The Soft Treatment Method Applicability Study Of Mountain Highway

With the rapid development of our country’s economy, the construction ofhighways developed so fast, and problems involved in soft foundation treatment stoodout. What’s more, because of the the complexity of deformation mechanism and thediversity of its influencing factors, foundation deformation law and treatments ofmountainous soft soil has become an important topic.Currently we have more mature approach in the soft soil foundation treatment,for example: bagged sad well and prepress, plastic drainage broad and prepress,cement mixerpile, Cement Fly-ash Grave, vacuum prepress, pipe pile, high pressurespraying pile. These methods are usually used. Every method has different advantagesand disadvantages. Every method is different from the others at time, economy,conditions of usage and treatment effect.After learning the project " research and demonstration project on guizhouprovince of Guizhou mountainous area highway soft foundation treatment keytechnology ", on the basis of the existing research of soft soil foundation, the paperanalyzed and summarized the definition, the distribution and the methods of soft soilin Guizhou. With experience of construction in Guizhou area, this article compare andanalyse these usual soft soil foundation treatments at time, economy, conditions ofusage and treatment effect. This article’s priority is compare and analyse these usualsoft soil foundation treatments, to provide a reference for design and decision.Theresults of the research do good for improving the quality of guizhou province highwaypavement extending pavement life and is of great practical value.