Research Advance on Characteristics of Glacial Tills in Parlung River along Sichuan-Tibet Highway

Abstract:

As glacier relics, glacial tills become special rock body in a planning selected line section of Sichuan-Tibet railway and highway along Parlung River due to its wide gradation, large pore, heterogeneity and permeability, etc, and is associated with glacial geological hazards in the south-east Tibet, which makes the formation mechanism and prevention research on geological hazards in Parlung River basin even more complicated. In this article, based on the analysis on the research results obtained according to the physical property characteristics of glacial tills by scholars in China and abroad in recent years and combing with the field investigation and the results of indoor and outdoor tests, the distribution characteristics, sedimentary structure, physical properties and engineering mechanics properties of glacial tills, as well as the research progress of glacial tills physical mechanics are summed up, 3 key issues in the research on glacial tills in Parlung River basin and the next step of research route are put forward to provide parameter basis for the subsequent glacial tills research and planning and construction management of Sichuan-Tibet highway.