荆江大堤安全度模糊综合评判方法研究

Fuzzy comprehensive method for evaluation of safety of Jingjiang Dyke

通过对荆江大堤工程管理现状和国内外堤防工程安全评价成果的研究,并综合考虑大堤的工程地质条件、河势稳定性、渗流稳定性、滑动稳定性、应力分布及应力水平、附加位移变形、地震液化可能状态等影响堤防安全度的主要因素,应用模糊数学理论,建立了堤防工程安全评判的理论框架,构建了堤防工程综合评判的体系和综合评判模型,得出了荆江大堤安全性综合评判结果.结果表明,52个堤段的综合评判结论与大堤现状比较吻合.

Based on analysis of the management of Jingjiang Dyke and worldwide safety evaluation results of other dykes around the world, a theoretical framework and comprehensive evaluation system were established using fuzzy mathematics theory and taking into account influencing factors, such as geological conditions, stability of river regime, seepage and sliding stability, stress distribution and level, additional displacement deformation and seismic liquefaction regions. Comprehensive evaluation results of the safety of Jingjiang Dyke indicate that the results of 52 dyke sections accord with the present status.