2Yao F H,Shao G F,Yamada H,et al.Development of an automatic concrete-tunnel inspection system by an autonomous mobile robot[A].Robot and Human Interactive Communication,2000-09:74-79.
6Selig E T, Waters J M. Track Geotechnology and Substructure Management [ M]. New York.. Thomas Telford,1994.
7佐藤吉彦.新轨道力学[M].徐涌,等,译.北京:中国铁道出版社,2001.
8Lim W L,McDowell G R. Discrete element modelling of railway ballast [J ]. Granular Matter, 2005,7 (1) : 19-29.
9Lobo-Guerrero S, Vallejo L E. Discrete element me- thod analysis of railtrack ballast degradation during cyclic loading [J]. Granular Matter, 2006,8 (3-4): 195-204.
10Hossain Z, Indraratna B, Darve F, et al. DEM analysis of angular ballast breakage under cyclic loading[J], Geomechanics and Geoengineering : An International Journal ,2007,2(3) .. 175-181.
