论文部分内容阅读
广义地来讲,坝基的老化是坝基岩土体(包括帷幕)对大坝修建后坝基应力环境、水环境和化学环境变化的一种回应,而坝基岩—水系统中所发生的水文地球化学作用,考虑到时间因素,则是导致坝基老化的主要原因。为此,根据不同化学组分在坝基岩—水系统中的相互转化规律,建立了坝基老化的正向水文地球化学模型,利用Newton-Raphson法对模型进行求解,并把模型应用到三峡大坝坝基老化分析中验证了模型的可靠性和实用性。
In a broad sense, the aging of dam foundation is a response of dam foundation and soil (including curtain) to changes in stress environment, water environment and chemical environment of dam foundation after the dam is constructed, and hydrogeochemistry occurring in dam foundation-water system Role, taking into account the time factor, it is the main reason leading to dam foundation aging. Therefore, according to the mutual transformation rules of different chemical components in the rock-water system of dam foundation, a forward hydrogeochemical model of the dam foundation was established. The Newton-Raphson method was used to solve the model and the model was applied to the Three Gorges Dam The dam foundation aging analysis verified the reliability and practicability of the model.