Abstract:Probability relation between trace length and diameter of rock discontinuities applicable for semi-trace scanline sampling needs to be studied. And five kinds of possibilities are assumed as follows:endpoints of chords are distributed randomly on circumference;midpoints of chords are distributed randomly on a circular diameter;midpoints of chords are distributed randomly in sector;midpoints of chords are distributed randomly both on sectorial arc and diameter;midpoints of chords are distributed randomly on sectorial diameter(generalized model),five models of probability relations between untruncated-uncensored semi-trace length and diameter are acquired. Theory and practice demonstrate that the former four models are not applicable or not quite applicable for semi-trace scanline sampling;while generalized model is quite applicable. The five models supply a gap in previous knowledge of relation between the probability densities of untruncated-uncensored semi-trace length and diameter. When diameters follow uniform distribution pattern,a new diameter algorithm of generalized model is proposed. The new algorithm is applied to Wenchuan earthquake successfully and worth popularizing.
黄 磊,唐辉明,张 龙,葛云峰,章广成,刘佑荣. 适用于半迹长测线法的岩体结构面迹长与直径关系新模型及新算法[J]. 岩石力学与工程学报, 2011, 30(4): 733-745.
HUANG Lei,TANG Huiming,ZHANG Long,GE Yunfeng,ZHANG Guangcheng,LIU Yourong. NEW MODEL OF RELATION BETWEEN ROCK DISCONTINUITIES TRACE LENGTH AND DIAMETER FOR SEMI-TRACE SCANLINE SAMPLING AND NEW ALGORITHM. , 2011, 30(4): 733-745.
SHI G H. Geometric method for the stability analysis of discontinuous rocks[J]. Scientia Sinica,1982,25(3):318-336.
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