传递系数法的模型试验验证

基于强度储备法和超载法的两种传递系数法已被广泛用于评价岩质滑坡的稳定性，目前对该方法的验证都是用极限平衡法和有限元等数值分析方法进行相互分析比较。以三峡库区巴东赵树岭滑坡原型为背景，采用岩石相似材料模型试验方法对这两种方法的可靠性进行了验证。研究结果表明：这两种方法计算的稳定系数都偏于保守。基于超载法的理论稳定系数较接近试验情况，并且其条块间允许有拉应力的假设符合模型破坏特征，而基于强度储备法的稳定性系数与试验情况相差较大；在实际工程中，采用基于超载法的传递系数法是可靠的。

Verification of Transfer Coefficient Method Applied to Landslide Stability Analysis by physical model test

Two transfer coefficient methods, based on over-loading method and strength reserve method, which are commonly applied to evaluate rock landslide stability, are validated at present through analyzing the results between limit equilibrium and finite element method. In this paper, the reliability of the two methods is validated through rock similar material modeling test on the background of Zhaoshuling landslide of Badong in the Three Gorges Reservoir area. Research result shows that the stability factor values calculated with these two methods are lower than that from modeling tests, and the value from over-loading method is preferable, of which the assumption of the essistence of tensile strength between blocks accords with the failure character of the model is given. However, the stability coefficient on the basis of the strength reserve method is far from that from testing. The transfer coefficient method based on the over-loading method is realialde when used in practical engineering.