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目前渗沟埋深的计算仅针对双渗沟情况,并且未考虑曲线段超高的影响,难以满足黄土沟壑区渗沟设计的需要。笔者针对黄土沟壑区双渗沟、填沟道渗沟、路基一侧单渗沟等3种渗沟设置形式,从保证路基正常工作状态出发,提出了考虑荷载作用深度、超高影响及冻结深度的渗沟埋深计算公式。工程计算实例表明,文中的双渗沟埋深计算公式较目前双渗沟埋深计算公式偏于安全,能满足工程实际要求。
At present, the calculation of the depth of the gully only aims at the situation of the double gully, and does not consider the extremely high influence of the curve section, so it is difficult to meet the need of the gully design in the loess gully area. In order to ensure the normal working condition of embankment, three kinds of seepage ditches, such as double seepage gully, fill gully seepage channel and single gully seepage on subgrade side, are put forward. The depth of gully is considered in consideration of the depth of loading, the influence of overburden and the freezing depth Calculation formula. The engineering calculation shows that the calculation formula of the double seepage depth is much safer than the current double seepage depth calculation formula, which can meet the actual engineering requirements.