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Failure Mechanism and Control Technology for Deep Inclined Rock Roadway with Weak Planes

机译:弱平面深倾斜岩巷破坏机理与控制技术

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In this study, multiple methods that include geological surveying, laboratory studies, and numerical modeling have been used to study the deformation characteristics of a "deep inclined rock roadway with weak planes" (DIRRWP). Failure of the DIRRWP was found to be triggered initially by the shearing of the rock near the weak plane. The movement of the failed rock resulted in reduced confinement of the deeper rocks, and causing the failure of the supporting units and the severe deformation of the surrounding rocks. Hence, it is concluded that DIRRWP stability is affected predominantly by rocks near the weak plane. Corresponding control strategies for DIRRWP deformation were proposed: (1) greater support intensity is necessary to maintain the stability of the whole DIRRWP: (2) additional support is needed for rocks near the weak plane to reduce the potential of failure; (3) to increase the bearing capacity of the floor strata, as the floor needs to be supported: and (4) a supplementary support technique should be considered for cases of large deformation. The case study presented here indicates that the proposed control strategies can significantly reduce the potential of failure in rocks near the weak plane, thus preventing severe deformation of the DIRRWP.
机译:在这项研究中,已经采用了多种包括地质测量,实验室研究和数值建模的方法来研究“深倾斜岩路与弱平面”(DIRRWP)的变形特征。发现DIRRWP的故障最初被弱平面附近的岩石的剪切触发。失败的岩石的运动导致较深的岩石的限制减少,并导致支撑单元的失效和周围岩石的严重变形。因此,得出结论,Dirrwp稳定性受到弱平面附近的岩石的影响。提出了对相应的DirRWP变形的控制策略:(1)更大的支撑强度是必要的,以保持整个DIRRWP的稳定性:(2)弱飞机附近的岩石需要额外的支撑,以降低故障潜力; (3)为了增加地层的承载力,因为需要支持地板:(4)应考虑辅助支持技术,以便大变形。这里提出的案例研究表明,所提出的控制策略可以显着降低弱平面附近的岩石失效的潜力,从而防止了尾部的严重变形。

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