2012•Subgrade EngineeringRequires access

Analysis on Type and Genesis of Subgrade Diseases of Highway in Mountainous Area

Yan Zong-ling

Abstract

Highway in mountainous area,due to landform limitation,is often in the circumstances of high fill and deep cut,resulting in many subgrade diseases.Through the deep investigation on the subgrade diseases in the G320 Qujing-Kunming Section and the G108 Yuanmou-Wuding Section,they are classified according to their characteristics and the genesis is analyzed systematically.In addition,lots of cross slope failures of the subgrade existed in the sections investigated are classified and the causes analyzed respectively as well.At last,the meaning of the study on cross subgrade slope failure is discussed.

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Key concepts: Subgrade, Landform, Geotechnical engineering, Geology, Section (typography), Slope failure, Geomorphology, Slope stability