礁灰岩孔隙结构表征及关键孔隙节点识别研究

doi:10.13722/j.cnki.jrme.2022.0571

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Abstract As a natural porous medium，coral reef limestone owns a complex pore structure，which lays great influences on its macroscopic mechanical and seepage properties. In order to accurately characterize the pore structure of coral reef limestone and explore the structural features of its pore network，this paper constructed digital 3D models and equivalent pore network models by combining CT scanning and 3D reconstruction techniques for coral reef limestone samples collected from Hainan. The spatial features of pore structure distribution of the two coral reef limestones were analyzed，and statistical analyzes were performed on pore structural parameters including porosity，pore throat size and coordination number. A topological network model of the internal pore structure was constructed to carry out complex network analyses，whereby the overall and individual property indicators of the core reef limestone pore network were obtained. The key nodes affecting the network characteristics were identified. The study shows that the coral reef limestone has high porosity and non-homogeneity，and the distributions of both pore throat size and coordination number conform to the log-normal distribution rule. The internal pore network is well connected with a high degree of compactness，and there exist some key pore nodes with high importance，which have a greater influence on the overall network characteristics.

Key words： rock mechanics coral reef limestone CT scanning pore structure complex network analysis key pore nodes

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	Articles by authors
	XU Jun1
	2
	HUANG Xin1
	2
	WANG Junpeng1
	2
	ZHANG Zixin1
	2
	LI Yun3

Cite this article:

XU Jun1,2,HUANG Xin1, et al. Characterization of coral reef limestone?s pore structure and identification of key pore nodes[J]. , 2023, 42(S1): 3355-3366.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0571 OR https://rockmech.whrsm.ac.cn/EN/Y2023/V42/IS1/3355

[1] 汪稔，宋朝景，赵焕庭，等. 南沙群岛珊瑚礁工程地质[M]. 北京：科学出版社，1997：1–169.(WANG Ren，SONG Chaojing，ZHAO Huanting，et al. Coral reef engineering geology of Nansha Islands[M]. Beijing：Science Press，1997：1–169.(in Chinese))
[2] 许宁. 浅谈珊瑚礁岩土的工程地质特性[J]. 岩土工程学报，1989，11(4)：81–88.(XU Ning. Discussion on engineering geological properties of coral reefs[J]. Chinese Journal of Geotechnical Engineering，1989，11(4)：81–88.(in Chinese))
[3] 王瑞，余克服，王英辉，等. 珊瑚礁的成岩作用[J]. 地球科学进展，2017，32(3)：221–233.(WANG Rui，YU Kefu，WANG Yinghui，et al. The diagenesis of coral reefs[J]. Advances in Earth Science，2017，32(3)：221–233.(in Chinese))
[4] 钟毓，汪稔，李琦，等. 珊瑚礁灰岩物性特征及工程性质研究进展[J]. 科技导报，2020，38(20)：57–70.(ZHONG Yu，WANG Ren，LI Qi，et al. Physical and engineering characteristics of reef limestone: A review[J]. Science and Technology Review，2020，38(20)：57–70.(in Chinese))
[5] 郑坤，孟庆山，汪稔，等. 珊瑚礁灰岩工程地质特性研究新进展[J]. 海洋地质与第四纪地质，2020，40(1)：42–49.(ZHENG Kun，MENG Qiangshan，Wang Ren，et al. Advances in study of engineering geological characteristics of coral reef limestone[J]. Marine Geology and Quaternary Geology，2020，40(1)：42–49.(in Chinese))
[6] 王新志，汪稔，孟庆山，等. 南沙群岛珊瑚礁礁灰岩力学特     性研究[J]. 岩石力学与工程学报，2008，27(11)：117–122.(WANG Xinzhi，WANG Ren，MENG Qingshan，et al. Research on characteristics of coral reef calcareous rock in Nansha Islands[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(11)：117–122.(in Chinese))
[7] 孟庆山，范超，曾卫星，等. 南沙群岛珊瑚礁灰岩的动态力学性能试验[J]. 岩土力学，2019，40(1)：183–190.(MENG Qingshan，FAN Chao，ZENG Weixing，et al. Tests on dynamic properties of coral-reef limestone in South China Sea[J]. Rock and Soil Mechanics，2019，40(1)：183–190.(in Chinese))
[8] 唐国艺，郑建国. 东南亚礁灰岩的工程特性[J]. 工程勘察，2015，43(6)：6–10.(TANG Guoyi，ZHENG Jianguo. Engineering properties of reef calcareous rock in Southeast Asia[J]. Geotechnical Investigation and Surveying，2015，43(6)：6–10.(in Chinese))
[9] 刘海峰，朱长歧，崔翔，等. 礁灰岩嵌岩桩的端承特性试验研究[J]. 岩石力学与工程学报，2018，37(增2)：4 348–4 355.(LIU Haifeng，ZHU Changqi，CUI Xiang，et al. Experimental research on end bearing characteristics of rock-socketed pile in reef limestone[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(Supp.2)：4 348–4 355.(in Chinese))
[10] 郝乐伟，王琪，唐俊. 储层岩石微观孔隙结构研究方法与理论综述[J]. 岩性油气藏，2013，25(5)：123–128.(HAO Lewei，WANG Qi，TANG Jun. Research progress of reservoir microscopic pore structure[J]. Lithologic Reservoirs，2013，25(5)：123–128.(in Chinese))
[11] YU B，FAN W，FAN J H，et al. X-ray micro-computed tomography ( –CT) for 3D characterization of particle kinematics representing water-induced loess micro-fabric collapse[J]. Engineering Geology，2020，279：105859.
[12] 王刚，沈俊男，褚翔宇，等. 基于CT三维重建的高阶煤孔裂隙结构综合表征和分析[J]. 煤炭学报，2017，42(8)：2 074–2 080. (WANG Gang，SHEN Junnan，CHU Xiangyu，et al. Characterization and analysis of pores and fissures of high-rank coal based on CT three-dimensional reconstruction[J]. Journal of China Coal Society，2017，42(8)：2 074–2 080.(in Chinese))
[13] 张巍，梁小龙，唐心煜，等. 显微CT扫描南京粉砂空间孔隙结构的精细化表征[J]. 岩土工程学报，2017，39(4)：683–689. (ZAHNG Wei，LIANG Xiaolong，TANG Xinyu，et al. Fine characterization of spatial pore structure of Nanjing silty sand using micro-CT[J]. Chinese Journal of Geotechnical Engineering，2017，39(4)：683–689.(in Chinese))
[14] 张标，雷学文，魏厚振，等. 基于CT扫描试验的珊瑚骨架灰岩孔隙结构特征研究[J]. 工程地质学报，2021，29(6)：1 692–1 699. (ZHANG Biao，LEI Xuewen，WEI Houzhen，et al. Study on pore structure characteristics of coral skeleton limestone based on CT scans[J]. Journal of Engineering Geology，2021，29(6)：1 692–      1 699.(in Chinese))
[15] 周博，库泉，吕珂臻，等. 钙质砂颗粒内孔隙三维表征[J]. 天津大学学报：自然科学与工程技术版，2019，52(增1)：41–48. (ZHOU Bo，KU Quan，LV Kezhen，et al. Three-dimensional characterization of inner pores in calcareous sand particles[J]. Journal of Tianjin University：Science and Technology，2019，52(Supp.1)：41–48.(in Chinese))
[16] 马林建，刘华超，张巍，等. 不同埋深珊瑚礁灰岩物理力学特性宏细观研究[J]. 高校地质学报，2021：1–9.(MA Linjian，LIU Huachao，ZHANG Wei，et al. Macroscopic and mesoscopic investigation on the physical and mechanical characteristics of coral limestone at different depths[J]. Geological Journal of China Universities，2021：1–9.(in Chinese))
[17] FALCONER K. Fractal geometry：mathematical foundations and applications[M]. [S. l.]：John Wiley and Sons，2004：41–47.
[18] 刘向君，朱洪林，梁利喜. 基于微CT技术的砂岩数字岩石物理实验[J]. 地球物理学报，2014，57(4)：1 133–1 140.(LIU Xiangjun，ZHU Honglin，LIANG Lixi. Digital rock physics of sandstone based on micro CT technology[J]. Chinese Journal of Geophysics，2014，57(4)：1 133–1 140.(in Chinese))
[19] FAN N，WANG J，DENG C，et al. Quantitative characterization of coal microstructure and visualization seepage of macropores using CT-based 3D reconstruction[J]. Journal of Natural Gas Science and Engineering，2020，81：103384.
[20] 元永国，王瑞，范楠. 基于micro-CT扫描的孔裂隙结构表征及渗流模拟[J]. 煤矿安全，2021，52(8)：15–20.(YUAN Yongguo，WANG Rui，FAN Nan. Characterization of pore-fracture structure and seepage simulation based on micro-CT scanning[J]. Safety in Coal Mines，2021，52(8)：15–20.(in Chinese))
[21] 吴建军. 城市交通网络拓扑结构复杂性研究[博士学位论文][D]. 北京：北京交通大学，2008.(WU Jianjun. Studies on the complexity of topology structure in the urban traffic network[Ph. D. Thesis][D]. Beijing：Beijing Jiaotong University，2008.(in Chinese))
[22] 黄昕，靳健，林作忠，等. 基于复杂网络的城市深部空间火灾灾害链分析及智慧减灾方法研究[J]. 应用基础与工程科学学报，2021，29(5)：1 280–1 291.(HUANG Xin，JIN Jian，LIN Zuozhong，et al. Complex network-based analysis on fire disaster chain of urban deep underground space and intelligent disaster mitigation measures[J]. Journal of Basic Science and Engineering，2021，29(5)：1 280–      1 291.(in Chinese))
[23] LV L，CHEN D，REN X L，et al. Vital nodes identification in complex networks[J]. Physics Reports，2016，650：1–63.
[24] NEWMAN M E J. Communities，modules and large-scale structure in networks[J]. Nature Physics，2012，8(1)：25–31.
[25] 薛锋，何传磊，黄倩. 成都地铁网络的关键节点识别方法及性能分析[J]. 中国安全科学学报，2019，29(1)：93–99.(XUE Feng，HE Chuanlei，HUANG Qian. Identification of key nodes in Chengdu metro network and analysis of network performance[J]. China Safety Science Journal，2019，29(1)：93–99.(in Chinese))