Risk Prevention on Railway Selection of Chengdu-Guiyang Passenger Dedicated Line

Risks exist in each construction stage of high-speed railway.As the initial work in building a railway line,railway location naturally becomes the focal point of avoiding and reducing risks.Controlling risk from the source is the fundamental guarantee for project safety.Taking Chengdu-Guiyang PDL for example,this paper introduces the principles and methods of risk prevention in each stage of railway location.The principles for railway location of high speed railway in complicated mountainous region have been summarized: we should persist in the design concept of 'safety primary',insist on the principles of engineering geological location of line,and top priority for the site of major engineering projects,by using suitable gradient,fully considering the safety of work site layout and dealing with the relationship between external factors,to ensure that risk is not left behind and the railway construction or operation is in safety.