铁道科学与工程学报Issue(6)：1336-1340,5.
化学腐蚀下红层软岩单轴压缩及声发射特征试验研究
Experiment study on uniaxial co mpression acoustic e mission characteristics of red -bed soft rock in che mical environment
摘要
Abstract
In order to study the micro -damage evolution of the red -bed soft rock under the effect of the acidic water,the rock mass AE technology was used to analyze the damage process of the red -bed soft rock during the uniaxial compression test after it was immersed in acidic water with different pH value.The experiment results show that the acidic water have corrosion effect on the red -bed soft rock corrosion effect.The acoustic emission characteristic of the erosion samples during the damage process is closely related to the evolution characteristics of the crack,such as the generation,extension and cutting through.The AE energy of the red -bed soft rock dur-ing the damage process presents the regularity of rising -peak value -declining -easement,and there is a quiet period before the peak strength.The uniaxial compressive strength of the red -bed soft rock decreased in some degree after it had been immersed in acidic water with different pH value for 95d.With the decrease of the pH value,the chemical erosion increased and the corrosion crack distributed more.The AE of the sample demon-strated much obvious in the compression phase under uniaxial load.The results could be used to provide refer-ences for the long -term stability evaluation of the red -bed soft rock in the erosion areas.关键词
红层软岩/化学腐蚀/声发射/单轴压缩/损伤演化Key words
red -bed soft rock/chemical erosion/acoustic emission/uniaxial compression/damage evolution分类
天文与地球科学引用本文复制引用
李晓宁,巫锡勇,高姝妹,朱宝龙..化学腐蚀下红层软岩单轴压缩及声发射特征试验研究[J].铁道科学与工程学报,2015,(6):1336-1340,5.基金项目
国家自然科学基金资助项目（51348003）；四川省科技支撑计划资助项目 （）
