Evaluation Research Of Rainfall Factor On Slope Instability In Mountainous Areas In Southern Of Shaanxi Province

With the rapid development of road construction and the of promote the regional economy and the people's living standard, the safety and patency of road were very important. However, due to various reasons, highway facilities were often threatened by geological hazard of subgrade, which caused highway traffic and social economy influence. Especially the mountains, Due to the fragile geographical and natural environment, after the highway construction,the amount and type of slope disasters increasing and highway construction and management face challenges. Study the stability of mountainous highway slope in rainfall condition and establish a set of practical feasible relevant evaluation system to provides scientific basis for engineering construction and management decision and preventing and reducing disaster to the influence of highway operation, it's meet the current highway development situation.The thesis bases on the western traffic construction project---roadbed hazard prevention technology popularization and application demonstration. According to the field investigating and collecting the data of disasters and Regional environment of ShiTian highway HanZhong areas in southern of ShanXi, using the fuzzy comprehensive evaluation method to evaluate the dangerous rank for disasters.First, access to the information at home and abroad widely and through the analysis and induction of the factors influencing slope stability to get influence factors of significantly and highlight the damage from rainfall and the rain water to provides a basis for the selection of evaluation factors.Secondly, tiding survey data of engineering and historical disasters data, summing up natural environment and engineering environment of mountainous areas, learning that how they impact the engineering. Concluding destruction features of highway disasters, classifying slope and slope disasters in accordance with lithology to make the application of evaluation system more simpler.Then, analyzing and contrasting common evaluation methodology, confirming method that this article require. Establishing evaluation model to constitute the rigorous evaluation system with the data from survey and summary. By evaluating, Get disasters dangerous level.Finally, useing evaluation results into realistic project.