摘要
通过数值模拟和现场实测的方法,研究了司马矿薄基岩厚煤层开采条件下,保证安全开采的极限基岩厚度。数值模拟研究结果表明,在表土全为砂土情况下,保证安全开采的极限基岩厚度为40 m;在基岩厚度20 m粘土厚度40 m时两者可形成较为稳定的结构,极限基岩厚度为20 m;研究结果在司马矿1101工作面的开采试验中得到了验证。
Through the way of numerical simulation and locale measurement, we found the safety utmost bedrock ply at the condition of thin bedrock and thick coal seam in Sima Coal Mine. This result indicated that the safety mining utmost bedrock ply were 40m when surface soil are all sand soil and utmost bedrock ply were 20m when the bedrock＇ply are 20m and clay are 40m. This result were validated at the mining experiment in Sima Coal Mine 1101 working face.
出处
《煤》
2007年第3期4-6,51,共4页
Coal
关键词
薄基岩
极限基岩厚度
粘土
支承压力
厚煤层
thin bedrock
utmost bedrock ply
clay
abutment pressure
thick coal seam
