黄土地区公路排水系统病害防治

根据对黄土地区公路排水系统使用状况的调查 ,分析了排水设施及系统的常见病害及其成因 ,从设计、施工与养护管理方面提出了适宜的防治措施。分析表明 ,黄土地区公路超高路段排水不宜采用中央分隔带开口漫流方式 ;合理设置截水沟会明显减小表面径流对挖方边坡的冲刷破坏 ;黄土地区公路应加强排水设施出水口端部处理 ;应从长远发展的观点出发 ,设计具有超前性和主动性的综合排水系统 ,保证排水的系统性和完整性 ;加强养护力度 ,做到早发现、早处理。

Prevention and treatment for disasters of highwaydrainage system in loess area

According to the investigation for drainage system of highway in loess area, the disasters and their causes of drainage facilities and systems are analyzed, the fitting protective measures are put forward.The results indicate that the hatch overflow is not suitable to drain water of center strip in superelevation section. Reasonable setting of cut off drain can evidently minish the scour to the cut slope. Treatments for the end of water outlet should be strengthen in design of highway of loess area.The advanced and go aheadism compositive drainage system should be designed, maintaining should be strengthen.