Experimental assessment of clayey layers for clogging potential in TBM tunnel driving and the influence of compositional factors
文献类型：期刊论文
| 作者 | Wang, Gang2,3; Zhang, Xianwei3; Liu, Xinyu1; Gao, Haodong4; An, Ran4; Yin, Song5 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2023-07-01 |
| 卷号 | 137期号:-页码:- |
| 关键词 | Clogging potential Consistency index Adhesion Clayey soil Tunnelling Tunnel boring machine |
| ISSN号 | 0886-7798 |
| 英文摘要 | Clogging is common for tunnel boring machines, especially in clayey soil, and when it happens, the cutter heads or even the entire tunnelling device can become completely clogged, causing low excavation efficiency and high project costs. Because clogging stems from the adhesion of the excavated geomaterials, a better understanding of soil adhesion is required if clogging is to be avoided. Reported here are piston pull-out tests conducted to investigate the adhesion of natural clayey soils and artificial soils prepared using pure kaolin, montmorillonite, and silica sand, thereby enabling consideration of the effects of compositional factors (e.g., clay fraction, and mineralogy). The results show that with increasing water content, the adhesion stresses of the studied samples increased initially and then decreased. With increasing clay fraction, the adhesion stresses increased linearly because of the larger real contact area of the interface between the soil and a foreign object. With the addition of montmorillonite, the soil adhesion also increased significantly because of its microstructural properties. An updated semi-empirical diagram is proposed that allows the effects of compositional factors on clogging potential to be evaluated qualitatively. The measured maximum adhesion stresses of the studied samples occurred in the region of strong clogging in the semi-empirical diagram, showing the feasibility of using adhesion stress as an index for assessing the clogging of tunnel boring machines. This study provides valuable experimental data on soil adhesion and a better understanding of the adhesion behavior of clayey soils. |
| 学科主题 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001003857700001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35473]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, China 2.University of Chinese Academy of Sciences, Beijing, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China 4.College of Urban Construction, Wuhan University of Science and Technology, Wuhan, China 5.College of Architecture and Civil Engineering, Zhongyuan University of Technology, Zhengzhou, China |
| 推荐引用方式 GB/T 7714 | Wang, Gang,Zhang, Xianwei,Liu, Xinyu,et al. Experimental assessment of clayey layers for clogging potential in TBM tunnel driving and the influence of compositional factors[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2023,137(-):-. |
| APA | Wang, Gang,Zhang, Xianwei,Liu, Xinyu,Gao, Haodong,An, Ran,&Yin, Song.(2023).Experimental assessment of clayey layers for clogging potential in TBM tunnel driving and the influence of compositional factors.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,137(-),-. |
| MLA | Wang, Gang,et al."Experimental assessment of clayey layers for clogging potential in TBM tunnel driving and the influence of compositional factors".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 137.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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