贵州施秉白云岩溶蚀特性及孔隙特征实验研究

he research subject of the paper is dolomite in Shibing Guizhou Province. The authors analyze it's the dissolution characteristics and pore characteristics from macro-micro view. The results showed that: 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 sample. Under the same circumstances of grain dissolution principal, the specific amount of dolomite with CaO, MgO and CO2 content, the higher the content of the three, in general, the greater amount of erosion; (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 particle size is bigger, the porosity higher, and the better connectivity, more beneficial solution seep into pore, and the amount of dissolution is greater;(4) Dissolution of dolomite is the result of many factors, all factors must be separated, one by one to make a detailed analysis from the macro and micro view, and comprehensive study, will know more about rule of the Karst development.