中文摘要：

针对深部穿层巷道围岩非对称变形破坏特征，对其破坏机理及控制对策进行了数值分析和工程试验研究。结果表明，受埋深大、高地应力，特别是水平构造应力的影响，原支护下巷道围岩出现了非对称大变形破坏，穿层巷道断面与岩层倾向成钝角部位表现出最先破坏的关键部位特点；非对称破坏主要表现为围岩结构的非对称性影响下产生的不同岩层间的剪切滑移变形及高应力作用下的软弱岩层挤出变形等错位变形。结合现场工程地质条件，提出了锚网索＋底角锚杆的非对称耦合支护对策，对关键部位进行了加强支护，有效地遏制了围岩的非对称变形，消除了巷道围岩的错位变形，提高了巷道围岩整体稳定性，现场应用效果良好。

英文摘要：

The paper presents the research results based on failure mechanism and control counter-measures by numerical analysis and engineering tests. It shows that with the increase of buried depth, ground stress, and especially the influence of the horizontal tectonic stress, the surrounding rock of tun-nels performs large asymmetric deformation under the original supporting conditions, and the key parts of failure are at the cross section of roadway layer and rock tendency layer;dislocation deformations such as shearing slip deformation between different layers and extrusion deformation of soft rocks by the influence of asymmetry structure of surrounding rocks will also occur. Combined with field engi-neering geological conditions, the asymmetric coupling support countermeasures by using bolt-mesh-anchor and anchor in corner to strengthen key parts supports are put forward, which shows good effect in field applications on asymmetric deformation and dislocation deformation controlling, and surround-ing rock stabilities are improved.