摘要
为了提升巷道围岩稳定性,以镇城底矿22605工作面为研究背景,利用数值模拟软件对巷道围岩应力应变进行研究。研究发现,原有支护条件下巷道顶板下沉量及巷道煤柱变形量较大,提出采用注浆加固技术,注浆加固后巷道顶板及巷道煤柱帮的变形量得到了有效控制,为沿空留巷稳定性作出一定的贡献。
In order to improve the stability of roadway surrounding rock,this paper used numerical simulation software to study the stress and strain of roadway surrounding rock.It was found that the roadway roof subsidence and roadway pillar deformation are large under the original support conditions.Grouting reinforcement technology is proposed.After grouting reinforcement,the deformation of roadway roof and roadway pillar side was effectively controlled,which contributes to the stability of gob-side entry retaining offer.
作者
苑江龙
YUAN Jiang-long(Zhenchengdi Mine,Xishan Coal and Electricity Group Co.,Ltd.,Taiyuan 030053,China)
出处
《煤炭科技》
2021年第3期22-25,共4页
Coal Science & Technology Magazine
关键词
沿空留巷
煤柱
数值模拟
注浆加固
下沉量
gob-side entry retaining
coal pillar
numerical simulation
grouting reinforcement
subsidence
