Optimal location and effect judgment on drainage tunnels for landslide prevention

为山崩预防的一个最佳的排水隧道地点决心方法被建议在排水隧道建设解决存在问题。在中国的排水隧道系统的当前的应用程序被考察，排水隧道的函数作为集水和拦截被分类。数字模拟被进行。结果证明集水和拦截隧道在单层模型的模拟有功能的变化，它在更低的层显示出渗透状况的减小。集水的功能能在深斜坡被观察，当拦截的功能在地下水来源附近被观察时。由使用，斜坡安全因素和分泌物水为邻近的排水隧道的构造质量作为判断在固定节点和节流动作为最佳的排水隧道地点，和毛孔水压力的目的总计，排水隧道的设计原则被介绍。K103 山崩作为一个例子被说明决定最佳的排水隧道地点。测量排水隧道效率被评估并且与那相比从数字分析基于地下水数据。结果验证现在的数字学习。

An optimal drainage tunnel location determination method for landslide prevention was proposed to solve the existing problems in drainage tunnel construction. Current applications of drainage tunnel systems in China were reviewed and the fimctions of drainage tunnel were categorized as catchment and interception. Numerical simulations were conducted. The results show that both catchment and interception tunnels have variation of the function in the simulation of monolayer model, which shows the reduction of permeability condition in lower layer. The function of catchment can be observed in the deep slope, while the function of interception is observed near groundwater source. By using the slope safety factor and discharge water amount as the objectives of optimal drainage tunnel location, and pore-water pressure in fixed node and section flux as the judgment for construction quality of adjacent drainage tunnel, the design principle of drainage tunnel was introduced. The K103 Landslide was illustrated as an example to determine the optimal drainage tunnel location. The measured drainage tunnel efficiency was evaluated and compared with that from the numerical analyses based on groundwater data. The results validate the present numerical study.