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南方多雨地区的广东,海岸线长达数千里,河流错综,公路及其构造物严重遭受洪水的侵袭,每年国家对公路水毁工程都要付出巨额的投资,据统计,每年每公里公路用于水毁工程的支出达60元左右。更重要的是,由于水窖,交通断阻,直接影响国家运输计划的完成。公路水毁工程主要发生排水不良和崩塌地段,这些地段由于雨水泄溢路面,使路面受到严重冲刷,路基泡成软化,边坡上坍下塌。桥涵被毁工程也占极大的比重,主要原因是:上游飘浮物的冲撞;河床不顺,急流冲击台墩;桥底不稳定,变迁甚大,排水不够,构造物本身残旧,木桥台排架深度不足,构件松脱,木质腐朽;
In the rainy southern region of Guangdong, the coastline stretches for thousands of miles and the rivers are intricate. The roads and their structures have been hit hard by floods. Every year, the country pays a huge sum of money for highway damage. According to statistics, every year, Water damage project spending up to 60 yuan. More importantly, due to the cellar, traffic interruptions have a direct impact on the completion of the national transport plan. Mainly caused by poor drainage and collapsed areas in the highway water damage project, the rainstorms overflowed the pavement in these areas, causing the road surface to be seriously washed away. The subgrade softened and the slope collapsed. Bridge and culvert destroyed projects also account for a large proportion, mainly due to: the upstream floating objects of the collision; river bed is not smooth, rapid impact Taiwan piers; bridge instability, great changes, inadequate drainage, structures themselves dilapidated, Insufficient shelf depth, loose parts, wood decay;