In-site core disking phenomenon and break mechanism of hard marble: Investigation in 2400 m deep-buried underground laboratory
文献类型：期刊论文
| 作者 | Zhong, Shan2,3; Jiang, Quan2; Liu, Chang1,2; Li, Shao-jun2; Qin, Wei-min2; Zhou, Ji-fang4; Sun, Wen-liang4 |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 27期号:10页码:2959-2970 |
| 关键词 | rock mechanics deep engineering shear break tensile break high geostress |
| ISSN号 | 2095-2899 |
| DOI | 10.1007/s11771-020-4521-9 |
| 英文摘要 | The core-disk phenomenon has been observed generally in the drilling process under high-stress conditions. This paper presents the in-situ experimental study of the coring-disking failure mechanism of marble in an underground cavens with 2400 m depth. Based on the disk samples in several boreholes with different diameters, both macro- and micro-morphological characteristics of core-disks' break surface were analysis, using 3D optical scanning and electron microscope scanning. Moreover, the numerical back analysis was also used to simulate the drilling process for demonstrating the development of core disking. The in-situ experiment results showed that the failure types of core disking consisted of tensile break and shear break, i.e., the shear break usually appears in the edge part of break surface, and tensile break appears in the central part. What's more, the ration of core-disks thickness to borehole diameter is in a relatively stable range. Numerical back analysis indicated this micro asynchronous break of hard marble is induced by high geostress and unloading drill. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000590273400011 |
| 出版者 | JOURNAL OF CENTRAL SOUTH UNIV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25130]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Jiang, Quan |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 3.Swansea Univ, Coll Engn, Swansea SA1 8EP, W Glam, Wales 4.Yalong River Hydropower Dev Co Ltd, Chengdu 610051, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, Shan,Jiang, Quan,Liu, Chang,et al. In-site core disking phenomenon and break mechanism of hard marble: Investigation in 2400 m deep-buried underground laboratory[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2020,27(10):2959-2970. |
| APA | Zhong, Shan.,Jiang, Quan.,Liu, Chang.,Li, Shao-jun.,Qin, Wei-min.,...&Sun, Wen-liang.(2020).In-site core disking phenomenon and break mechanism of hard marble: Investigation in 2400 m deep-buried underground laboratory.JOURNAL OF CENTRAL SOUTH UNIVERSITY,27(10),2959-2970. |
| MLA | Zhong, Shan,et al."In-site core disking phenomenon and break mechanism of hard marble: Investigation in 2400 m deep-buried underground laboratory".JOURNAL OF CENTRAL SOUTH UNIVERSITY 27.10(2020):2959-2970. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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