摘要
为解决深井巷道过构造破碎带支护困难问题,结合围岩物理力学性质,通过数值模拟确定锚杆预紧力及锚杆长度参数,并基于围岩弹性支护理论,确定了“高强高预紧力锚杆+钢带托盘+笼型锚索”巷道支护优化方式。现场观测结果表明优化支护方案能有效抑制构造破碎带内巷道围岩的变形失稳,保证巷道稳定。
In order to solve the supporting hard problem of deep well roadway passing through the structural broken zone,combining with the physical and mechanical properties of surrounding rock,the parameters of anchor rod pretightening force and anchor rod length are determined through numerical simulation,and based on the elastic support theory of surrounding rock,the optimization mode of roadway support of"high-strength and high pretightening force anchor rod+steel belt tray+cage anchor cable"is determined.The on-site observation results indicate that the optimized support scheme can effectively suppress the deformation and instability of the roadway surrounding rock in the structural broken zone,ensuring stability of the roadway.
作者
尹彦东
Yin Yandong(Xintai City Yangquan Mining Industry Co.,Ltd.,Shandong Tai'an 271000)
出处
《山东煤炭科技》
2023年第9期17-20,共4页
Shandong Coal Science and Technology
关键词
巷道
构造带
支护
roadway
structural zone
support
