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在我国西北地区工程建设中经常遇到粗颗粒盐渍土场地,而粗颗粒盐渍土遇水溶陷的工程特性对建筑、电力、交通设施造成了巨大的安全危害,应引起足够的重视。通过对新疆准东地区某电厂厂区内粗颗粒盐渍土的室内外溶陷试验对比分析得出:现场浸水试验所测溶陷数据与地层分布关系密切;室内试验所测分层土溶陷系数偏高于室外,且粗颗粒含量越高偏差越大;不同土层混合后的回填用盐渍土,室内溶陷试验数据与室外相近。研究结果可为新疆准东地区盐渍土溶陷性分析提供一定参考。
The construction of coarse-grained saline soil is often encountered in the engineering construction in the northwest of China. However, the engineering characteristics of coarse-grained saline soil in water-soluble form have caused great safety hazards to buildings, electric power and transportation facilities, and should be given enough attention. By comparing the indoor and outdoor sag tests of coarse-grained saline soil in a power plant in the eastern part of Xinjiang, it is concluded that the data of the in-situ water immersion test are closely related to the formation distribution. The indoor subsidence coefficient Higher than the outdoors, and the greater the deviation of the coarse particles, the greater the deviation; the saline soil after backfilling of different soil layers, the indoor experimental data of the dissolution are similar to the outdoor ones. The results can provide a reference for the analysis of the salinization of saline soil in the quasi-eastern Xinjiang.