Multi objective site selection model for emergency material storage in chemical industry park based on risk

doi:10.16265/j.cnki.issn1003-3033.2025.10.1348

Abstract

Abstract:

In order to improve the efficiency of emergency rescue and reduce accident losses in chemical industrial parks, this study comprehensively considered the risk of chemical parks and the overall risk of emergency supplies, divides the cost of emergency rescue into the cost of construction of emergency supplies reserve, storage cost and transportation cost, and established a model for selecting the site of emergency material reserve in chemical parks. The model aims to minimize the overall risk, minimize the cost of emergency rescue and optimize the coverage of the reserve to the demand point. Taking a chemical industrial park in Tianjin as an example for validation analysis, the model was solved using the NSGA-II algorithm. When constructing different numbers of emergency material storage within the chemical industrial park, the optimal solutions for the location, cost, risk, and coverage of these storage facilities were obtained. The research results show that the model converges stably within 200 generations. As the amount of emergency material storage increases, investment costs continue to rise, coverage gradually improves, risks are significantly reduced in the early stages, and stabilize in the later stages. The model can generate multiple site selection schemes, effectively addressing the challenge of balancing the “risk-cost-coverage ratio” in the site selection process for emergency material storage within chemical industrial parks. This helps decision-makers make more scientific and reasonable decisions in complex emergency material storage site selection issues based on different preferences.

Key words: risk, chemical industry park, emergency material storage, multi objectives, location models, non-dominated sorting genetic algorithm Ⅱ(NSGA-Ⅱ)

CLC Number:

X937

GUAN Wenling, TIAN Weijia, DONG Chengjie, XIA Yueshuang, LIAO Fei. Multi objective site selection model for emergency material storage in chemical industry park based on risk[J]. China Safety Science Journal, 2025, 35(10): 213-219.

Figures/Tables 10

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企业代号	经度/(°)	纬度/(°)
1	117.411 269	38.844 977
2	117.385 932	38.844 968
︙	︙	︙
25	117.264 427	38.814 869
26	117.240 790	38.804 807

d_ij/km	1	…	26
1	1	…	19.3
︙	︙		︙
26	19.3	…	1

T_ij/min	1	…	26
1	0	…	38.6
︙	︙		︙
26	38.6	…	0

企业序号	事故类型	综合风险	应急物资量/kg
1	池火灾	39.15	26
2	池火灾	339.28	1357.13
3	池火灾	455.32	112.93
4	池火灾	11.11	11.56
5	池火灾	12.27	12
6	池火灾	5.79	14.42
7	池火灾	15.80	20.55
8	蒸气爆炸	2.83	5.66
9	池火灾	10.63	10.4
9	物理爆炸	10.63	10.4
10	池火灾	6.29	7.72
11	物理爆炸	27.69	28.81
12	池火灾	10.66	21
13	池火灾	4.93	3.94
14	池火灾	0.77	1.03
15	物理爆炸	9.19	11.48
16	燃烧爆炸	0.18	0.18
17	池火灾	1.34	4.64
18	池火灾	52.87	53.32
18	物理爆炸	52.87	53.32
19	池火灾	78.72	14.99
20	中毒扩散	105.79	423.16
21	中毒扩散	110.13	440.53
22	中毒扩散	0.99	3.94
23	池火灾	94.83	379.3
24	中毒扩散	413.71	1 654.85
25	中毒扩散	0.89	3.56
26	池火灾	12.99	8.28

储备库数量	成本/元	风险	响应覆盖率/%	交叉响应覆盖率/%
1	6 554 039.05	26 211.99	30.77	0
2	6 653 966.17	10 077.31	42.31	0
3	6 753 961.04	6 308.71	61.54	0
4	6 853 946.3	7 598.2	73.08	19.23
5	6 953 941.06	5 763.94	88.46	11.54
6	7 053 934.91	4 067.92	92.31	19.23
7	7 153 930.83	3 294.59	96.15	26.92
8	7 253 927.07	2 341	100	7.69
9	7 353 924.52	2 028.66	100	15.38
10	7 453 923.21	1 872.38	100	23.08
11	7 553 922.3	1 776.17	100	19.23
12	7 653 921.52	1 762.73	100	53.85
13	7 753 920.85	1 595.75	100	76.92