基于层次分析法的坝基帷幕灌浆方案评估探析

Study of dam foundation curtain grouting scheme evaluation based on analytic hierarchy process

本文针对坝基施工中帷幕灌浆方案的优选问题,通过构建基于层次分析法的青山水库主坝坝基防渗体帷幕灌浆评估指标体系,建立涵盖综合目标层、工具目标层以及指标属性层与灌浆方案层的层级分布架构。采用成对比较矩阵来确定各指标层及各要素的权重以及多种帷幕灌浆方案的评估值,通过检验赋值的合理性以及比较矩阵的一致性,得出青山水库主坝坝基防渗体帷幕灌浆方案综合评估排序,从而确定综合技术可行性与经济合理性的最优坝基帷幕灌浆方案。本研究可为同类型坝基帷幕灌浆实施方案的评估及优选提供决策依据。

The hierarchical distributed architecture covering comprehensive target layer, tool target layer, index property layer and grouting scheme layer is constructed aiming at optimization issue of curtain grouting scheme in dam foundation construction through constructing Qingshan Reservoir main dam foundation anti-seepage body curtain evaluation indicator system based on analytic hierarchy process. Paired comparison matrix is used for determining each index layer and weight of element as well as evaluation values of various curtain grouting scheme. Comprehensive evaluation sequence of Qingshan Reservoir main dam foundation anti-seepage body curtain grouting scheme is obtained through testing the rationality of assignment and the consistency of comparison matrix, thereby determining the best dam foundation curtain grouting scheme integrating technical feasibility and economic rationality. The study can provide decision-making basis for evaluating and optimizing similar dam foundation curtain grouting implementation schemes.