China Safety Science Journal ›› 2022, Vol. 32 ›› Issue (4): 185-191.doi: 10.16265/j.cnki.issn1003-3033.2022.04.027

• Emergency technology and management • Previous Articles     Next Articles

Location and routing of dangerous goods' storage and transportation under continuous time-varying risks

KUANG Yujie1,2(), ZHAO Jiahong1,**()   

  1. 1 School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou Guangdong 510006, China
    2 School of Civil Engineering & Transportation, South China University of Technology, Guangzhou Guangdong 510641, China
  • Received:2021-12-01 Revised:2022-03-09 Online:2022-04-28 Published:2022-10-28
  • Contact: ZHAO Jiahong

Abstract:

In order to improve safety of dangerous goods' storage and transportation, considering the location and routing problems under continuous time-varying risks, warehouse location, transportation routes and flow allocation were optimized simultaneously. Firstly, a nonlinear assessment model for continuous time-varying risks was formulated considering continuous influence of emergency rescues. Then, with minimization of total risks and cost as optimized goals, a multi-objective nonlinear 0-1 mixed integer programming model was developed based on locally connected urban network. Finally, TOPSIS-based Dijkstra phased solution algorithm was designed according to the model's complexity, and several examples were used to verify the effectiveness of the model and algorithm. The results show that compared with current management schemes, the proposed method, which considers continuous time-varying risks, can reduce 48.79% of risks, and therefore provides a better plan for dangerous goods' storage and transportation.

Key words: continuous time-varying risk, dangerous goods' storage and transportation, location and routing, emergency rescue, technique for order preference by similarity to an ideal solution (TOPSIS)