Distribution Characteristics and Engineering Effects of the Moraine Layer in Northwest Yunnan Region
Relying on the construction of railway and highway engineering,on the basis of field investigation,indoor and in-situ tests,the distribution characteristics,geotechnical types,material composition,particle composition,degree of cementation and physico-mechanical properties of the moraine layer in the Northwest Yunnan region are mainly studied,and the foundation strength and slope stability of moraine layer are comprehensively evaluated.According to the distribution characteristics of the moraines,the moraines layer can be divided into depression type,terrace type and valley shoulder type.According to material composition,they can be divided into breccia and gravel mixed soil,and they are with good bearing capacity and foundation stability.The uniaxial compressive strength of breccia is higher.The shear strength of crushed stone mixed soil is higher,but the water stability and foundation uniformity are poor.The slope of moraine layer has good local self-stability,but there may be weak interlayers at the bottom and between layers.
Northwest Yunnan regionglaciationmoraine layerdistribution characteristicsengineering effectsgeotechnical type
万方数据
维普
