摘要
以磁窑沟煤矿11102运输巷为研究背景对极近距离巷道控制技术进行研究,采用现场调研、 理论分析、 理论计算和数值模拟等研究手段,揭示了磁窑沟矿极近距离巷道失稳机理,针对失稳机理提出极近距离巷道控制方案,通过FLAC3D有限元分析软件对补强支护方案的巷道稳定性进行分析,并对巷道的控制效果进行了现场验证.研究结果表明:11102运输巷采取极近距离巷道补强支护方案后,断面收缩率5.29%,巷道稳定安全.针对巷道失稳机理提出的补强支护方案,满足极近距离巷道的控制要求,断面收缩率保持为5.29%,证明方案合理有效.可以为类似工程地质条件下的巷道支护提供借鉴,具有一定的应用和推广价值.
In order to study the control technology of extremely close roadways,the author takes 11102 transportation roadway in Ciyaogou Coal Mine as the research background,uses theoretical analysis and calculation to analyze the instability mechanism of extremely close roadways,and puts forward corresponding control countermeasures for the instability mechanism.Combining with FLAC3D numerical simulation,the control effect of extremely close roadways is inverted,and the control effect is verified by field monitoring.The results show that after the reinforcing support,the roadway is stable and safe with a cross section shrinkage rate at 5.29%,which meets the requirement for extremely close roadway control.It can provide references for roadway support under similar engineering geological conditions,and has certain application and promotion value.
作者
韩华
HAN Hua(Shanxi Jinshen Energy Co.,Ltd.,Hequ 036500,China)
出处
《煤炭工程》
北大核心
2019年第S1期60-63,共4页
Coal Engineering
关键词
极近距离
巷道失稳
FLAC3D
围岩控制
very close range
roadway instability
FLAC3D
surrounding rock control
