摘要
运用Midas/GTS-FLAC^(3D)耦合建模手段,建立圆钢锚杆和螺纹钢锚杆模型,通过FLAC^(3D)数值模拟软件,研讨锚杆横肋作用机理,对比分析锚固状态下圆钢锚杆和螺纹钢锚杆在荷载相同时的锚杆-锚固剂-围岩三者之间的力学关系及变形情况。发现2种锚杆轴向应力随着深度的增加逐渐减小且当2种锚杆处于相同埋深时,圆钢锚杆的轴向应力略大于螺纹钢锚杆,所得结果与文献[1]做的相似材料模拟试验结果基本相同,因此可以通过FLAC^(3D)数值模拟软件建立的数值模型,作为深入研究横肋与锚固剂作用关系、锚固剂破坏规律以及不同岩性中锚杆横肋参数选择的一种参考办法。
Using Midas/GTS-FLAC3D coupling modeling method, establish the steel bolt and bolt model, through numerical simulation software FLAC3D,research of bolt transverse rib mechanism, comparative analysis of mechanical relationship between bolt anchoring state bar bolt and bolt in the same load anchorage agent three and surrounding rock deformation. Found two kinds of bolt axial stress decreases gradually with the increase of the depth of two kinds of anchor and when at the same depth, the axial stress of the bolt bar is slightly larger than the bolt, the crown made of similar material simulation test results are basically the same of literature [1],so it can be simulated by FLAC3D software to establish the numerical model. As a further study on effect of transverse rib and anchoring agent,anchoring agent failure law and anchor parameters of different lithology transverse ribs in a reference way.
作者
殷博超
耿永飞
王利元
白常亮
刘香萍
YIN Bo-chao, GENG Yong-fei, WANG Li-yuan, BAI Chan-liang, LIU Xiang-ping(The Second Coal Mine, Yangquan Coal （Group） Company, Yangquan 045000, China)
出处
《煤矿机械》
北大核心
2018年第3期57-59,共3页
Coal Mine Machinery
关键词
圆钢锚杆
螺纹钢锚杆
锚固剂
围岩
数值模拟
力学关系
anchor bar
screw thread steel bolt
anchorage agent
surrounding rock
numerical simulation
mechanics relation
