摘要
为解决东庞矿下组煤9#煤层薄隔水层底板破坏深度的问题,以9103综放工作面为工程地质背景,采用理论计算和经验公式分析方法确定了底板采动破坏最大深度理论值,同时利用了FLAC3D数值计算软件模拟分析了底板采动破坏深度及其应力分布规律,并在现场实施了预埋钻孔应力传感器及监测,实测了底板采动应力演化特征,其底板破坏深度监测结果与理论计算和模拟分析相吻合,从而验证了使用多种手段研究底板破坏深度的可行性及合理性。
In order to solve the thin aquifuge floor failure depth question at 9# coal seam of lower coal group in Dongpang Coal Mine, taking 9103 fully mechanized caving face as the engineering geological background, the theoretical calculations and empirical formula analysis method are used to determine the maximum depth of the floor failure theory value, while the numerical simulation software FLAC3D is taken to analyze the depth of floor failure stress distribution and implementation in the field of embedded sensors and monitoring borehole stress, measuring mining stress evolution in the floor, and its floor failure depth monitoring results coincide with theoretical calculation and simulation results, which proves the feasibility and reasonableness to use various means to study of floor failure deoth.
出处
《煤矿安全》
CAS
北大核心
2014年第7期26-29,共4页
Safety in Coal Mines
关键词
综放工作面
底板破坏深度
理论计算
数值模拟
现场实测
fully mechanized caving face
depth of floor failure
theoretical calculation
numerical simulation
field application
