Location Design Of Xin He Highway And Some Discussion About Enviornmental Locationdesign Technology

In Western region,The condition of engineering construction is complicated,and the ecosystem environment is flimsiness, the environment condition restrict the construction of road seriously,the problem of coordination between the road engineering and environments is very outstanding.thus,it is urgency to deal with the relation between the road constrution and the environment protection , to explore the way of coordinate development,not only have acdamic value,but also have far-reaching realistic meaning.For choosing a relatively normal and systemic mode to the coordinate relation and the decision process of some factors of the highway of mountain, this text take Xinhe highway as the rely engineering, at the base of referring the domestic and international literature data extensively, using the Analytic Hierarchy Process, research and deciding the route selection design mode of prevalent highway of mountain,Based on the theory,the route selection technic of Xinhe highway , the main contents as follows:1. Firstly, the problem of interaction between the route selection engineering and the environment is carried on the simple study on the highway of the mountain area. Finally, the mutual coordination between the route selection engineering in the Xinhe highway and the environment along the line is introduced and the restriction of the line by the environment along the line , and relevant preventive measures are adopted.2. According to the design principle of the Xinhe highway, in the line plane,the design parameter and standards such as straight lines, curves, tempered curves ,the minimum length of planate curves, cant, widen, stadia in the curves, and the design parameter and standards in the longitudinal section such as the longitudinal gradient, the compositive gradient, the vertical curves are discussed, and provide the route selection in the Xinhe highway with relevant standard.3. According to problems of environment and the planate -longitudinal technique, the mouthed of route selection in the Xinhe highway is analyzed theoretically by Analytic Hierarchy Process.4.According to the certain flat-vertical code, and the characteristics of Xinhe highway , The route scheme is researched and compared ,also the recommend scheme is put forward. Then according to above all ,the route orientation and the main technique characteristics was given.