地球学报Issue(4)：413-418,6.DOI:10.3975/cagsb.2015.04.04
贵州施秉白云岩溶蚀特性及孔隙特征实验研究
The Experimental Study of Dolomite Dissolution and Pore Characteristics in Shibing, Guizhou
摘要
Abstract
With dolomite in Shibing of Guizhou Province as the study object, the authors analyzed its dissolution characteristics and pore characteristics macroscopically and microscopically. Some conclusions have been reached: (1) In many factors that influence the development of Shibing karst, the most fundamental factor is mineral composition, the most critical factor is water, and pore characteristics play a supporting role; (2) The dissolution amount on per unit surface area of superfine grain Shibing dolomite is generally greater than the amount of fine-grained dolomite rock sam-ple. Under the same circumstances of grain dissolution principle, the dissolution amount of dolomite is in positive proportion with CaO and MgO content and the influence of MgO content is larger than that of CaO content. (3) The dissolution rate of Shibing dolomite is not only controlled by particle size of the mineral particles, but also by the internal pore structure characteristics of the rock. The larger the particle size, the higher the porosity, the better the connectivity, the more the beneficial solution seeps into pore, and the greater the amount of dissolution; (4) Dissolution of dolomite is the result of many factors, and all factors must be separated one by one to make a detailed analysis from the macroscopic and microscopic view. On such a basis, more information about the regularity of the karst development can be obtained through a comprehensive study.关键词
贵州施秉/白云岩/溶蚀实验/压汞实验/孔隙特征Key words
Shibing in Guizhou/dolomite/dissolution experiment/mercury experiment/pore characteristics分类
天文与地球科学引用本文复制引用
刘琦,顾展飞,卢耀如,刘之葵..贵州施秉白云岩溶蚀特性及孔隙特征实验研究[J].地球学报,2015,(4):413-418,6.基金项目
本文由国家十二五科技支撑计划重大课题“喀斯特高原峡谷石漠化综合治理技术与示范”(编号:2011BAC09B01)、国家自然科学基金资助项目(编号:41302220 （编号:2011BAC09B01）
41201565)、高等学校博士学科点专项科研基金(编号:20120072120032)和广西自然科学基金创新研究团队项目(编号:2012GXNSFGA060001)联合资助。 （编号:20120072120032）
