摘要
为了保证长沟峪矿向斜轴部倾斜煤层的安全开采,用FLAC2D对工作面推进过程中的煤层应力状态进行工程数值模拟,研究向斜轴部原岩应力状态的变化规律和向斜两翼采空后轴部煤层的应力状态分布规律,结果表明向斜轴部煤层应力状态相对集中,采空区前方煤体存在应力集中区.在对轴部煤层进行开拓采掘时应加强超前支护管理,确保向斜轴部工作面安全生产.
The software FLAC2D was used to simulate the stress of coal seams when the working face was advancing to make sure that the inclined coal seam near the Changgouyu syncline axis can be safely mined. The variation and distribution rule of stress of initial rock near the syncline axis after the coal of both wings had been exploited was studied. The result indicates that the stress of coal seams near the syncline axis is relatively concentrated and there is a stress concentrating area in coal seams in front of the gob. So when the coal seam near the syncline axis is to be exploited, the advanced roof control is needed.
出处
《采矿与安全工程学报》
EI
北大核心
2007年第4期477-480,共4页
Journal of Mining & Safety Engineering
基金
高等学校博士学科点专项科研基金(2004017005)
关键词
煤层应力状态
应力分布规律
FLAC
边界条件
载荷条件
stress of coal seams
distribution rules of stress
FLAC
condition of boundary
condition of load
