传递系数法在滑坡推力计算中的应用——以通山县源头村滑坡为例

Application of transfer coefficient method in landslide thrust calculation taking the landslide in Yuantou Village,Tongshan County as an example

基于传递系数法的基本原理及模型概化原则,介绍传递系数显式法及传递系数隐式法的区别,通过案例说明了传递系数显式法及传递系数隐式法的计算方法。对比两种计算方法发现:乘以安全系数增大下滑力的传递系数显式法较除以安全系数降低抗滑力的传递系数隐式法的滑坡推力计算结果偏大,依据显式法设计滑坡防治工程具有更高的安全储备,适合防治级别较高的滑坡或重要永久性边坡;依据隐式法设计的滑坡防治工程安全储备稍低,适合防治级别较低的滑坡或一般临时边坡。

This paper expounds the basic principle and model generalization principle of transfer coefficient method,and introduces the difference between explicit transfer coefficient method and implicit transfer coefficient method,and illustrates the calculation method of explicit transfer coefficient method and implicit transfer coefficient method through the case.By comparing the two calculation methods,it is found that the landslide thrust calculation result of the explicit method which increases the sliding force by multiplying the safety factor is larger than that of the implicit method which reduces the anti-sliding force by dividing the safety factor.The landslide control engineering designed based on the explicit method has greater safety reserve,which is suitable for the prevention and control of higher grade landslide or important permanent slope.The landslide control engineering designed according to the implicit method has a slightly lower safety reserve,which is suitable for the control of low grade landslide or general temporary slope.