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山区公路选线最主要的问题在于越岭线的布设。我们知道,越岭路线是连续升坡,受纵断面及平面的双重限制,还要使横断面上的挖、填适宜。它在每条公路中往往是技术标准最低、工程造价最高的段落。山区公路选线工作是比较复杂而艰巨的,特别是在任务紧急的情况下,要求一次定测,甚至不可能事先有等高线平面图,或先测导线,在纸上设计,还要保证路线质量和正常的测量进度,这就加重了选线工作者的负担,偶一不
The main problem of mountain highway route selection lies in the layout of the crossing line. We know that the cross-ridge course is a continuous slope that is limited by both vertical and horizontal planes. It is also necessary to dig and fill the cross-sections. It is often in each road is the lowest technical standards, the highest cost of the project paragraph. Mountain road route selection work is more complex and arduous, especially in the case of emergency tasks, requires a fixed measurement, or even impossible to have a contour map in advance, or test the wire, the paper design, but also to ensure that the route Quality and normal measurement progress, which aggravated the burden on line workers, not one day