论文部分内容阅读
在大量的调查和工程经验的基础上,运用系统分析的方法研究了公路排水系统的构成、系统划分及功能,提出排水系统可按照小桥涵对应的汇流区域划分出子系统。并将边坡排水系统抽象为“网格”系统,由截水和排水沟槽构成。同时,针对小桥涵在设计及使用中存在的问题,指出影响小桥涵设计流量的重要因素。在引入侵蚀链理论的基础上,提出排水系统设计的关键部位在路基断面的几个坡度转折处,通过排水设施的合理设置可有效控制边坡侵蚀的发展,从而减轻地表径流对公路的危害。研究成果可为公路排水设计和防灾减灾提供参考。
Based on a large number of surveys and engineering experiences, this paper uses the method of system analysis to study the composition, system division and function of the highway drainage system. It is proposed that the drainage system can be divided into sub-systems according to the confluence areas corresponding to the small bridges and culverts. And the slope drainage system is abstracted as “grid ” system, which consists of water cut and drainage trenches. At the same time, in view of the problems existing in the design and use of small bridges and culverts, the paper points out the important factors that affect the design flow of small bridges and culverts. Based on the theory of erosion chain, the key part of drainage system design is put forward at several slope turning points of subgrade section. The reasonable setting of drainage facilities can effectively control the development of slope erosion and reduce the harm of surface runoff to the highway. The research results can provide reference for highway drainage design and disaster prevention and mitigation.