Study on Model Structure and Mechanical Anisotropy of Columnar Jointed Rock Mass Based on Three-Dimensional Printing Method

doi:10.1061/(ASCE)GM.1943-5622.0001854

	Study on Model Structure and Mechanical Anisotropy of Columnar Jointed Rock Mass Based on Three-Dimensional Printing Method
	Xia, Yingjie 3,4; Zhang, Chuanqing 3,4; Zhou, Hui 3,4; Shan, Zhigang 1; Liu, Ning 1; Su, Guoshao 2; Gao, Yang 3,4; Singh, Hemant Kumar 3,4
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2020-11-01
卷号	20 期号:11 页码:13
关键词	Columnar jointed rock mass Three-dimensional printing Structural reconstruction Mechanical anisotropy Failure characteristics
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0001854
英文摘要	The natural structure of columnar jointed rock mass (CJRM) is complex because it was formed during the cooling process of volcanic rock. In CJRM, both the structures of columns and columnar joints are oriented, and the exact mechanical properties are difficult to obtain due to the lack of testing samples that correspond to natural rock masses. Therefore, this brings challenges for underground engineering construction related to CJRM. The reconstruction of CJRM is an effective method that can be used to resolve this problem. However, using an artificial method means that it is difficult to consider the detail of structures, such as irregular columns, columnar joints, and microcracks in columns. With the development of 3D printing (3DP) technology, a useful method for the accurate reconstruction of CJRM has been provided. In this paper, based on laboratory and in situ tests, the structural characteristics and mechanical properties of CJRM in Baihetan Hydropower Station will be investigated. Then, based on the accurate structural reconstruction of CJRMthat considers the similarity constant between in situ and laboratory tests, the mechanical anisotropy and failure modes of 3DP CJRM specimens will be investigated. The results show that 3DP is an effective method for reconstructing the structures of CJRMand that it is necessary to consider the detail of the structures, such as the irregularity of columns, columnar joints, and microcracks. In addition, the unfavorable loading angles between the axis of the column and loading direction were obtained. The 3DP results presented in this paper could provide a reference to help understand the structural characteristics of CJRM. (C) 2020 American Society of Civil Engineers.
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] ; Fundamental Research Funds for the Central Universities[DUT20RC(3)011]
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000618635500016
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25799]
专题	中科院武汉岩土力学所
通讯作者	Zhang, Chuanqing
作者单位	1.Power China Huadong Engn Corp, East China Invest & Design Inst, Hangzhou 310014, Zhejiang, Peoples R China 2.Guangxi Univ, Coll Civil Engn & Architecture, Nanning 530004, Guangxi, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xia, Yingjie,Zhang, Chuanqing,Zhou, Hui,et al. Study on Model Structure and Mechanical Anisotropy of Columnar Jointed Rock Mass Based on Three-Dimensional Printing Method[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2020,20(11):13.
APA	Xia, Yingjie.,Zhang, Chuanqing.,Zhou, Hui.,Shan, Zhigang.,Liu, Ning.,...&Singh, Hemant Kumar.(2020).Study on Model Structure and Mechanical Anisotropy of Columnar Jointed Rock Mass Based on Three-Dimensional Printing Method.INTERNATIONAL JOURNAL OF GEOMECHANICS,20(11),13.
MLA	Xia, Yingjie,et al."Study on Model Structure and Mechanical Anisotropy of Columnar Jointed Rock Mass Based on Three-Dimensional Printing Method".INTERNATIONAL JOURNAL OF GEOMECHANICS 20.11(2020):13.