含非贯通结构面岩体强度损伤规律研究

Research on the Strength Damage Law of Rock Mass Containing Non-coalescence Structural Planes

文章基于前期对含共面结构面岩体强度损伤研究的基础上,进一步分析含非贯通结构面岩体强度损伤的规律。采用数值模拟的方法计算不同方案情况下61个试样的峰值强度,分析岩桥倾角、结构面摩擦系数、围压、连通率和结构面倾角对损伤系数的影响,给出它们之间的函数关系,推导计算含非贯通结构面岩体的强度损伤经验公式。利用该公式能够准确的判断岩体强度的损伤程度,更好的评价岩体工程的稳定性。

Based on the previous study on the strength damage of rock mass containing coplanar structural planes, it is further analyzed in this paper that the strength damage law of rock mass containing non-coalescence structural planes. Numerical simulate method was used to calculate the peak strength of sixty-one samples in different projects. And then, analyze the influence of damage coefficient by ligament angle, friction coefficient of structural planes, lateral press, connectivity rate, and angle of structural plane, and give the relationship between them. At last, empirical formula was deduced, which can calculate the strength damage of rock mass contain non-coalescence structural plane. Using this formula can accurately determine the damage degree of strength in rock mass, so the stability of rock mass engineering can be better evaluated.