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铁路通过某盐湖两岸遇到13公里多粉细砂地层,那里地下水位高,水中还含有大量易溶盐,有的甚至接近卤水,地表松软人行困难,曾发生推土机下陷达一米五深。另外该地段又正处于七～八度的地震区。饱和松砂在动力作用下容易发生液化,作为地基一旦液化将导致建筑物破坏。因此生产上需要研究解决在这种地层上修筑铁路路基受到列车振动或地震有无液化的危险,如有液化可能时应该采取何种防止液化的工程措施。铁道部科学研究院铁建所和铁路第一设计院二总队承担了这项研究任务。为了落实毛主席、周总理和党中央关于加快铁路建设的指示,
Railway through a salt lake encounter more than 13 kilometers of fine powder sand formation, where the groundwater level is high, the water also contains a lot of soluble salt, and some even close to the brine, the surface of the pine is difficult, there have been tractor subsidence of one meter and five deep. In addition the lot is in the earthquake area of seven to eight degrees. Saturated loose sand tends to liquefy under dynamic action, and once it is liquefied it will cause damage to the building. Therefore, it is necessary to study on the production to solve the construction of railway subgrade on this stratum by the train vibration or seismic liquefaction risk, if liquefaction may be taken to prevent liquefaction engineering measures. Iron Research Institute of Iron and Steel Institute and the first railway design institute II assumed the task of this research. In order to implement Chairman Mao, Premier Zhou and the Party Central Committee’s directive on speeding up railway construction,