基于云模型的 CHN-BQ 法完整性指数 Kv 综合评级研究

IF 6.7 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Qi Zhang, Yixin Shen, Hehua Zhu, Xiaojun Wang, Xiaojun Li, Yuechao Pei
{"title":"基于云模型的 CHN-BQ 法完整性指数 Kv 综合评级研究","authors":"Qi Zhang, Yixin Shen, Hehua Zhu, Xiaojun Wang, Xiaojun Li, Yuechao Pei","doi":"10.1016/j.tust.2024.106305","DOIUrl":null,"url":null,"abstract":"The basic quality (CHN-BQ) method is a national standard for rock mass classification in China. The integrity index <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic> in the CHN-BQ method can be determined by the acoustic wave test and quantitative or qualitative approaches, which are flexible and need to be controlled in the determination. This is not sufficiently concise compared with other widely used classifications. Inspired by the RMR (Rock mass rating) classification, a comprehensive rating of <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic> is required to determine the index directly as an alternative approach. In this study, the cloud model is adopted to obtain quantitative results from the qualitative evaluation of the interconnection degree of structural planes. Then the cloud model is further used to obtain quantitative results of rock mass integrity by combining the interconnection degree and the mean spacing of structural planes. Based on quantitative results of the interconnection degree and rock mass integrity and the quantitative correspondence between the volume joint number <ce:italic>J<ce:inf loc=\"post\">v</ce:inf></ce:italic> and <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic>, a comprehensive rating of <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic> for the CHN-BQ method is proposed by referring to the RMR, in which the geometric and physico-mechanical properties of rock mass integrity account for 55 and 45 <ce:italic>points</ce:italic>, respectively. The comprehensive rating is validated by quantitative results of the interconnection degree and rock mass integrity, as well as the effective samples generated by Monte Carlo simulation methods. The results of the comprehensive rating agree well with quantitative results, with a maximum relative error of 11.3%. The <ce:italic>K<ce:inf loc=\"post\">vt</ce:inf></ce:italic> assessed by the 30% quantitative approach and 70% qualitative approach is highly consistent with <ce:italic>K<ce:inf loc=\"post\">vc</ce:inf></ce:italic> determined by the comprehensive rating, with an average relative error of 13%. The results demonstrate that the comprehensive rating of <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic> reasonably combines quantitative and qualitative approaches. To address the fuzzy uncertainty of stepped ratings at rating boundaries, the fuzzy comprehensive rating of <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic> is proposed based on the Mamdani fuzzy inference. Finally, the comprehensive rating of <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic> and its fuzzy version are applied to 95 excavated surfaces which are conducted in detailed geological investigations in the Mingtangshan tunnel. The <ce:italic>K<ce:inf loc=\"post\">vc</ce:inf></ce:italic> and <ce:italic>FK<ce:inf loc=\"post\">vc</ce:inf></ce:italic> obtained by comprehensive rating and fuzzy comprehensive rating of <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic> accurately approximate the measured <ce:italic>K<ce:inf loc=\"post\">vm</ce:inf></ce:italic> by the acoustic wave test, with average relative errors of 9.80% and 7.01%. The rock mass basic quality index BQ and the modified index [BQ] obtained by the comprehensive rating and the fuzzy version almost coincide with those obtained by field tests, with average relative errors of less than 4%. To sum up, the comprehensive rating of <ce:italic>K<ce:inf loc=\"post\">v</ce:inf></ce:italic>, especially after the fuzzy inference, can conveniently classify the rock mass and guide the construction.","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"2 1","pages":""},"PeriodicalIF":6.7000,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study on comprehensive rating of integrity index Kv for CHN-BQ method based on cloud model\",\"authors\":\"Qi Zhang, Yixin Shen, Hehua Zhu, Xiaojun Wang, Xiaojun Li, Yuechao Pei\",\"doi\":\"10.1016/j.tust.2024.106305\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The basic quality (CHN-BQ) method is a national standard for rock mass classification in China. The integrity index <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic> in the CHN-BQ method can be determined by the acoustic wave test and quantitative or qualitative approaches, which are flexible and need to be controlled in the determination. This is not sufficiently concise compared with other widely used classifications. Inspired by the RMR (Rock mass rating) classification, a comprehensive rating of <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic> is required to determine the index directly as an alternative approach. In this study, the cloud model is adopted to obtain quantitative results from the qualitative evaluation of the interconnection degree of structural planes. Then the cloud model is further used to obtain quantitative results of rock mass integrity by combining the interconnection degree and the mean spacing of structural planes. Based on quantitative results of the interconnection degree and rock mass integrity and the quantitative correspondence between the volume joint number <ce:italic>J<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic> and <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic>, a comprehensive rating of <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic> for the CHN-BQ method is proposed by referring to the RMR, in which the geometric and physico-mechanical properties of rock mass integrity account for 55 and 45 <ce:italic>points</ce:italic>, respectively. The comprehensive rating is validated by quantitative results of the interconnection degree and rock mass integrity, as well as the effective samples generated by Monte Carlo simulation methods. The results of the comprehensive rating agree well with quantitative results, with a maximum relative error of 11.3%. The <ce:italic>K<ce:inf loc=\\\"post\\\">vt</ce:inf></ce:italic> assessed by the 30% quantitative approach and 70% qualitative approach is highly consistent with <ce:italic>K<ce:inf loc=\\\"post\\\">vc</ce:inf></ce:italic> determined by the comprehensive rating, with an average relative error of 13%. The results demonstrate that the comprehensive rating of <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic> reasonably combines quantitative and qualitative approaches. To address the fuzzy uncertainty of stepped ratings at rating boundaries, the fuzzy comprehensive rating of <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic> is proposed based on the Mamdani fuzzy inference. Finally, the comprehensive rating of <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic> and its fuzzy version are applied to 95 excavated surfaces which are conducted in detailed geological investigations in the Mingtangshan tunnel. The <ce:italic>K<ce:inf loc=\\\"post\\\">vc</ce:inf></ce:italic> and <ce:italic>FK<ce:inf loc=\\\"post\\\">vc</ce:inf></ce:italic> obtained by comprehensive rating and fuzzy comprehensive rating of <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic> accurately approximate the measured <ce:italic>K<ce:inf loc=\\\"post\\\">vm</ce:inf></ce:italic> by the acoustic wave test, with average relative errors of 9.80% and 7.01%. The rock mass basic quality index BQ and the modified index [BQ] obtained by the comprehensive rating and the fuzzy version almost coincide with those obtained by field tests, with average relative errors of less than 4%. To sum up, the comprehensive rating of <ce:italic>K<ce:inf loc=\\\"post\\\">v</ce:inf></ce:italic>, especially after the fuzzy inference, can conveniently classify the rock mass and guide the construction.\",\"PeriodicalId\":49414,\"journal\":{\"name\":\"Tunnelling and Underground Space Technology\",\"volume\":\"2 1\",\"pages\":\"\"},\"PeriodicalIF\":6.7000,\"publicationDate\":\"2024-12-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Tunnelling and Underground Space Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1016/j.tust.2024.106305\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tunnelling and Underground Space Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.tust.2024.106305","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on comprehensive rating of integrity index Kv for CHN-BQ method based on cloud model
The basic quality (CHN-BQ) method is a national standard for rock mass classification in China. The integrity index Kv in the CHN-BQ method can be determined by the acoustic wave test and quantitative or qualitative approaches, which are flexible and need to be controlled in the determination. This is not sufficiently concise compared with other widely used classifications. Inspired by the RMR (Rock mass rating) classification, a comprehensive rating of Kv is required to determine the index directly as an alternative approach. In this study, the cloud model is adopted to obtain quantitative results from the qualitative evaluation of the interconnection degree of structural planes. Then the cloud model is further used to obtain quantitative results of rock mass integrity by combining the interconnection degree and the mean spacing of structural planes. Based on quantitative results of the interconnection degree and rock mass integrity and the quantitative correspondence between the volume joint number Jv and Kv, a comprehensive rating of Kv for the CHN-BQ method is proposed by referring to the RMR, in which the geometric and physico-mechanical properties of rock mass integrity account for 55 and 45 points, respectively. The comprehensive rating is validated by quantitative results of the interconnection degree and rock mass integrity, as well as the effective samples generated by Monte Carlo simulation methods. The results of the comprehensive rating agree well with quantitative results, with a maximum relative error of 11.3%. The Kvt assessed by the 30% quantitative approach and 70% qualitative approach is highly consistent with Kvc determined by the comprehensive rating, with an average relative error of 13%. The results demonstrate that the comprehensive rating of Kv reasonably combines quantitative and qualitative approaches. To address the fuzzy uncertainty of stepped ratings at rating boundaries, the fuzzy comprehensive rating of Kv is proposed based on the Mamdani fuzzy inference. Finally, the comprehensive rating of Kv and its fuzzy version are applied to 95 excavated surfaces which are conducted in detailed geological investigations in the Mingtangshan tunnel. The Kvc and FKvc obtained by comprehensive rating and fuzzy comprehensive rating of Kv accurately approximate the measured Kvm by the acoustic wave test, with average relative errors of 9.80% and 7.01%. The rock mass basic quality index BQ and the modified index [BQ] obtained by the comprehensive rating and the fuzzy version almost coincide with those obtained by field tests, with average relative errors of less than 4%. To sum up, the comprehensive rating of Kv, especially after the fuzzy inference, can conveniently classify the rock mass and guide the construction.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Tunnelling and Underground Space Technology
Tunnelling and Underground Space Technology 工程技术-工程:土木
CiteScore
11.90
自引率
18.80%
发文量
454
审稿时长
10.8 months
期刊介绍: Tunnelling and Underground Space Technology is an international journal which publishes authoritative articles encompassing the development of innovative uses of underground space and the results of high quality research into improved, more cost-effective techniques for the planning, geo-investigation, design, construction, operation and maintenance of underground and earth-sheltered structures. The journal provides an effective vehicle for the improved worldwide exchange of information on developments in underground technology - and the experience gained from its use - and is strongly committed to publishing papers on the interdisciplinary aspects of creating, planning, and regulating underground space.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信