层底板含水层结构的破坏,为保证煤矿安全生产及井下人员的生命安全,底板承压水害的致灾机理亟待研究。本文对底板岩层破坏规律进行数学分析,并在此基础上运用数值模拟方法对煤峪口矿某工作面的地质参数进行分析,仿真得出不同采掘深度的垂直应力及垂直位移曲线,同时得出最大推进深度底板塑性变形分布规律,根据仿真分析结果,得出了易发突水区域为采掘工作面煤壁附近的结论;同时根据本文研究分析,得出了煤层底板承压水害致灾机理。
With the depletion of shallow coal resources and the advancement of mining technology,the mining depth of coal mine is constantly increasing,and the aquifer structure in coal seam floor is destroyed.In order to ensure the safety of coal mine production and the life safety of underground personnel,the disaster-causing mechanism of confined water hazard on the floor needs to be studied urgently.In this paper,the failure law of floor strata is analyzed mathematically,and on this basis,the geological parameters of a working face in Meiyukou Mine are analyzed by numerical simulation method.The vertical stress and vertical displacement curves of different mining depths are obtained by simulation.At the same time,the distribution law of plastic deformation of floor with maximum advancing depth is obtained.According to the results of simulation analysis,it is concluded that the area prone to water inrush is near the coal wall of the mining face.At the same time,according to the research and analysis of this paper,the mechanism of confined water hazard on the coal floor is obtained.
作者
范丽芳
Fan Lifang(Meiyukou Mine of Tongmei Group,Shanxi,037041)
出处
《当代化工研究》
2020年第1期131-132,共2页
Modern Chemical Research
关键词
数值模型
煤层底板
承压水害
numerical model
coal seam floor
confined water hazard
