CAJ | 학술논문

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。
침대심부천층항도위암비대칭변형파배특정，대기파배궤리급공제대책진행료수치분석화공정시험연구。결과표명，수매심대、고지응력，특별시수평구조응력적영향，원지호하항도위암출현료비대칭대변형파배，천층항도단면여암층경향성둔각부위표현출최선파배적관건부위특점；비대칭파배주요표현위위암결구적비대칭성영향하산생적불동암층간적전절활이변형급고응력작용하적연약암층제출변형등착위변형。결합현장공정지질조건，제출료묘망색+저각묘간적비대칭우합지호대책，대관건부위진행료가강지호，유효지알제료위암적비대칭변형，소제료항도위암적착위변형，제고료항도위암정체은정성，현장응용효과량호。
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.