摘要
在室内崩解试验和大气条件模拟的渐进崩解试验中,通过跟踪崩解过程物碎屑的颗粒级别变化发现,软岩膨胀崩解过程是一个多重分形过程。在崩解达到一定程度后,崩解碎屑物的颗粒级别不再发生变化,软岩吸水膨胀崩解停止,此时崩解物的分数维亦达到一个不再变化的临界值。该临界值可用来定量表征软岩崩解的机理。该结论对工程实际具有指导意义。
Through grain-size analysis of scrap for soft rock that was produced during test of collapsing in laboratory and test of gradual collapsing in field atmospheric condition; it was found that absorbing water and collapsing progress of soft rock is also a progress that fractal dimension of soft rock scrap change successively. When collapsing of soft rock arrived to some extent, grade of scrap of soft rock collapsed is no more change; absorbing water and collapsing of soft rock stopped; fractal dimension of scrap of soft rock collapsed incline to a critical value. The critical value opens out fractal mechanics of soft rock when it swells and collapses after absorbing water. The above-mentioned conclusion exists a guidance significance to engineering.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2005年第5期728-732,共5页
Rock and Soil Mechanics
基金
湖南大学人才基金(No.531103011143)
自然科学基金(No.521101619)。
关键词
软岩
膨胀崩解
分数维
碎屑物
soft rock
swell and collapse
fractal dimension
scrap
