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List of products by author: Y. Zhang
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An Explicit Numerical Manifold Method and Its Application on Modelling Tunnel Failure Process
Abstract: The failure of tunnel can affect personal safety and even result in great economic loss. Investigating the failure process of tunnel is one of the key issues of rock mechanics. In this study, the failure process of a deep buried rock tunnel is numerically investigated by the numerical manifold method. An explicit numerical manifold method (ENMM) based on the Newmark time integration method is...
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Analysis on Surrounding Rock Deformation of Double-arch Tunnel in Urban Underground Road
Abstract: It is imperative to develop and utilize the underground space with the growing contradiction between urban development and the lack of land resources. The International Academic Conference on Underground Space held in Tokyo in 1991 passed the Declaration of Tokyo, and pointed that the 21st century was of exploiting the underground space by human beings. It can reduce the occupation of land...
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Evaluation of Tunnel Lining Structures Built in Expansive Rocks Considering Ground Water Effect
Abstract: The construction of tunnels excavated in expansive and water-rich rocks involves significant concerns for the safety of lining structures. This paper focuses on an ongoing tunnel excavated in silty mudstone within water-rich strata. Laboratory mechanical test and mineral composition analysis are conducted to investigate the expansive characteristics of rocks. It is analysed that the rocks...
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Experimental study and numerical simulation of Paris plastic clay
Abstract: This paper presents the experimental study and numerical simulation of Paris plastic clay in a case study of Grand Paris Express project. Paris plastic clay is a highly plastic clay from the Sparnacian age (Lower Eocene) and forms the first tertiary deposits of Paris sedimentary basin, it has a very low permeability, is normally consolidated or overconsolidated, and is swollen in outcrops. To...
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Intelligent Longitudinal Ventilation Control of Long Road Tunnels
Abstract: Jet fans are installed in tunnels to ensure air condition by producing airflow forward in longitudinal ventilation. Longitudinal ventilation promises a qualified environment by producing appropriate air volume according to the traffic condition in tunnel. However, previous longitudinal ventilation system are mostly manual controlled and always takes a long period to react when adjusting its air...
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Research on Cracking Behavior of Tunnel in Carbonaceous Slate Rock Mass during Construction Period
Abstract: A case study of the cracking behavior in a highway tunnel structure during construction period is researched in this article, including fgure out the causes and evolution of cracking. The large deformation of rock mass is the major infuence of the damaging behavior, which is based on the feld investigation. The results highlight the regions of cracking on tunnel bottom structure, emphasize the...
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Technical risk management of Line 16 Lot 1 in the Grand Paris Express project
Abstract: This article presents the technical risk management of the Line 16 Lot 1 in the Grand Paris Express project, one of the largest metro projects underway in the world. This lot includes the construction of 5 metro stations, 20 annex structures, 20 km of tunnels and subway equipment, it has an estimated cost of about 1.84 billion euros. The project is being undertaken to a tight construction...
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Three -dimensional modelling of tunnelling in closed mode
Abstract: In an urbanised context, the prediction of movements induced by the excavation of shallow tunnels is a major challenge for both designer (conceptual design) and contractor (detailed design). In the case of mechanised tunnelling with a closed mode tunnel boring machine, the significant number of machine control parameters makes predictive three-dimensional modelling complex. Simplifications are...
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