摘要
近直立特厚煤层采空区坚硬顶板及岩柱失稳严重制约着水平分段综放工作面的安全生产。随着水平分段工作面向深部延伸,采空区空间尺度增大,在开采过程中容易形成大面积悬顶,给工作面安全生产带来隐患。通过理论计算、数值模拟及现场试验,结果表明注水效果显著。
As the horizontal section work faces to deep extension and goaf spatial scale increases, which is easy to form a large overhang in the process of mining, brings to the working face of production safety hidden trouble. Through the theoretical calculation, numerical simulation and field test, the results show that after water flooding effect is remarkable.
出处
《煤炭技术》
北大核心
2017年第12期151-153,共3页
Coal Technology
基金
自治区科技计划项目(201432102)
关键词
近直立特厚煤层
坚硬顶板
注水弱化
nearly vertical ultra thick seam
hard roof
water injection weaken.
