In order to study the influence of dry-wet cycle and loading sequence on the compression characteristics of sandstone-mudstone particle mixture,unidirectional compression tests were carried out for sandstone-mudstone particle mixture treated under different dry-wet cycle times,soaking time and water temperature.The results show that the com-pressibility of sandstone-mudstone particle mixture increases with the increase of dry-wet cycles,soaking time and water temperature.The compressibility presents logarithmic relationship with the number of dry-wet cycles,power function re-lationship with soaking time and linear relationship with water temperature,and the corresponding calculation formula of compressibility is derived.The experimental results and theoretical analysis show that the compressive capacity of loading after wet and dry cycling is greater than that of loading after wet-dry cycling.
关键词
砂泥岩混合料/压缩特性/试验方法/干湿循环/浸水时间/水温
Key words
sandstone-mudstone particle mixture/compression characteristics/test method/dry-wet cycle/soaking time/water temperature
维普
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