边_滑_坡工程设计中安全系数的讨论_郑颖人文档.pdf

25 9 Vol.25 No.9 2006 9 Chinese Journal of Rock Mechanics and Engineering Sept. 2006 () ( 400041) ()() () () () () P 642 A 1000 6915(2006)09 1937 04 DISCUSSION ON SAFETY FACTORS OF SLOPE AND LANDSLIDE ENGINEERING DESIGN ZHENG Yingren ZHAO Shangyi (Department of Civil Engineering Logistical Engineering University of PLA Chongqing400041 China) Abstract The slope and landslide stability safety factors and landslide thrust force design values in different safety factor definitions are different. It is necessary to make a unified safety factor definition. This paper presents a discussion on several different safety factor definitions. It is reasonable that the slope stability factor definition uses strength reduction method which best conforms to slopes realities. In special circumstances over loading safety factor may better suit the realities. The landslide load-increased factor was adapted in imbalanced thrust force method. This method was adapted in the ground engineering generally. But it does not fit the mechanical condition of landslide. The resistant strength will increase with the load-increased. So this safety factor definition is not suitable to use in slope and landslide engineering design. Key words slope engineeringsafety factorstrength reduction () 1 [1] [2] ()() [3]