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针对藏区某水电工程边坡存在大范围多区域碎裂岩体的特点,为求得岩体强度参数,对其逐一进行反分析。在分析其中某一区域的碎裂岩体时,先假设其他碎裂岩体强度较高,进行滑带搜索计算,直到滑带发生转移且安全系数满足实际要求,最后得出满足一定条件下的凝聚力与内摩擦角的线性关系。利用此线性关系,并结合工程实际,最终确定了较为合理的参数组合以供工程设计使用。
In view of the characteristics of a large-scale multi-region rock mass in a hydropower project slope in Tibetan area, in order to obtain the rock mass strength parameters, the anti-analysis is carried out one by one. In the analysis of a certain area of the crushed rock mass, we assume that the other crushed rock mass is higher, and carry on the search of the slide zone, until the slide zone is shifted and the safety coefficient meets the actual requirements. Finally, Linear Relationship between Cohesion and Internal Friction Angle. By using this linear relationship and combining with the engineering practice, a more reasonable combination of parameters is finally determined for engineering design.