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Evaluating the structure and mechanical properties of deep rock masses based on drilling process monitoring and borehole televiewer

文献类型：期刊论文

作者Li, Shaojun1; Xu, Huaisheng1,2; Zheng, Minzong1; Xiao, Yaxun1
刊名BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
出版日期2023-10-01
卷号82期号:10页码:17
关键词Deep rock engineering Rock mass structure Mechanical property DPM Borehole televiewer Core discing
ISSN号1435-9529
DOI10.1007/s10064-023-03429-4
英文摘要Drilling process monitoring (DPM) has been rarely adopted in deep rock engineering for structure identification and mechanical property estimation of rock masses. Furthermore, it is difficult to accurately identify complex structures based solely on drilling parameters. To address these issues, we present an integrating method of DPM, borehole televiewer, and Hoek-Brown strength criterion. This method was applied in Jinping deep tunnel with a buried depth of 1900 m and homogeneous lithology. Another comparison test was carried out in Hongtoushan Copper Mine with heterogeneous lithology. The results showed that the drilling speed is sensitive to changes in the rock mass structure. The drilling speed of intact cores (5.26-6.74 cm/min) is the highest, followed by discing cores (5.12-5.85 cm/min) and then jointed cores (3.50-4.62 cm/min). In addition, the drilling speed responses to discing and jointed cores similarly, with sudden change characteristics, which may indicate the location and range of structure planes in the borehole. Finally, the drilling speed response varies according to the surrounding rock conditions. The drilling speed is positively correlated with mechanical properties when the rock mass has a homogeneous lithology and is negatively correlated when the rock mass has a transformed lithological zone. This study provides important support for using DPM to identify the rock mass structure and mechanical properties for deep engineering projects.
资助项目The authors would like to thank Prof. Zhongqi Yue and Mr. Chan Tai Chau for their help on the DPM technology.
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:001073154000002
出版者SPRINGER HEIDELBERG
源URL[http://119.78.100.198/handle/2S6PX9GI/39535]  
专题中科院武汉岩土力学所
通讯作者Li, Shaojun
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Shaojun,Xu, Huaisheng,Zheng, Minzong,et al. Evaluating the structure and mechanical properties of deep rock masses based on drilling process monitoring and borehole televiewer[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2023,82(10):17.
APA Li, Shaojun,Xu, Huaisheng,Zheng, Minzong,&Xiao, Yaxun.(2023).Evaluating the structure and mechanical properties of deep rock masses based on drilling process monitoring and borehole televiewer.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,82(10),17.
MLA Li, Shaojun,et al."Evaluating the structure and mechanical properties of deep rock masses based on drilling process monitoring and borehole televiewer".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 82.10(2023):17.

入库方式： OAI收割

来源：武汉岩土力学研究所

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