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六、滑波、泥石流滑坡、坍方是山区公路的主要病害之一。由于山坡或路基边坡发生滑动,常使交通中断;大规模的滑坡往往堵塞甚至摧毁公路。其成因很多,主要是水害导致的。泥石流是一种突然暴发的含大量泥、沙、石块的洪流,对公路的危害很大,主要是堵塞、淤埋、冲刷、撞击路基,或因堵塞河道使水位壅升,淹没上游沿河路基等。此类不良地带在我国不少地区分布,养护工作着重于观察和预防。每年雨季前后,对易坍、易滑及泥石流地段,要进行仔细检查,以便及时采取防范措施。 1.为防止地表水和潜流水流入坍体,可
Six, slippery waves, landslides, landslides is one of the major diseases of mountainous roads. Traffic is often interrupted due to slips on slopes or subgrade slopes; large landslides often block and even destroy highways. The causes of many, mainly caused by water damage. Debris flow is a sudden outburst of floods containing a large amount of mud, sand and rocks. It is very harmful to the roads. It is mainly caused by blocking, silting, scouring and impacting the embankment or the water level rising due to blockage of the river, Subgrade and so on. Such bad areas in many parts of China distribution, conservation focused on observation and prevention. Every year before and after the rainy season, the landslide, slippery and debris flow areas should be carefully inspected so that timely preventive measures can be taken. 1. To prevent surface and sub-surface water flow into the slump, can