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selection, economic appraisal, project prioritization, and safety effectiveness evaluation. Evaluation is the last step. Nevertheless, it plays a critical role in the whole management process. The evaluation assesses how crashes (number and severity) have changed due to the treatment(s) [1, 2]. The safety effectiveness is typically represented in the form of a crash reduction factor (CRF......
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J. Cent. South Univ. (2018) 25: 1524-1534 DOI: https://doi.org/10.1007/s11771-018-3845-1 Backfill support’s backfill and operation properties and evaluation ZHANG Qiang(张强)1, 2, DU Chang-long(杜长龙)1... intensity and vertical roof gap. Seven separate evaluation indexes are selected to build a backfill and operation properties based system for evaluating the design schemes of the backfill support via......
J. Cent. South Univ. (2020) 27: 1587-1598 DOI: https://doi.org/10.1007/s11771-020-4392-0 Catastrophe theory-based risk evaluation model for water and mud inrush and its application in karst tunnels... University, Changsha 410075, China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: This paper presents a risk evaluation model of water and mud......
系统各部位的屈服情况基本相同,坝体材料按照线弹性分析时,2种模型超载整体安全度均为6.0左右,按照弹塑性分析时,整体安全度均为4.0左右.该拱坝径向贯穿性裂缝对拱坝-地基系统整体安全度无显著影响.关键词:碾压混凝土拱坝;贯穿性裂缝;超载法;整体安全度; 评价Global safety evaluation of RCC arch dam under cracksWANG Shaowei1, 2...; global safety degree; evaluation......
powered excavation; comprehensive evaluation 1 Introduction With the increasing requirements of safety, environmental protection and energy saving and efficiency for excavation in deep rock mass...J. Cent. South Univ. Technol. (2011) 18: 1902-1909 DOI: 10.1007/s11771-011-0921-1 A novel experimental system for performance evaluation of water powered percussive rock drill LI Xi-bing(李夕兵), LI Zhi......
environment, safety supervision and management were used to determine the classical domain and joint domain of the proposed evaluation sample, membership function was constructed based on identity-discrepancy-contrary analysis, and a security risk assessment model was established based on set pair-extension analysis method and rough set theory to calculate the safety risk evaluation index weights......
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J. Cent. South Univ. (2012) 19: 365-373 DOI: 10.1007/s11771-012-1013-6 Dual cycloid gear mechanism for automobile safety pretensioners SHIN Joong-ho, KIM Chang-hyun, YUN Pyeong-hwa, KWON Soon-man... of passenger to airbags by tightening the passenger to the seat through rewinding safety belts at an automobile crash. Thus, researches and developments for specifying safety factors in these issues......
evaluation is adopted to verify the optimal scheme. The pillar group with the lowest roof deformation value is chosen as the optimal plan, which renders a factor of safety of 2.06 for the pillar group... School of Resources and Safety Engineering, Central South University, Changsha 410083, China Received 28 May 2017; accepted 6 November 2017 Abstract: In order to achieve the safe mining in Sanshandao......