Analysis Of The Impact Of Natural Factors On Highways In Yunnan And Research On Natural Zoning

With the rapid development and urgent need of our country's social economy,highway construction has become an important foundation for social and economic development.Highway engineering is a kind of linear artificial building,which is built directly in the natural environment,will pass through different natural environment and interact with the natural environment.Yunnan is a province with a complicated natural environment,so it is of great importance to realize the planning,design,construction and maintenance of highway engineering.Therefore,it is of great significance to study the natural zoning of highway engineering in Yunnan province.The work contents and achievements of this paper are as follows:(1)The influence of the complex natural environment(topography,climate,types of rock and soil,hydrology,geological hazard)on highway engineering and the corresponding countermeasures are discussed.(2)Referring to the highway construction specifications,standards and related data and experience,the paper puts forward the index system of highway division in Yunnan province.(3)To study and summarize the theories,principles and methods of highway natural zoning at home and abroad,and put forward the principles and methods that are more in line with Yunnan province's highway natural zoning;(4)Based on the principles,indexes and methods of highway zoning in Yunnan province,the highway landform zoning,Yunnan highway climate zoning,Yunnan highway Rock-soil zoning,Yunnan highway hydrology zoning and Yunnan highway geological disaster zoning are completed by using Arc Gis as the technical platform and Auto CAD.(5)On the basis of each single division of the above highways,the natural division of the highway in Yunnan province is finally completed.