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我国幅员辽阔,山岭区面积约占60％。在山岭区蕴藏着极其丰富的资源,等待开发。可是,目前山区公路的数量和质量都不能满足日益发展的需要,因此山区公路建设大有发展前途。由于山区大部分地形较复杂,相对高差较大,所以在山区公路建设中就不可避免地需要使用回头弯来展线,以克服高差,减少工程量,降低造价。在山区公路的测设中,不断总结,摸索新的测设方
My country is vast in size, with an area of about 60%. In the mountain area contains extremely rich resources, waiting for the development. However, at present, the quantity and quality of mountainous roads can not meet the needs of the ever-increasing development. Therefore, mountainous highway construction has great prospects for development. Due to the complexity of mountainous terrain and the relatively large height difference, it is inevitable to use backhaul to extend the line in mountainous highway construction in order to overcome the elevation difference, reduce the engineering quantity and reduce the cost. Surveying and mapping in the mountain road, continue to summarize, explore new test set side