摘要
针对某矿深井厚松散层薄基岩影响区域21406工作面及21203工作面的地质条件以及回采过程中出现的安全问题,采用数值模拟方法,研究了不同推进距离条件下回采工作面通过薄基岩过程中上覆岩层覆岩活动规律、顶板垂直应力分布规律及工作面液压支架受力特征。结果表明,工作面开采过渡区时,厚度越大的基岩,其支架工作阻力越小,工作面顶板下沉量也越小。
In view of the geological conditions for working faces 21406# and 21203# on thick and loose layers of thin bedrock in the deep shall of some mine, as well as the existing safety problem in the stoping process, the overlying strata movement law, the weighting behavior caused by vertical stress of roof and stress characteristics of the hydraulic support on the working face as it passing through thin bedrock with different advancing length were all studied by using numerical simulation. Results showed that when the working face passing through the transition area with bedrock of higher thickness, the support had less working resistance, resulting in less roof subsidence above working face.
作者
张友明
张洋
高林生
ZHANG You-ming;ZHANG Yang;GAO Lin-sheng(Relocation and Recovery Company,Yongcheng Coal Electric Co Ltd,Shangqiu 476600,Henan,China;Chengjiao Coal Mine,Yongcheng Coal Electric Co Ltd,Shangqiu 476600,Henan,China;School of Safety Engineering,North China Institute of Science and Technology,Beijing 010201,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2018年第5期25-28,共4页
Mining and Metallurgical Engineering
基金
河北省高等学校科学技术研究项目(ZC2016046
ZD2016204)
关键词
薄基岩
覆岩活动规律
数值模拟
过渡区域
thin bedrock
behavior of overlying strata movement
numerical simulation
transition area
