沈海高速公路复线福安至漳湾段工程跨河桥梁防洪影响评价

山区高速公路地形地质复杂,河道众多,桥梁隧洞总长占路线长度的比例较大。桥梁跨越河道,必会对河道行洪及河段涉水建筑物造成一定的影响。在高速公路建设过程中,如果涉河桥梁跨河角度和桥墩型式布置不当,将会带来汛期的水位壅高、河道冲刷等一系列问题,对河势稳定、防汛抢险和水利管理带来很大的影响。通过对沈海高速公路复线福安至漳湾段工程跨河桥梁进行分析,对河道泄洪影响进行评价,发现其中布置不当对河道泄洪造成安全影响的因素,并提出整改意见。

Flood Control Impact Assessment for Bridge across the River Project from Fuan to Zhangwan of Shenhai Expressway

It is complex of the terrain and geology along the expressway and rivers are numerous in the mountainous area,and the total length of the bridge and tunnel accounts for a large proportion of the route.The bridge across the river course will cause a certain impact on flooding in river channel and aquatic buildings along the river section.A series of problems about backwater level and river erosion will be caused in the flood period if the river crossing angle of bridge across the river and bridge piers are laid improperly during the process of constructing the expressway,all of these will impact seriously the stability of river,flood control and water conservancy management.The impact on flood discharging in the river course is evaluated by analyzing the bridge across the river along Fuan to Zhangwan section project of Shenhai expressway,the factors impacting the safety of river course caused by improper distribution are found and reasonable rectification suggestions are put forward in the study.