高填方堰塞湖防洪边坡及箱涵工程设计研究

Study on Design of Flood Control Slope and Box Culvert for High Fill Barrier Lake

针对工程场地平整形成的堰塞湖箱涵排水及防洪边坡两个工程技术难点,采用理论结合实际的方法,一方面运用水文数据模型对工程所需涵洞的汇水区进行绘制,得到对应的出口断面设计洪峰流量,进而得出所需箱涵相应的设计截面;另一方面采用浆砌片石边坡及挡土坝边坡进行论证,得出在缓解坡比的情况下,可利用浆砌片石防洪边坡进一步降低工程造价。

Aiming at two engineering technological difficulties of box culvert drainage and flood control slope for the barrier lake formed by the field engineering, a method of combining the theory with the practice is used. On the one hand, the hydrologic data model is used to draw the catchment zone of box culvert required for the project in order to obtain the corresponding design flood peak flow of outlet section and then to obtain the corresponding design section of the required box culvert. On the other hand, the mortar rubble slope and retaining dam slope are demonstrated. The result shows that the mortar rubble flood control slope can be adopted to further reduce the engineering cost in the case of mitigation of slope ratio.