Preliminary Study on the Phenomenon and Mechanism of Granite Core Discing in Laboratory Drilling Test
文献类型：期刊论文
| 作者 | Tang, Hua; Liang, Dongcai; Wu, Zhenjun; Zhang, Yonghui; Cheng, Xu |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2023 |
| 卷号 | 13期号:1 |
| 关键词 | low confining pressure laboratory drilling test core discing discing mechanism drilling rate drilling parameters |
| 英文摘要 | It is generally believed that core discing is a rock failure phenomenon under high in-situ stress, and high stress is closely related to the characteristics of core discing. The core drilling tests of intact granite were conducted on the laboratory servo-controlled drilling test platform. It was observed that the granite core showed discing phenomenon at a high drilling rate (>15 mm/min) under no confining pressure (0 MPA). The fluctuation of the drilling parameter was consistent with the core discing section along the core. The failure mode of the core discs was determined by morphology and surface fractal dimension characteristics. Numerical simulation models considering the interaction between the drill bit and the rock were established using ANSYS software. Based on core drilling tests, failure morphology analysis of the core discs, and numerical simulation, the mechanism of granite core discing under low confining pressure is as follows: Tensile failure is caused by the stress concentration of the bit at the core root. The drilling rate is the critical factor affecting core discing. |
| 学科主题 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000909049800001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34745]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; |
| 推荐引用方式 GB/T 7714 | Tang, Hua,Liang, Dongcai,Wu, Zhenjun,et al. Preliminary Study on the Phenomenon and Mechanism of Granite Core Discing in Laboratory Drilling Test[J]. APPLIED SCIENCES-BASEL,2023,13(1). |
| APA | Tang, Hua,Liang, Dongcai,Wu, Zhenjun,Zhang, Yonghui,&Cheng, Xu.(2023).Preliminary Study on the Phenomenon and Mechanism of Granite Core Discing in Laboratory Drilling Test.APPLIED SCIENCES-BASEL,13(1). |
| MLA | Tang, Hua,et al."Preliminary Study on the Phenomenon and Mechanism of Granite Core Discing in Laboratory Drilling Test".APPLIED SCIENCES-BASEL 13.1(2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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