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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.... Key words: karst; catastrophe theory; safety thickness; tunnel floor; stability; water 1 Introduction As a country with a vast territory and varied topography, the area of the hill and mountainous......
New methods of safety evaluation for rock/soil mass surrounding tunnel under earthquakeCHENG Xuan-sheng(程选生)1, 2, 3, DOWDING Charles H2, TIAN Rui-rui(田瑞瑞)1(1. School of Civil Engineering, Lanzhou... with the seismic safety evaluation for the rock mass or soil mass surrounding a tunnel, and the limitation of evaluating seismic stability is considered using the pseudo-static strength reduction......
important for tunnel safety. The characteristics of tunnel fire were analyzed. The smoke development in different situations of an engineering example was simulated using commercial CFD software... may provide the theoretical background for evacuation design in tunnel fire. The effective measures of fire rescue and crowd evacuation were also described. Key words: tunnel safety; tunnel fire......
: karst; functional catastrophe theory; Hoek-Brown criterion; safety thickness; tunnel floor; upper bound 1 Introduction The stability analysis of tunnel floor is an important topic, and has been... important effects on the tunnel waterproof and load-bearing. The rock system has a certain safety thickness in tunnel engineering. Fig. 1 Geometric boundary of tunnel with underlying cave 3.1 Upper bound......
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at the beginning of the pipe seat, and adopting the short round length and small excavation height. With the increase of tunnel burial depth, the safety factor of tunnel face stability first decreases... deflection into Eq. (1), the foundation counter stress can be obtained. 2.3 Safety factor of tunnel face stability Assuming that a potential sliding surface is a straight plane, as shown in Figure 1(b......
J. Cent. South Univ. (2021) 28: 595-603 DOI: https://doi.org/10.1007/s11771-021-4624-y Comprehensive safety factor of roof in goaf underdeep high stress JIANG Li-chun(姜立春)1, 2, JIAO Hua-zhe(焦华喆)3, WANG Yu-dan(王玉丹)2, WANG Ge-ge(王格格)2 1. School of Civil Engineering and Transportation, South China University of Technology,Guangzhou 510640, China; 2. Institute of Safety Science and Engineering......
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-zhen(刘智振)1 1. School of Resources and Safety Engineering, Central South University, Changsha 410083, China; 2. Quang Ninh University of Industry, Quang Ninh 208650, Vietnam Central South University......
J. Cent. South Univ. (2018) 25: 2040-2048 DOI: https://doi.org/10.1007/s11771-018-3893-6 Study of road tunnel threshold zone lighting reduction coefficient DU Feng(杜峰)1, 2, WENG Ji(翁季)1, HU Ying...: The luminance in the road tunnel threshold zone attracts broad attention due to its enormous energy consumption and direct influence on tunnel transportation security. Current lighting design methods......
pressure changes on the train surface and the tunnel wall, which worsens the train operation safety and passenger comfort [1-3]. During the process of train entering a tunnel, the air initially inside...J. Cent. South Univ. (2017) 24: 1465-1475 DOI: 10.1007/s11771-017-3550-5 Effect of ambient wind on pressure wave generated by high-speed train entering a tunnel ZHOU Xi-sai(周细赛)1, 2, LIU Tang-hong(刘......