The rock-breaking efficiency of tunnel boring machines (TBMs) in deep and long tunnels is often constrained by geological complexity and the uncertainty of experience-based control, making it difficult to achieve dynamic optimization that balances efficiency and safety. To address this challenge, this study proposes a multi-objective dynamic optimization framework driven by historical tunneling data, incorporating energy efficiency, advance rate, and geological safety. The framework reconstructs tunneling data based on spatial geological similarity and develops integrates tree-structured Parzen estimator (TPE) and light gradient boosting machine (LightGBM) to develop a lightweight rock-breaking response prediction model. Specific energy and advance rate are defined as optimization objectives, while safety thresholds under varying surrounding rock conditions are set as constraints. Unified non-dominated sorting genetic algorithm III (U-NSGA-III) is used to optimize tunneling control parameters. The results show that the proposed framework achieves high prediction accuracy (R2 > 0.95), with strong robustness, generalization ability, and sensitivity to performance variation in unexcavated zones. The model also supports small-sample cross-project training and dynamic updates, demonstrating practical applicability for early-stage deployment in new tunneling projects. Considering the differing priorities between efficiency and safety across rock grades, optimization results reveal that the proposed method improves advance rates by 19.25% and 17.98% in geo-grades II and III, respectively, and reduces specific energy by 5.39% and 7.43% in geo-grades IV and V. This study provides an efficient, and generalizable data-driven solution for the dynamic control of TBM rock-breaking efficiency, enhancing the geological adaptability in TBM tunneling operations.
{"title":"Data-driven dynamic optimization of TBM rock-breaking efficiency: A robust and generalizable framework with geological safety constraints","authors":"Yadong Xue, Wei Luo, Wei Wang, Jinwen Yang, Shouzeng Jiao, Jie Tang","doi":"10.1016/j.tust.2026.107508","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107508","url":null,"abstract":"The rock-breaking efficiency of tunnel boring machines (TBMs) in deep and long tunnels is often constrained by geological complexity and the uncertainty of experience-based control, making it difficult to achieve dynamic optimization that balances efficiency and safety. To address this challenge, this study proposes a multi-objective dynamic optimization framework driven by historical tunneling data, incorporating energy efficiency, advance rate, and geological safety. The framework reconstructs tunneling data based on spatial geological similarity and develops integrates tree-structured Parzen estimator (TPE) and light gradient boosting machine (LightGBM) to develop a lightweight rock-breaking response prediction model. Specific energy and advance rate are defined as optimization objectives, while safety thresholds under varying surrounding rock conditions are set as constraints. Unified non-dominated sorting genetic algorithm III (U-NSGA-III) is used to optimize tunneling control parameters. The results show that the proposed framework achieves high prediction accuracy (R<ce:sup loc=\"post\">2</ce:sup> > 0.95), with strong robustness, generalization ability, and sensitivity to performance variation in unexcavated zones. The model also supports small-sample cross-project training and dynamic updates, demonstrating practical applicability for early-stage deployment in new tunneling projects. Considering the differing priorities between efficiency and safety across rock grades, optimization results reveal that the proposed method improves advance rates by 19.25% and 17.98% in geo-grades II and III, respectively, and reduces specific energy by 5.39% and 7.43% in geo-grades IV and V. This study provides an efficient, and generalizable data-driven solution for the dynamic control of TBM rock-breaking efficiency, enhancing the geological adaptability in TBM tunneling operations.","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"24 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146209385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Calculation of safe roof thickness for irregular goaf underlying a subgrade based on the backward elimination method","authors":"Shengang Li, Tianran Zhang, Chen Jiang, Yue Wang, Zekai Zhang, Shuangshuang Liu","doi":"10.1016/j.tust.2026.107511","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107511","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"43 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-11DOI: 10.1016/j.tust.2026.107518
Olawale Ayinde, Fei Wang, Qunfang Hu, Delu Che, Hongyan Ji, Guanfeng An
{"title":"Time-dependent mechanical response of buried water pipelines to cold waves under coupled multiphysics loading","authors":"Olawale Ayinde, Fei Wang, Qunfang Hu, Delu Che, Hongyan Ji, Guanfeng An","doi":"10.1016/j.tust.2026.107518","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107518","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"98 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Thixotropic properties and rheological optimization of supersulfated cement-based grouting materials for the backfill layer in submarine tunnel behind TBM linings","authors":"Changzhi Shao, Qingsong Zhang, Haotian Tang, Changxin Huang, Duan Liang","doi":"10.1016/j.tust.2026.107537","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107537","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"11 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-11DOI: 10.1016/j.tust.2026.107514
Yihui Li, Dongdong Pan, Wenyong Mou, Zhenhao Xu
{"title":"Spatiotemporal prediction and mapping of fractures from successive tunnel faces: an integrated SMF and ST-LSTM framework","authors":"Yihui Li, Dongdong Pan, Wenyong Mou, Zhenhao Xu","doi":"10.1016/j.tust.2026.107514","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107514","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"9 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-11DOI: 10.1016/j.tust.2026.107502
Xiaohua Xu, Yuanhai Li, Weiguo He, Shuo Yang, Chengbing Wang, Sen Wang
{"title":"Intelligent and accurate recognition method of lining cracks under complex seam interference and engineering application","authors":"Xiaohua Xu, Yuanhai Li, Weiguo He, Shuo Yang, Chengbing Wang, Sen Wang","doi":"10.1016/j.tust.2026.107502","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107502","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"32 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-11DOI: 10.1016/j.tust.2026.107513
Guopeng Lyu, Nan Jiang, Chuanbo Zhou, Feng Yang, Yingkang Yao
{"title":"Surface explosion induced damage effects and optimization of blast resistance performance of buried pipelines: a case study of concrete pipelines with bell-and-spigot joints","authors":"Guopeng Lyu, Nan Jiang, Chuanbo Zhou, Feng Yang, Yingkang Yao","doi":"10.1016/j.tust.2026.107513","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107513","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"11 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.tust.2026.107522
Tianjun Zhang, Guifeng Zhao, Yuhong Ma, Haoming Huang, You Dong, Sihua Kong, Zhenyu Yang, Yuanhai Li
{"title":"Experimental and numerical research on the tensile performance of a novel three-layer ring spring flexible joint for shield tunnels","authors":"Tianjun Zhang, Guifeng Zhao, Yuhong Ma, Haoming Huang, You Dong, Sihua Kong, Zhenyu Yang, Yuanhai Li","doi":"10.1016/j.tust.2026.107522","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107522","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"76 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Numerical simulation and experimental study: dynamic ventilation patterns and air quality analysis in moving subway trains","authors":"Xinge Chen, Jiangpeng Li, Huagan Yang, Yan Wu, Haiying Wang, Jianbin Zang","doi":"10.1016/j.tust.2026.107532","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107532","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"316 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.tust.2026.107516
Jiasuo Qi, Xu Zhao, Jingqi Huang, M. Hesham El Naggar, Xiuli Du, Mi Zhao, Xianghui Zhao
{"title":"Experimental apparatus and mechanical properties of shield tunnel segment joint under cyclic bending moment","authors":"Jiasuo Qi, Xu Zhao, Jingqi Huang, M. Hesham El Naggar, Xiuli Du, Mi Zhao, Xianghui Zhao","doi":"10.1016/j.tust.2026.107516","DOIUrl":"https://doi.org/10.1016/j.tust.2026.107516","url":null,"abstract":"","PeriodicalId":49414,"journal":{"name":"Tunnelling and Underground Space Technology","volume":"2 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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