5[5]Stevens W D.Rockfall:a tool for probabilistic analysis,design of remedial measures and prediction of rockfalls[Ph.D.Thesis][D].Toronto:Department of Civil Engineering,University of Toronto,1998.
6[6]Chau K T,Wong R H C,Wu J J.Coefficient of restitution and rotational motions of rockfall impacts[J].International Journal of Rock Mechanics and Mining Sciences,2002,39(1):69-77.
7[7]Azzoni A,La Barbera G,Zaninetti A.Analysis and prediction of rockfalls using a mathematical model[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1995,32(7):709-724.
8[8]Guzzetti F,Crosta G,Detti R,et al.Stone:a computer program for the three dimensional simulation of rock-falls[J].Computers and Geosciences,2002,28:1 079-1 093.
9[10]Peila D,Pelizza S,Sassudelli F.Evaluation of behaviour of rockfall restraining nets by full scale tests[J].Rock Mechanics and Rock Engineering,1998,31(1):1-24.
10Chau K T, Wong R H C, Wu J J. Coefficient of restitution and rotational motions of rockfall impacts[ J ]. International Journal of Rock Mechanics and Mining Science, 2002, 39:69 -77.