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J. Cent. South Univ. (2021) 28: 100-111 DOI: https://doi.org/10.1007/s11771-021-4589-x Contour blasting parameters by using a tunnel blast design mode Nguyen Ngoc MINH1, 2, CAO Ping(曹平)1, LIU Zhi..., rock Protodyakonov coefficient, tunnel area and distance between cracks on the tunnel face are more important. In this study, an algorithm linking between Delphi programming language and AutoCAD......
Non-local damage and fracture model of rock and concrete-like materials BI Zhong-wei(毕忠伟)1, 2, ZHANG Ming(张 明)1, JIN Feng(金 峰)1 1. State Key Laboratory of Hydroscience and Hydraulic... of the non-local phenomena appearing in the rock and concrete-like materials, the non-local damage and fracture model of rock and concrete-like materials was established through non-local method of Gaussian......
; Abstract: Based on mesoscopic damage mechanics, numerical code RFPA2D (dynamic edition) was developed to analyze the influence of tunnel reinforcing on failure process of surrounding rock under explosive... explosive load. In this work, based on mesoscopic damage mechanics, numerical code RFPA2D (dynamic edition) was developed to simulate the failure process of surrounding rock of tunnel subjected......
J. Cent. South Univ. (2019) 26: 1780-1793 DOI: https://doi.org/10.1007/s11771-019-4133-4 Face stability analysis for a longitudinally inclined tunnel in anisotropic cohesive soils HUANG Qi(黄琦), ZOU... 2019 Abstract: A stability analysis approach of tunnel face considering a longitudinally inclined tunnel angle and anisotropic purely cohesive soils based on a continuous velocity field (CVF......
the combined method of investigation in-situ and artificial environmental test indoor, the damage mechanism and evolution law of mechanical property of tunnel lining structure suffering sulfate ambient were studied. The results show that the main damage forms of tunnel lining structure effected by occurrence environment, characteristic of structure, waterproof ability and quality of material can be divided......
, and reduce the water damage. Based on the analysis, the radius of tunnel has less impact on the amount of water inflow, and the water inflow just increases by 6.7% when the radius of tunnel increases by 1 m... with water damage, and ensures the safety of construction and operation. 4) The variation in the radius of the tunnel has inconspicuous effect on water inflow, at which the water inflow just grows by 6.7% when......
the damage of rock system occurred. It has the practical application to underground project which has karst cave beneath the floor. 2 Tunnel floor rock system model When tunneling through karst area...J. Cent. South Univ. (2016) 23: 2364-2372 DOI: 10.1007/s11771-016-3295-6 Safety thickness analysis of tunnel floor in karst region based on catastrophe theory YANG Xiao-li(杨小礼), XIAO Hai-bo(肖海波......
in many underground rock engineering, such as traffic tunnels, mining tunnel and hydraulic tunnels. Blasting will bring damage to retaining rock unavoidably during excavation, and the safety of whole... result of one times blasting. For example, there are plentiful recurrent or repetitive blasting operations in tunnel excavation and mining production. To analyze the damage of rock mass for one times......
damage model is presumed by making reference to the limit analysis theory. The analytical solutions of detaching curve, half collapse width on tunnel floor and the critical and maximum values of collapse...J. Cent. South Univ. (2017) 24: 957-966 DOI: 10.1007/s11771-017-3498-5 Collapse analysis of tunnel floor in karst area based on Hoek-Brown rock media YANG Xiao-li(杨小礼), LI Zheng-wei(李正伟), LIU Zheng......
. It is difficult to quantify the relationship between the structure damage state and shield tunnel structure deformation by the model test because of unpredictable effects of different scales between model test and prototype tunnel structure. Here, an in-situ monitoring project was conducted to study the excavation induced shield tunnel structure damage, which could be considered a prototype test......