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采用室内重型击实试验的方法,分别对低液限粘土、粉质粘土、砂土的纯土试件和土石混合试件进行了不同含水量、不同含石量情况下的剪切波速对比试验。研究了纯土试件在密度一定的条件下试件剪切波速随含水率的变化规律,同时分析了纯土试件含水量对剪切波速影响的机理。大量试验结果表明,土体的含水量与土石混合介质的剪切波速存在显著的相关性,即剪切波速随含水量的增加而减少,同时在土石混合料中这种相关性随着含石量的增大而逐步减弱。研究结果将为土石混合料压实质量剪切波速测试分析技术提供理论依据。
Using indoor heavy-duty compaction test method, the shear wave velocity contrast test of low-liquid-limit clay, silty clay, sand pure soil specimens and earth-rock mixed specimens with different water content and different stone content were carried out respectively . The shear wave velocity of the specimen under constant density was studied with the variation of moisture content. The mechanism of the influence of the moisture content of the pure soil specimen on the shear wave velocity was also studied. The results of a large number of experiments show that there is a significant correlation between the soil water content and the shear wave velocity of soil-rock mixed media. That is, the shear wave velocity decreases with the increase of water content, and the correlation with soil- The amount of increase and gradually weakened. The results will provide a theoretical basis for the test and analysis of compressive mass shear wave velocity of soil-rock mixture.