中南大学学报（自然科学版）2017，Vol.48Issue(8)：2210-2216,7.DOI:10.11817/j.issn.1672-7207.2017.08.031
板岩各向异性蠕变特性试验研究
Experimental study on creep characteristics of anisotropic slate
摘要
Abstract
A set of uniaxial compression creep experiments of typical slate specimens which come from Jiangxi Jiujiang region were performed using RYL-600 microcomputer control rock shear rheometer.The effects of internal inherent anisotropy on creep mechanical properties of slate were studied according to the experimental data.The results show that all the strain-time curves of specimens exhibite obvious instantaneous elastic stage,transient creep stage and steady state creep stage while do not exhibit the accelerated creep stage,the creep failure occurs suddenly under the steady stress level,showing obvious brittle failure characteristics.With the change of the bedding plane angle,creep damage types also change,including shear failure and tensile failure.Under the initial stress level,the instantaneous elastic strain is the largest when the bedding plane angle is 60°,while it is the smallest when the angle is 90°,and with the increase of stress level,the instantaneous elastic modulus gradually increases and stabilizes,while the instantaneous elastic strain decreases gradually.Creep rate increases with the increase of stress level,creep rate of the specimen with bedding planes inclination angle of 60° is the fastest among all specimens under high stress condition.关键词
板岩/蠕变/各向异性/层理面倾角Key words
slate/creep/anisotropy/inclination of bedding分类
建筑与水利引用本文复制引用
黄旻鹏,李江腾,张建,王聪聪,王思青..板岩各向异性蠕变特性试验研究[J].中南大学学报（自然科学版）,2017,48(8):2210-2216,7.基金项目
长江科学院开放研究基金资助项目(CKWV2016390/KY) （CKWV2016390/KY）
国家自然科学基金资助项目(51374246) （51374246）
湖南省水利厅科技项目(30227) （30227）
中南大学硕士生自主探索创新项目(2016zzts453)(Project(CKWV2016390/KY) supported by the Open Research Program of Changjiang River Scientific Research Institute （2016zzts453）
Project(51374246) supported by the National Natural Science Foundation of China （51374246）
Project(30227) supported by the Science and Technology Program of Water Resources Department of Hunan Province （30227）
Project(2016zzts453) supported by the Master Independent Explored Innovation of Central South University) （2016zzts453）
