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推导出JRC-JCS非线性模型下屈服接近度的计算公式,采用数值方法编制JRC-JCS模型下屈服接近度的计算程序,并对比该程序的分析结果与FLAC3D所得的结果,探讨各个参数对屈服接近度的影响。分析表明,屈服接近度YAI JJ=1的结果与FLAC3D计算的塑性区分布范围表征的结果一致,验证了计算程序的正确性和基于屈服接近度分析获得的结果能反映非塑性区岩体的危险程度,较塑性区分布判别方法更加合理。随着节理粗糙度系数J RC和为岩体压缩强度J CS的增大,岩体屈服接近度均逐渐减小,YAI JJ与J RC的关系呈线性特征,YAI JJ与J CS的关系呈非线性指数特征。
The calculation formula of yield proximity under JRC-JCS nonlinear model is deduced. The calculation program of yield proximity under JRC-JCS model is established by numerical method. The results of FLAC3D and the results of this program are compared. The impact of proximity. The analysis shows that the results of yield proximity YAI JJ = 1 are consistent with the results of FLAC3D calculated plastic zone distribution characterization. The correctness of the calculation program and the results based on yield proximity analysis can reflect the danger of non-plastic zone rock mass Degree, more discriminative than plastic zone discrimination method is more reasonable. With the increase of the joint roughness coefficient J RC and the compressive strength of rock mass J CS, the yield proximities of rock mass decrease gradually, the relationship between YAI JJ and J RC is linear, and the relationship between YAI JJ and J CS Linear index characteristics.