{"title":"Study on Zonal Support Mechanism and the Surrounding Rock Control Technology of Rock Roadway Excavated by TBM in Coal Mine","authors":"Zhao Chen, Sheng Zhang, Yiqiang Lu, Zhanbiao Yang, Longfei Wang, Fei He","doi":"10.1002/ese3.2059","DOIUrl":null,"url":null,"abstract":"<p>Tunnel boring machine (TBM) has been increasingly used for excavating rock roadways in coal mines. However, the slower speed of support installation, compared to the cutterhead's fast rock-breaking capability, limits the overall excavation speed of rock roadways. This study examines the construction of a gas drainage roadway in Shoushan No.1 coal mine using a double-shield TBM. A mechanical model for TBM excavation was developed, considering the spatial effects of the excavation face. The study identified a zonal support mechanism for the surrounding rock in TBM excavation roadways, it also analyzed the effects of support reaction forces and virtual support forces on the surrounding rock of different zones. A zonal control technology for surrounding rock was proposed and successfully implemented in the field. The results indicate that the strain evolution of the surrounding rock behind the TBM excavation face displays distinct zonal features. Based on this, the study recommends timely support for critical areas of the roadway roof in rapidly deforming zones through localized active primary anchor bolting. In slower deforming zones, secondary active anchor bolting is recommended for the remaining parts of the roadway roof and the side supports. In stable zones, cables anchor bolting support are implemented. A phased control technology system for the zonal management of surrounding rock in TBM excavation roadway was developed, and optimal parameters were determined using numerical simulations. The phased and zonal control technology was successfully applied at Shoushan No. 1 coal mine, achieving a maximum excavation speed of 623 m per month. This study provides valuable insights into the application of rapid excavation technology by TBM under similar conditions.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 3","pages":"1239-1254"},"PeriodicalIF":3.5000,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2059","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Science & Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ese3.2059","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Tunnel boring machine (TBM) has been increasingly used for excavating rock roadways in coal mines. However, the slower speed of support installation, compared to the cutterhead's fast rock-breaking capability, limits the overall excavation speed of rock roadways. This study examines the construction of a gas drainage roadway in Shoushan No.1 coal mine using a double-shield TBM. A mechanical model for TBM excavation was developed, considering the spatial effects of the excavation face. The study identified a zonal support mechanism for the surrounding rock in TBM excavation roadways, it also analyzed the effects of support reaction forces and virtual support forces on the surrounding rock of different zones. A zonal control technology for surrounding rock was proposed and successfully implemented in the field. The results indicate that the strain evolution of the surrounding rock behind the TBM excavation face displays distinct zonal features. Based on this, the study recommends timely support for critical areas of the roadway roof in rapidly deforming zones through localized active primary anchor bolting. In slower deforming zones, secondary active anchor bolting is recommended for the remaining parts of the roadway roof and the side supports. In stable zones, cables anchor bolting support are implemented. A phased control technology system for the zonal management of surrounding rock in TBM excavation roadway was developed, and optimal parameters were determined using numerical simulations. The phased and zonal control technology was successfully applied at Shoushan No. 1 coal mine, achieving a maximum excavation speed of 623 m per month. This study provides valuable insights into the application of rapid excavation technology by TBM under similar conditions.
期刊介绍：
Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
