| The Xiaoxiang superhighway from is an part of the highway from Wuhan to Yinchuan, and one of eight passages of western region developments in the national "15" programs. This text make research on the technology of roadbed's ecosystem fense by testing and analyzing distensibility,saturation and mechanical trait of expansive clay in the 15th parts of Xiaoxiang superhighway. The conclusion can be used for tutoring slope fense of entire highway, and provided gist for similar project.Precipitous slope is a good choice of suction measure, and heat transducer is fit for measuring in open country. Suction is very meaningful to studying on stability of expansive clay slope that has unsaturation. Cranny impacts expansive clay slope,the transformation of suction has important influence on produce and evolvement of cranny.Flexible fense of expansive clay roadbed is used to make up shortage of rigid fense. It is composed by anchor pole and flexible box, and resisting dilatable force force by flexible box. Slope surface use plant for virescence, making plant and fexible fense a whole by plant's root,caudex and leaf, become the fine protection system.A new kind of slope fense method——drainage anchor pole frame beam slope fense has the function of engineering slope fense and original nature landscape. It has good testing effect. This fense assure slope stabilization and the fast instauration of slope plant quilt, attains the human activity gets along with the diapason of the natural environment.The thesis studys on ecosystem fense of expansive clay slope, brings forward characteristic of expansive clay and its affects on distortion and slope fense. In construction we joint engineering fense and ecosystem fense together, formed green ecosystem fense system, attained the stability, safety, ecosystem, environmental protection of purpose. |
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