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黄土液化实例多与现有可液化土地质年代规定不符。采用动三轴弯曲元试验设备对原状黄土饱和过程进行剪切波速跟踪测试,发现黄土浸水、结构先破坏再固结形成新的稳定结构的特点,证明经历过饱和的黄土已不能再视其为饱和前的地质年代。兰州马兰黄土中的黏粒有些是以黏土团块的形式存在,而黏土团块并不影响其他部分粉质土的液化,因此对于此类土应用黏粒含量进行液化判别时,应考虑将黏土团块不计入黏粒含量。
Loess liquefaction examples and the existing liquefiable soil does not match the provisions of the geological age. The dynamic triaxial bending test equipment was used to test the shear wave velocity of the intact loess during the saturation test. It was found that the loess was soaked in water that the structure destroyed and then consolidated to form a new stable structure. It proved that the loess which had been saturated could no longer be regarded as Before the saturation of the geological era. Some clay particles in Malan loess of Lanzhou exist in the form of clay clumps, while clay clumps do not affect the liquefaction of other silty soils. Therefore, when determining the liquefaction of clay content in this kind of clay, Clumps do not count into the clay content.