论文部分内容阅读
高地应力是岩爆发生的必要条件,地应力测量则已经成为岩爆预测的重要内容。本文在介绍水压致裂地应力测量的基本原理及试验步骤的基础上,进行了西周岭隧道的地应力测量,根据测量结果,采用Russenes和Turchaninov二个岩爆判据进行了隧道岩爆综合预测,认为西周岭隧道有发生弱～中等岩爆的可能性。同时,将理论分析结果与实际施工情况进行了对比,认为岩爆理论分析结果与实际情况存在偏差的原因在于岩爆的理论判据没有结合具体的地质情况和施工情况。建议在隧道施工过程中,借助现场量测的基本数据结合现场施工的具体情况进行岩爆预测,以便更准确地预报岩爆的范围及烈度,防止岩爆灾害的发生。
High ground stress is a necessary condition for rockburst, and in-situ stress measurement has become an important part of rockburst prediction. Based on the introduction of the basic principles and test steps of hydraulic fracturing stress measurement, the paper carries out the measurement of the ground stress of the West Zhouling tunnel, and based on the measurement results, the rockburst prediction of the tunnel is made using two rockburst criteria of Russenes and Turchaninov , That there is the possibility of weak ~ medium rock burst in the western Zhouling tunnel. At the same time, the results of theoretical analysis and actual construction are contrasted. The reason why the results of rockburst analysis are inaccurate with the actual situation is that the theoretical criteria of rockburst do not combine the specific geological conditions and construction conditions. It is suggested that the rockburst prediction should be carried out with the help of the basic data of on-site measurement and the specific conditions of on-site construction in order to predict the range and intensity of rockburst more accurately and prevent the occurrence of rock burst.