Mechanical behavior of structurally reconstructed irregular columnar jointed rock mass using 3D printing

doi:10.1016/j.enggeo.2020.105509

	Mechanical behavior of structurally reconstructed irregular columnar jointed rock mass using 3D printing
	Xia, Yingjie 3,4; Zhang, Chuanqing 3,4; Zhou, Hui 3,4; Hou, Jing 2; Su, Guoshao 1; Gao, Yang 3,4; Liu, Ning 2; Singh, Hemant Kumar 3,4
刊名	ENGINEERING GEOLOGY
	2020-04-01
卷号	268 页码:17
关键词	Columnar jointed rock mass 3D printing Structural reconstruction Failure characteristics Mechanical properties
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2020.105509
英文摘要	Baihetan hydropower station is one the most famous hydroelectric projects in China. The columnar jointed rock mass (CJRM) is widely distributed in this area such as at the dam site and drainage tunnel. The rocks surrounding CJRM are usually unstable due to its discontinuity. Therefore, the investigation of mechanical properties of CJRM is essential to designing relevant structures. In recent years, several previous studies have been conducted to determine the mechanical properties of regular CJRM reconstructed using the mixture of water, cement, and sand. However, few studies have been conducted on the irregular CJRMs formed in nature because of their structural uniqueness. In this study, the mechanical properties of irregular CJRMs reconstructed using 3D printing technology was investigated and verified through laboratory test. First, the sampling window method was adopted to obtain the structural characteristics of columnar jointed basalts (CJBs). After this, the mechanical properties (i.e., uniaxial compressive strength (UCS), uniaxial tensile strength (UTS), peak shear strength, residual shear strength, failure mode, and acoustic emission (AE) characteristics) of the reconstructed and natural CJBs in the laboratory tests were compared based on the similarly constant. The results show that the mechanical properties of irregular CJRM reconstructed using 3D printing are consistent with the in situ specimens when considering the similarly constant. Finally, based on a detailed discussion of the reconstructed and original irregular CJRM, a new method to accurately reconstruct the structure of irregular CJRMs using 3D printing is suggested and verified. This method could be used to design irregular CJRMs in rock engineering.
资助项目	National Natural Science Foundation of China[41807269] ; National Natural Science Foundation of China[U1865203] ; National Natural Science Foundation of China[51427803] ; China Postdoctoral Science Foundation[2018M642959] ; Open Projects of the Research Centre for Safe Mining and Clean Utilisation of Coal Resources, Liaoning Province[LNTU17KF12]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000525398800012
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23982]
专题	中科院武汉岩土力学所
通讯作者	Zhang, Chuanqing; Zhou, Hui
作者单位	1.Guangxi Univ, Coll Civil Engn & Architecture, Nanning 530004, Guangxi, Peoples R China 2.Power China Huadong Engn Corp, Hangzhou 310014, Zhejiang, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Xia, Yingjie,Zhang, Chuanqing,Zhou, Hui,et al. Mechanical behavior of structurally reconstructed irregular columnar jointed rock mass using 3D printing[J]. ENGINEERING GEOLOGY,2020,268:17.
APA	Xia, Yingjie.,Zhang, Chuanqing.,Zhou, Hui.,Hou, Jing.,Su, Guoshao.,...&Singh, Hemant Kumar.(2020).Mechanical behavior of structurally reconstructed irregular columnar jointed rock mass using 3D printing.ENGINEERING GEOLOGY,268,17.
MLA	Xia, Yingjie,et al."Mechanical behavior of structurally reconstructed irregular columnar jointed rock mass using 3D printing".ENGINEERING GEOLOGY 268(2020):17.