水平排水孔在岸坡治理工程中的应用

由于含水平排水孔的渗流场分析的复杂性,以及水库岸坡本身稳定性分析的复杂性,严重地限制了水平排水孔在水库岸坡治理工程中的应用。增设水平排水孔是提高水库岸坡稳定性的重要方法,因此围绕水平排水孔的布设模式以及排水效果展开研究具有十分重要的理论和现实意义。考虑到分析的复杂性以及是初次尝试,仅在二维条件下,通过一个工程算例,完整地介绍了从水平排水孔模型的建立、含水平排水孔的渗流场分析到治理后岸坡的稳定性分析的整套方法。通过数值分析的结果可以直观地看出,增设水平排水孔能有效地提高水库岸坡的稳定性。同时,相对于增大水平排水孔孔径而言,增长孔长对其排水效果的影响更为明显。

Application of horizontal drain holes in the engineering control of bank slope

Since the analysis of seepage field with horizontal drain holes and the stability analysis of reservoir banks are very complicated, the application of horizontal drain holes in the engineering control of bank slope is restricted seriously. It is economical and reasonable to add horizontal drain holes to improve the slope stability, so it is of both practical and theoretical significance to research horizontal drain holes. Considering the complication of analysis, the paper introduces a complete set of methods of establishing the model of horizontal drain holes, analyzing the seepage field with horizontal drain holes and analyzing the slope stability after engineering control with horizontal drain holes only in two dimensional condition with a calculation example. The results of numerical analysis show that the slope stability can be improved by adding horizontal drain holes. and the length of the hole has obvious effects on draining compared with the aperture.