煤矿安全2019，Vol.50Issue(10)：62-65,4.DOI:10.13347/j.cnki.mkaq.2019.10.014
基于FBG-BOTDA的锚杆拉拔试验研究
Study on Pull-out Test of Anchor Bolt Based on FBG-BOTDA Combined Sensing Technology
摘要
Abstract
FBG and PPP-BOTDA are applied to anchor bolt pull-out test in the indoor together, and the test results are verified by ANSYS numerical simulation. The results indicate that the axial stress of bolt under different pull-out loads measured by FBG and BOTDA sensors shows a"negative exponential distribution", and the influence range of load is mainly concentrated within 55 cm from the orifice, which is basically consistent with the results obtained by numerical simulation; FBG-BOTDA combined sensing technology can not only accurately obtain the stress condition of key points, but also comprehensively monitor the stress area and stress distribution of the bolt.关键词
FBG-BOTDA技术/锚杆拉拔试验/数值模拟/轴向应力/锚固深度Key words
FBG-BOTDA technology/anchor bolt pull-out test/numerical simulation/axial stress/anchoring depth分类
矿业与冶金引用本文复制引用
柴敬,秋丰岐,李廷博,张丁丁,刘奇,刘永亮..基于FBG-BOTDA的锚杆拉拔试验研究[J].煤矿安全,2019,50(10):62-65,4.基金项目
国家自然科学基金资助项目(51174280,51804244) （51174280,51804244）
陕西省教育厅科学研究计划资助项目(16JK1488) （16JK1488）
陕西省创新能力支撑计划资助项目(2018TD-038) （2018TD-038）
