Reliability Analysis Of Stability Of Soil Slopes Based On Vertical Slice Techniques

The stability evaluation of landslides, with a very important significance in theoretical researches and a highly practical value, is one of the essential problem as well as one of the most impending projects in the researches of landslides. The variabilities of various random variables, which affected the stability of landslides, are considered in reliability theory, which based on probability theory, and the rigorous probability is used to gain the degree of security in the stability analysis of landslides. As a result, the reliability theory is more practical in the stability analysis and assessment of landslides.Firstly, this article reviews the recent research state of vertical slice techniques and reliability theory, discusses the fundamental methods about vertical slice techniques and reliability analysis. It also describes the research process, calculating methods selected, crucial technical problems solved, primary research productions acquired, prospect of development, and eventually draws some disciplinary conclusions. As a simple and practical calculate method of reliability index, Rosenblueth method doesn't need to know the probability distribution of all kinds of state variable. Only use the averages and variance of state variable can we get the reliability index of soil slopes, and the calculate accuracy meet precision demands. These conclusions have been verified by analyzing the stability of engineering practice. It means that the Rosenblueth method can be satisfied with the requirement of practical engineering and has broad practical value.