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影响工程岩体抗剪强度参数的因素很复杂,建立定量与定性相结合的多指标综合模型可有效地确定岩体抗剪强度。将多元非线性统计方法引入到岩体抗剪强度指标的研究中,选取了12个影响岩体抗剪强度的定性、定量指标,通过收集到的大量工程数据,分别建立凝聚力和内摩擦角非线性显式方程,决定系数分别为0.992 729,0.999 998。该方法可考虑定量、定性因素的影响,经现场实测数据验证,该模型具有较高的计算精度。运算过程简单,可方便工程现场使用,具有较高的工程实用价值。
The factors influencing the shear strength parameters of engineering rock mass are complex. Establishing a multi-index comprehensive model combining quantitative and qualitative analysis can effectively determine the shear strength of rock mass. The multi-element nonlinear statistical method is introduced into the study of shear strength index of rock mass. Twelve qualitative and quantitative indexes that affect the shear strength of rock mass are selected. By collecting a large amount of engineering data, the cohesion force and internal friction angle Linear explicit equation, the decision coefficients were 0.992 729,0.999998. The method can take into account the quantitative and qualitative factors, and is verified by on-site field data. The proposed model has high computational accuracy. The calculation process is simple, it can be convenient for the project site to use and has high engineering practical value.