In the modern traffic and transportation, railway bearing main transport work. The rapid development of national economy in China on railway speed and quality put forward higher request, in this case high-speed railway arises at the historic moment and rapid development has become China's important part of transportation engineering. High-speed train needs a smooth, stable, and the rail foundation under embankment as track structure and embankment foundation, must be in operation conditions will keep post-construction settlement in standards to research, embankment in train loads and roadbed ontology in the settlement of the influence of weight is limited, the roadbed subsidence caused by the roadbed post-construction settlement decision can meet the standard. But the restrictions by geographical conditions, many high-speed railway ?