摘要
以桑树坪2号井煤矿3303工作面大埋深采准巷道为背景,采用"拱-梁"结构模型对该巷道进行支护优化,借助FLAC3D数值软件对原支护和改进支护的支护效果进行对比分析。结果表明:改进方案不仅能够提高浅部顶板的稳定性,而且还能有效控制巷道围岩变形。锚索压缩拱承载作用下,巷道围岩竖向应力呈拱状形态,帮部锚杆的存在可以缩小巷道两帮破坏范围,表明顶板的有效支护有利于提高巷道围岩的承载能力。顶板上方围岩所形成的"拱-梁"结构模型,对大埋深采准巷道的支护作用有明显改善。
Based on the deep mining roadway of 3303 working face and the "arch beam" structure model is used to optimize the support of the roadway in Sangshuping No.2 coal mine.The effect of the original support and improved support is compared and analyzed with the help of FLAC3 Dnumerical software. The results show that the improved scheme can not only improve the stability of shallow roof,but also effectively control the deformation of roadway surrounding rock. Under the load of anchorage cable compression arch, the vertical stress of the roadway surrounding rock is arched, and the existence of the anchor bolt can reduce the two damage range of the roadway, indicating that the effective support of the roof can improve the bearing capacity of the roadway surrounding rock. The "arch-beam" structural model formed by the surrounding rock above the roof has obviously improved the supporting function of the deep roadways.
作者
张杰
种阳
黄克军
李亮
张伟龙
ZHANG Jie;CHONG Yang;HUANG Ke-jun;LI Liang;ZHANG Wei-long(Shaanxi Shanmei Hancheng Mining Co.,Ltd.,Hancheng 715400,China;Shaanxi Coal and Chemical Technology Institute Co.,Ltd.,Xi′an 710065,China;Research Center of Coal Green Mining Engineering in Coal Industry,Xi′an 710065,China)
出处
《煤炭技术》
CAS
北大核心
2021年第1期24-27,共4页
Coal Technology
