水土保持学报2017，Vol.31Issue(6)：127-133,7.DOI:10.13870/j.cnki.stbcxb.2017.06.022
紫色母岩在不同酸环境中的崩解分维特征
Disintegration Characteristics of Purple Rock Based on Fractal Dimension Under Different Acid Environment
摘要
Abstract
To explore the effects of acid environment on the disintegration characteristics of purple parent rocks,the similarity principle and the correlation fractal dimension calculation formula were used to investigate the fractal dimension features of purple mudstone disintegration of the Suining group (J3s),the Shaximiao group (J2s) and the Penglaizhen group(J3P) under different pH conditions.Therefore,24 times of static disintegration tests were carried out for these rock samples.The results showed that the pH value played an important role in the disintegration of purple mudstone.The lower the pH value was,the stronger the disintegration was.The fractal dimension of J3S and J2S under different pH values approached to 3 after 24 test cycles,and the lower the pH values,the fewer cycles to obtain the stable fractal dimension,while that of J3P didn't reach the stable fractal dimension.Fractal dimension had no significant differences among different acid treatments in the preliminary stage (P＞0.05),but had significant differences (P＜0.05) in the middle-later period.Furthermore,the differences of the fractal dimension under different acid treatments of each mudstone group varied with the disintegration stage.The disintegration rate of purple rock increased with increasing acidity,resulting from that most of the mineral composition of purple rock could not dissolve in water but chemical reaction in acid solutions and produced soluble salts.关键词
紫色母岩/pH/崩解特性/分形维数Key words
purple rock/pH/disintegration characteristics/fractal dimension分类
天文与地球科学引用本文复制引用
赵吉霞,陆传豪,刘刚才..紫色母岩在不同酸环境中的崩解分维特征[J].水土保持学报,2017,31(6):127-133,7.基金项目
国家自然科学基金项目(41471232) （41471232）
