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针对冻结法凿井工程面临的表土层厚度不断增加,而现有冻结壁的设计理论滞后于工程实践的问题,由于冻结壁是属于水、温度、应力、位移多场耦合的非线性问题,且冻结法凿井工程本身特殊力学行为(有压冻结-开挖卸载-支护加载),理论和数值模拟研究进展不能满足工程要求的现状.依据相似理论的物理模拟试验研究是目前条件最可能获得相对准确规律的研究手段,综述了国内外关于深厚表土层中冻结壁物理模拟试验的研究历史、现状以及存在的问题等,同时提出需要在以后研究中需要重点关注的问题.
However, the design theory of the existing frozen wall lags behind that of engineering practice. Because the frozen wall belongs to the non-linear problem of multi-field coupling of water, temperature, stress and displacement, and The progress of theoretical and numerical simulation can not meet the requirements of the project due to the special mechanical behavior of the freezing sinking project itself (pressure freezing-excavation unloading-support loading). The physical simulation experiment based on similarity theory is the most probable condition Relatively accurate law of the means of research, summarized the domestic and foreign research on the frozen soil physical simulation experiments in the history, status quo and existing problems, at the same time put forward the need for future research need to focus on the issue.