文献类型：期刊文献

英文题名：Effects of bedding plane dip angle and lithology on the mechanical and micro-failure behavior of stratified rock under uniaxial compression test

作者：Meng, Yaoyao[1,2,3];Chen, Hao[2];Jing, Hongwen[3];Yin, Qian[1,3];Liu, Xiaowei[4];Ding, Ke[1]

机构：[1]Anhui Univ Sci & Technol, State Key Lab Min Response & Disaster Prevent & Co, Huainan 232001, Peoples R China;[2]Shaoxing Univ, Collaborat Innovat Ctr Prevent & Control Mt Geol H, Shaoxing 312000, Peoples R China;[3]China Univ Min & Technol, State Key Lab Intelligent Construct & Hlth Operat, Xuzhou 221116, Peoples R China;[4]Yanan Univ, Xian Innovat Coll, Sch Data Sci & Engn, Xian 710100, Peoples R China

年份：2025

卷号：95

期号：1

外文期刊名：ARCHIVE OF APPLIED MECHANICS

收录：SCI-EXPANDED(收录号：WOS:001390675500003)、、EI(收录号：20250217665135)、Scopus(收录号：2-s2.0-85214428325)、WOS

基金：This work is financially supported by Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology (No. 2023yjrc77), Collaborative Innovation Center for Prevention and Control of Mountain Geological Hazards of Zhejiang Province (No. PCMGH-2023-01), National Natural Science Foundation of China (Nos. 52074259, 51904290, 52174092), Yunlong Lake Laboratory of Deep Underground Science and Engineering Project (No. 104023002), School Research Project of Xi'an Innovation College of Yan'an University (No. 2022XJKY-9), and Xuzhou Science and Technology Project (No. KC21033).

语种：英文

外文关键词：Stratified rock; Micro-failure; Bedding plane; Anisotropy; CT scanning

外文摘要：To investigate the mechanical and micro-failure behavior of stratified rock, a series of uniaxial compression and CT scanning tests of stratified limestone and sandstone at different bedding plane dip angles (alpha) were conducted. The experimental results showed that with the increasing alpha, uniaxial compressive strength (UCS), peak strain (epsilon 1p), Poisson's ratio (mu) of stratified limestone and sandstone all first decreased and then increased, elastic modulus (E) of stratified limestone continuously increased, E of stratified sandstone first decreased and then increased. At different alpha, UCS and E of stratified limestone were larger than that of stratified sandstone, epsilon 1p and mu of stratified limestone were smaller than that of stratified sandstone. For stratified limestone, anisotropy coefficient of mu was the largest and anisotropy coefficient of E was the smallest. For stratified sandstone, anisotropy coefficient of epsilon 1p was the largest and anisotropy coefficient of E was the smallest. Anisotropy degree of stratified limestone and sandstone was approaching for UCS. Anisotropy degree of stratified limestone was larger than stratified sandstone for epsilon 1p and mu. Anisotropy degree of stratified limestone was smaller than stratified sandstone for E. The failure category of stratified limestone and sandstone at different alpha was quite different. Due to differences in failure mode, the morphology and distribution characteristics of micro-cracks along the sample height showed a significant difference. With the increasing alpha, volume fraction (VF) and the maximum area fraction (AF) first decreased and then increased for stratified limestone, and showed no obvious change trend for stratified sandstone. At alpha = 0 degrees, 30 degrees, 90 degrees, VF and the maximum AF of stratified limestone were significantly larger than that of stratified sandstone. At alpha = 60 degrees, VF and the maximum AF of stratified sandstone were larger than that of stratified limestone.