Quantification of the GSI and D values in the Hoek-Brown criterion using the rock quality designation (RQD) and discontinuity surface condition rating (SCR)
文献类型：期刊论文
| 作者 | Xia, Kaizong1,2; Chen, Congxin1,2; Wang, Tianlong1,2; Pang, Hansong1,2; Liu, Xuanting1,2 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2022 |
| 卷号 | 81期号:1页码:21 |
| ISSN号 | 1435-9529 |
| 关键词 | Hoek-Brown criterion Rock mass mechanical parameters Rock quality designation Surface condition rating Disturbance factor Geological strength index |
| DOI | 10.1007/s10064-021-02493-y |
| 英文摘要 | Quantitative determination of the important parameters in the Hoek-Brown (H-B) failure criterion, i.e., geological strength index (GSI) and disturbance factor (D), is essential for increasing the design reliability of rock engineering projects. Thus, the problems that this research addresses are (1) the need for a new quantification of GSI which can adhere to its original definition and (2) the need to quantify D. Specifically, a quantitative expression is established to allow GSI values to be estimated based on the rock quality designation (RQD) and surface condition rating (SCR) of the discontinuities in rock masses (SCR depends on the infilling, weathering, and roughness ratings of the discontinuities in the rock mass). A quantitative method for determining the value of D was subsequently developed based on the improved GSI estimates. A new improved H-B failure criterion for determining the mechanical parameters of the rock mass was thus generated based on the original H-B failure criterion and new improved GSI and D values. The improved H-B failure criterion was tested by applying it to the Chengchao Iron Mine in China. The mechanical parameters of the rock masses in the mine area were estimated using the improved H-B failure criterion (considering the results of rock mechanical laboratory tests and RQD and SCR values derived from a statistical analysis of drill cores and field investigations). The results of long-term in situ monitoring tests further verify the rationality of the deformation and strength parameters estimated using the improved H-B failure criterion. The improved method provides a new way of quickly estimating the mechanical parameters of rock masses when there are insufficient available test data. |
| 资助项目 | Young Scholar Fund of the National Natural Science Foundation of China[42002292] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000728569200003 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/30972]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Xia, Kaizong |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Kaizong,Chen, Congxin,Wang, Tianlong,et al. Quantification of the GSI and D values in the Hoek-Brown criterion using the rock quality designation (RQD) and discontinuity surface condition rating (SCR)[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2022,81(1):21. |
| APA | Xia, Kaizong,Chen, Congxin,Wang, Tianlong,Pang, Hansong,&Liu, Xuanting.(2022).Quantification of the GSI and D values in the Hoek-Brown criterion using the rock quality designation (RQD) and discontinuity surface condition rating (SCR).BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,81(1),21. |
| MLA | Xia, Kaizong,et al."Quantification of the GSI and D values in the Hoek-Brown criterion using the rock quality designation (RQD) and discontinuity surface condition rating (SCR)".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 81.1(2022):21. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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