淮南矿区深部煤层采动底板岩层变形破坏测试分析
Test and analysis of deformation and failure of mining-induced floor strata in deep coal seam of Huainan Mining Area
摘要
深部煤层开采过程中,底板岩层在"高地应力、高渗透压、强采动扰动"复合作用下易发生变形破坏,甚至诱发突水灾害.以淮南矿区某矿 21214 深部工作面为背景,综合采用微震监测、钻孔电阻率法和分布式光纤应变传感技术,开展了采动底板岩层变形破坏的多物理场协同测试与分析.综合对比分析认为,21214 工作面 4-2 煤底板采动破坏带深度约 12～14 m,扰动影响带深度约 25 m.多参量协同监测能够有效反映底板岩层变形破坏的演化过程,可为深部煤层底板水害防治提供技术支撑.
During deep coal seam mining,the floor strata are prone to deformation and failure under the combined effects of"high geostress,high seepage pressure,and strong mining disturbance",which may even induce water inrush disasters.Taking the No.21214 deep working face of a mine in Huainan Mining Area as the background,a multi-physics collaborative testing and analysis of mining-induced floor deformation and failure was carried out by comprehensively adopting microseismic monitoring,borehole resistivity method,and distributed fiber optic strain sensing technology.The comprehensive comparative analysis indicates that the mining-induced failure depth of the 4-2 coal seam floor in the No.21214 working face is 12-14 m,and the disturbance-affected depth is approximately 25 m.Multi-parameter collaborative monitoring can effectively reflect the evolution process of floor deformation and failure,providing technical support for water hazard prevention of deep coal seam floors.
年，卷(期)：
2026, 45(10)
分类号：
TD325
机标分类号：
TD325
TD712
P612
在线出版日期：
2026年10月29日
