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随着冻土研究的日益深入,迫切需要对土的冻结特性试验实施有效的边界条件控制,并进行多因素综合试验和短缩试验周期。由于室内冻土试验的模拟相似律目前尚不完善,在“水、土、温、压”等实际物理过程方面的模拟相似关系尚未完全建立,因而对冻土的室内模拟试验提出了更高、更精确的试验边界条件的控制要求。过去在大型低 温室内进行冻土模拟试验,工作条件恶劣,而所需的检测元件和仪器设备均需在低温条件下工作,给某些边界的控制造成困难,如对开敞系的水源补给和迁移水量的测量就难以实现。为了解决上述困难,使室内冻土模拟试验技术向常规化、标准化、自动化方向
With the deepening of research on frozen soil, it is urgent to carry out effective control of boundary conditions on soil freezing characteristics test, and conduct multi-factor comprehensive test and shortening test period. Because the simulated similarity law of the indoor frozen soil test is not perfect at present, the simulated similarity relationship in the actual physical processes such as “water, soil, temperature and pressure” has not been fully established, so the indoor simulation test of frozen soil is put forward higher, More accurate test boundary conditions control requirements. In the past in a large low-temperature indoor frozen soil simulation test, poor working conditions, and the required test components and equipment are required to work under low temperature conditions, to some border control difficulties, such as the open source of water supply and The measurement of migratory water is difficult to achieve. In order to solve the above difficulties, the indoor frozen soil simulation test technology to the conventional, standardized, automated direction