中南大学学报（自然科学版）2018，Vol.49Issue(5)：1197-1202,6.DOI:10.11817/j.issn.1672-7207.2018.05.022
横观各向同性岩石临界应变能释放率试验研究
Experimental study on critical strain energy release rate of transversely isotropic rock
摘要
Abstract
To explore the anisotropy of crack propagation for layered slate, fracture mechanics parameters (elastic modulus, shear modulus, Poisson ratio, compressive strength) of transversely isotropic slate were tested by constant displacement load relaxation method of double torsion using MTS insight. Critical strain energy release rate was obtained. The relationship among release rate of critical strain energy, angle of bedding, compression strength and elastic modulus were discussed according to the analysis of test results. The results show that critical strain energy release rate decreases and then increases with the increase of angle of bedding because of bedding structure of slate. Critical strain energy release rate reaches the minimum in the middle and the maximum on the two sides, which presents a U change rule. Release rate of critical strain energy increases with the increase of compression strength and elastic modulus. The curve of release rate-compression strength of critical strain energy and the curve of release rate- elastic modulus of critical strain energy accord with linear rules.关键词
横观各向同性/临界应变能释放率/层理角度/抗压强度/弹性模量Key words
transversely isotropic/release rate of critical strain energy/angle of bedding/compression strength/elastic modulus分类
建筑与水利引用本文复制引用
高吉超,李江腾,王慧文..横观各向同性岩石临界应变能释放率试验研究[J].中南大学学报（自然科学版）,2018,49(5):1197-1202,6.基金项目
国家自然科学基金资助项目(51374246)(Project(51374246)supported by the National Natural Science Foundation of China) （51374246）
