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通过几年来的施工实践,对山谷路线的设计工作提出以下几点意见,以供参考。 (一)沿溪傍山路线的总方向,除跨越分水岭时,不会发生大的变化。但是取决路线走左岸或者右岸,牵涉问题较多,必须作出详细比较。为了避去陡壁,减少路基石方,路线往复跨河,虽在工程造价上可能节省一些,但是漫水路堤与低水位桥洪水季节阻车时间多,会降低通车能力。在目前爆破技术不断提高的情况下,对开挖大量石方集中的山坡路基,施工问题是易于解决的。傍山沿溪线左右两岸工程量的大小与
After several years of construction practice, the design of the valley route proposed the following comments for reference. (A) The general direction of the route along the Bridgeside Hills will not change significantly beyond the watershed. However, taking the route to the left bank or the right bank involves more problems and must be compared in detail. In order to avoid steep walls, reduce the stone roadbed, the route reciprocating river, although the project cost may be some savings, but the flood embankment and low water bridge flood season more than the stop time, will reduce the traffic capacity. In the current blasting technology continues to improve circumstances, the excavation of a large number of stone-based hillside subgrade, the construction problem is easy to solve. Along the mountain along the brook about the size of the project and the size of both sides