岩石节理面剪切流变的试验研究

A Study on the Shear Rheology of Rock Joint Plane

通过对龙滩水电站岩石节理样本进行快剪和剪切流变试验的比较研究,分析了节理面流变对剪切强度的影响及剪切蠕变机理,确定了节理面的长期抗剪强度,并从岩石理论模型出发,对试验数据进行了回归分析,建立了不同正应力作用下的剪切蠕变经验公式,以便于了解岩石材料在给定条件下的蠕变特性。

Shear creep mechanism and the influence of joint plane rheology upon shear strength are analyzed by a comparative study between the fast shear and shear rheological experiment of rock joint samples taken from Longtan Hydraulic Power Plant. Long-term shear strength of joint plane is determined by experiments, and the empirical formula of shear creep under diverse normal stress is gained on the basis of rock theory model through regression analysis of experimental data. In this case, the creep characteristics of rock under specified condition can be easily determined.