文献类型：期刊文献

英文题名：Study on the influence of rock bridge angle on the size effect of rock uniaxial compression

作者：Hu, Gaojian[1,2,3];Xie, Zhonghua[1];Xing, Yuan[2];Gu, Yangyong[2];Feng, Haoran[4,5];Sun, Lei[6]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing, Zhejiang, Peoples R China;[2]Huahui Engn Design Grp Co Ltd, Shaoxing, Zhejiang, Peoples R China;[3]Henan Polytech Univ, Sch Energy Sci & Engn, Jiaozuo, Henan, Peoples R China;[4]Shaoxing Daming Elect Power Construct Co Ltd, Shaoxing, Zhejiang, Peoples R China;[5]Shaoxing Power Supply Co, State Grid Zhejiang Elect Power Co Ltd, Shaoxing, Zhejiang, Peoples R China;[6]Yantai Vocat Coll, Dept Intelligent Mfg, Yantai, Shandong, Peoples R China

年份：2024

卷号：19

期号：5

外文期刊名：PLOS ONE

收录：SCI-EXPANDED(收录号：WOS:001276406500011)、、Scopus(收录号：2-s2.0-85194149080)、WOS

基金：This work was supported by the Projects: Yantai Blue Ocean Mine Engineering Design Co., Ltd. entrusted project (K22-01430000-011, K23-01430000-016), International Scientific and Technological Cooperation Base for Geological Disaster Prevention of Zhejiang Province (IBGDP-2022-05), School-based scientific research project of Yantai Vocational College (2021XBYB006), Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (ZGRMG-2019-07). Those funders had important roles in the study design, data collection and analysis.

语种：英文

外文摘要：As a basic parameter of rock, the rock bridge angle plays an important role in maintaining the stability of rock masses. To study the size effect of rock bridge angle on the uniaxial compressive strength of rocks, this paper adopts the principle of regression analysis and combines numerical simulation to carry out relevant research. The research results indicate that: (1) the uniaxial compressive strength decreases with the increase of the rock bridge angle, showing a power function relationship; (2) The uniaxial compressive strength decreases with the increase of rock size and tends to stabilize when the rock size is greater than 350 mm, showing a significant size effect. (3) The fluctuation coefficient of compressive strength increases with the increase of rock bridge angle and decreases with the increase of rock size; When the rock size is 350 mm, the fluctuation coefficient is less than 5%; (4) The characteristic compressive strength and characteristic size both increase with the increase of the rock bridge angle.