基于Autobank的苏家庄淤地坝防渗改造及渗流分析

淤地坝防渗加固改造对充分利用水资源、缓解山区用水困难具有重要意义。以苏家庄淤地坝为例,利用Autobank软件对淤地坝坝体浸润线、下游出逸点、出口渗透坡降及渗流量进行计算,并利用传统计算方法对模型进行验证,在此基础上,对该坝进行校核水位下的渗流分析,复核其渗透稳定性,进行上游坝坡粘土斜墙防渗改造及渗流分析,并对斜墙底部宽度进行优化。结果表明,该淤地坝出口渗透坡降大于容许渗透坡降,须对其进行防渗加固;顶宽为5m,底宽为15m的粘土斜墙为最优加固方案。研究成果可为类似工程提供参考。

Anti-seepage Transformation and Seepage Analysis of Warping Dam of Sujiazhuang Based on Autobank

The anti-seepage reinforcement of silt dam is of great significance for making full use of water resources and alleviating water use difficulties in mountainous areas. Taking the Sujiazhuang silt dam as an example, the Autobank software is used to calculate the phreatic line, downstream escape point, outlet permeability slope and seepage flow of the silt dam body. And the model is verified by the traditional calculation method. The seepage analysis of the check water level is carried out, and the seepage stability is checked. The anti-seepage transformation and seepage analysis of the clay sloping wall of the upstream dam slope are carried out, and the width of the bottom of the inclined wall is optimized. The results show that the seepage slope of the silt dam outlet is larger than the allowable permeability slope, and it needs to be anti-seepage reinforcement; The clay sloping wall with a top width of 5 m and a bottom width of 15 m is the optimal reinforcement scheme. Research results can provide a reference for similar projects.