文献类型：期刊文献

英文题名：Mechanical performance of a 3D printed scaled mine roadway model

作者：Feng, Xiaowei[1,3];Xue, Fei[2];Carvelli, Valter[3];Zhu, Yichao[2];Zhao, Tongyang[4]

机构：[1]China Univ Min & Technol, Sch Mines, State Key Lab Coal Resources & Safe Min, Xuzhou 221116, Peoples R China;[2]Shaoxing Univ, Coll Civil Engn, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Peoples R China;[3]Politecn Milan, Dept Architecture, Built Environm & Construct Engn, I-20133 Milan, Italy;[4]Shandong Univ Sci & Technol, Coll Energy & Min Engn, Qingdao 266590, Peoples R China

年份：2022

卷号：158

外文期刊名：INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES

收录：SCI-EXPANDED(收录号：WOS:000856550200002)、、EI(收录号：20223312584111)、Scopus(收录号：2-s2.0-85135947732)、WOS

基金：The authors would like to acknowledge the financial support of the National Natural Science Foundation of China (51804296) and China Scholarship Council Grant (CSC#202006425019) .

语种：英文

外文关键词：3D concrete printing; 3D metal printing; Physical modelling; Roadway; Damage scenario

外文摘要：This study exploits 3D concrete printing technology to build a physical model of a mine roadway, 30 times scaled down of its engineering prototype. The supporting arches were also scaled accordingly and then manufactured by 3D metal printing. By assembling the 3D printed concrete model and metal arches, the engineering scenario was reproduced in laboratory for a monotonic increasing loading. Loading was assisted by multiple measurement techniques, namely: digital image correlation (DIC), acoustic emission (AE), strain gauges. Attention was dedicated to the damage initiation and evolution of the 3D printed components. The results highlighted the advantages of the 3D printed model to understand the collapse mechanism of the layered concrete, which involved the collapse nearby the excavation and the failure of the arches. Moreover, the hypotheses and limitations of this study were discussed with advices for future researches. Finally, engineering data from the simulated site were analyzed, and it found that the 3D printed model predicted the actual deformation characteristics of engineering prototype with reasonable accuracy.