Experimental Study on Damage Behavior of Porous Coral Limestone from the Zhongsha Islands, South China Sea
文献类型：期刊论文
| 作者 | Wang, Xinzhi1,2; Wen, Dongsheng1,2; Ding, Haozhen1,2; Shi, Qi2,3 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2023-05-09 |
| 卷号 | 56期号:5页码:3787 |
| ISSN号 | 0723-2632 |
| 关键词 | Zhongsha Islands Coral limestone Crack initiation stress Uniaxial compression test Damage behavior Damage variable |
| 英文摘要 | The damage characteristics of coral limestone are of great significance for guiding the design and construction of offshore engineering such as submarine tunnels and pipelines. The mechanical properties and damage behavior of coral limestone collected from the Zhongsha Islands, South China Sea were investigated based on the results of uniaxial compression tests. A theoretical porosity calculation method was put forward and applied to the coral limestone with a large number of closed internal pores. The failure characteristics of the coral limestone are very different from those of terrestrial rocks because the strength decreases gradually after failure. The threshold stresses of coral limestone were calculated based on the uniaxial compression tests and compared with that of terrigenous rocks. The crack initiation stress is 39-56% of peak strength, similar to that of most terrigenous rocks. The crack damage stress is 70-100% of peak strength, differing greatly from most terrigenous rocks. Coral limestone presents a pattern of shreds after failure due to its unique biological pore structure. In this paper, a new damage variable was proposed to quantitatively analyze the damage behavior of coral limestone. Because coral limestone contains numerous original pores, damage occurs to a large extent in the unstable cracking stage. Good linear correlations were identified between each threshold stress and peak stress, and corresponding empirical formulae were put forward. This paper analyzed the damage characteristics of coral limestone from the Zhongsha Islands, which can provide reference for damage analysis of other porous brittle rocks. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER WIEN |
| WOS记录号 | WOS:000934663900001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35012]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China |
| 推荐引用方式 GB/T 7714 | Wang, Xinzhi,Wen, Dongsheng,Ding, Haozhen,et al. Experimental Study on Damage Behavior of Porous Coral Limestone from the Zhongsha Islands, South China Sea[J]. ROCK MECHANICS AND ROCK ENGINEERING,2023,56(5):3787. |
| APA | Wang, Xinzhi,Wen, Dongsheng,Ding, Haozhen,&Shi, Qi.(2023).Experimental Study on Damage Behavior of Porous Coral Limestone from the Zhongsha Islands, South China Sea.ROCK MECHANICS AND ROCK ENGINEERING,56(5),3787. |
| MLA | Wang, Xinzhi,et al."Experimental Study on Damage Behavior of Porous Coral Limestone from the Zhongsha Islands, South China Sea".ROCK MECHANICS AND ROCK ENGINEERING 56.5(2023):3787. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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