Optimum Design For Slope Reinforcement Project

Slope engineering relates to all aspects of national economic construction, such as the open air mining engineering, railroad, highway, water conservancy, construction engineering and civil construction. On one hand it determines the safety and in gear use of all constructions which it support, on the other hand it influences the cost of the building. With the quick increasing of population and excess exploitation of land resource, slope problem has been one of the three biggest geological disasters and the other two are earthquake and volcano.The disposal of roadbed and slope is a weakness in freeway construction for a long time. In the metaphase of 1980's, our highway construction mostly give priority to low grade road. For the low traffic and small investment, deep digging and high filling are infrequent. So slope retaining engineering is not the principal engineering in highway construction and even be neglected. With the rapid development of highway construction, slope stability problem stands out increasingly in recent three decades. But being short of slope retaining research by the numbers, there are a lot of hidden dangers in highway construction. Once slopes lose their stability, the landslide will interrupt the traffic and even result in huge economic loss and bring on bad social influences. At the same time, it will greatly increase the evening slope retaining expense. Therefore, how to reinforce slopes efficiently and try our best to reduce the engineering cost for a practical slope when we select retaining project is very important. In an other word, optimum design for slope retaining project is a principal considered problem.This paper expatiates the design principle and apply condition of all kinds of slope retaining technology; summarizes slope class and the methods how to select slope reinforcement project; indicates the key factor of anchoring angle through the analysis of the anchoring mechanism, deduce the formula for the optimum and the maximum slide resistant anchoring angles respectively; analyze slope stability by finite element method and calculate stress, displacement, plastic zone throughc- reduction algorithm.Furthermore, in combination with a practical slope engineering which lies in one freeway in Yunnan province, this paper use the upper theory and methods to carry out the optimum design for slope reinforcement project for a practical slope which lies the right side of K47+475-K47+630, and try to make this engineering safe, feasible and economical.