МОДЕЛИРОВАНИЕ КРИТИЧЕСКОГО ГИДРАВЛИЧЕСКОГО ГРАДИЕНТА, ОПРЕДЕЛЯЮЩЕГО ПРОРЫВ ДАМБЫ Multi-particle model of critical hydraulic gradient for dike piping

Pan Ming, Jun Lu, Xin Cai, Miaoyan Liu, Xudong Chen

Аннотация


Разрушение грунтовых дамб связано с возникновением прорывов, условия возникновения которых в основном определяются критическим гидравлическим градиентом. В работе предлагается мультичастичная модель определения критического гидравлического градиента дамбы. Модель основана на формуле Терцаги и учитывает характеристики распределения частиц грунта по размерам и взаимодействие между частицами и потоком воды. Результаты с использованием глобального анализа чувствительности модели показали, что определяющими факторами возникновения прорывов являются гранулометрический состав и физические характеристики грунта. Лабораторные и натурные испытания подтвердили точность результатов по сравнению с моделью Терцаги.


Литература


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