岩石密度分布规律研究  

STUDY ON DISTRIBUTION LAWS OF ROCK DENSITY

作　　者：王旭宏[1,2] 冯增朝[1] 刘中华[1,2] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024 [2]太原理工大学阳泉学院,山西阳泉045000

出　　处：《岩石力学与工程学报》2009年第A02期3484-3489,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50534030;50404017);山西省自然科学基金资助项目(2009011027-1)

摘　　要：采用最先进的μCT225KVFCB高精度显微CT试验系统,通过对5种岩石试件的显微CT扫描,以射线的衰减系数为目标,研究岩石颗粒密度分布规律。结果表明:岩石细观结构的密度分布整体符合韦伯分布规律,岩石细观颗粒密度分布具有明显的聚集性。90%～95%的岩石颗粒密度分布在很窄的范围,占密度值域的30%～40%。这些主要区域的颗粒密度符合正态分布。Five rock samples are scanned by μCT225KVFCB test system.The most advanced high-precision microscopic CT test system,and the distribution laws of rock density are studied for the target of ray attenuation coefficient.The results show that the rock micro-element density distribution accords with Weibull distribution.It has obvious aggregation for 90%-95% of the element density of rock distributed in a very narrow range,which provides 30%-40% of density range.In these mainly regions,the particle density of rock accords with normal distribution.

关 键 词：岩石力学 概率分布 岩石密度 正态分布 韦伯分布 

分 类 号：TU45[建筑科学—岩土工程]