摘要
通过分析不同阶段巷道动压的诱因及破坏变形特征表明:留巷掘进期间巷道围岩变形较小,表面位移可控制在100 mm以下;相邻工作面回采期间留巷受力大,变形显著;本工作面回采期间相邻工作面留巷侧形成相对稳定的结构再次受到扰动。并针对12614工作面的动压情况进行数值模拟,得出了煤柱支承压力分布曲线,对巷道的支护和管理提供了理论依据。
The research on deformation characteristics and causes by induced dynamic pressure in different stages show that,the deformation for roadway during tunneling along the goaf is quite small with the surface displacement below 100 mm,while In the adjacent working face goaf stress and roadway deformation are remarkable due to mining.The relatively stable structure in adjacent working face will be challenged again during the mining in local face. Numerical simulation in 12614 working face is carried out for the data collection and distribution chart of coal pillar pressure,which provides a theoretical basis for the support and management of the tunnel.
出处
《山西焦煤科技》
2017年第10期20-22,25,共4页
Shanxi Coking Coal Science & Technology
关键词
留巷
动压
变形特征
数值模拟
Retained roadway
Dynamic pressure
Deformation characteristics
Numerical simulation
