Safety evaluation of metro station construction in confined space under 500 kV high-voltage lines

doi:10.16265/j.cnki.issn1003-3033.2025.04.1008

Abstract

Abstract:

In order to effectively identify construction risks and prevent safety accidents, this study investigated the safety evaluation method for metro station construction in confined space under 500 kV high-voltage lines. First, a safety evaluation index system for metro station construction under high-voltage lines was established by integrating AHP and 3MET(Management,Man,Machine,Environment,Technology) method. Then, the weights of indicators were calculated using the IOWA operator, and the cloud model was applied to determine evaluation standard clouds and cloud characteristic values, thereby deriving the comprehensive safety evaluation grade. Finally, the proposed method was validated through a case of the University Town Central Road Station on Chongqing Metro Line 15, with corresponding mitigation measures proposed for high-risk indicators. The results demonstrate that the evaluation model accurately identifies high-risk sources in metro station construction under high-voltage lines, with the safety evaluation grade classified as lower risk, consistent with on-site conditions. Key considerations for safety measures include the electromagnetic field effects of high-voltage lines, risk monitoring and protection, mechanical equipment selection and its safety functions. The application of multi-dimensional layered protective structures could effectively mitigate construction risks under high-voltage environments.

Key words: 500 kV high-voltage lines, confined space, metro station, construction safety evaluation, cloud model, induced ordered weighted average (IOWA) operator, analytic hierarchy process (AHP)

CLC Number:

X948

LI Yanjun, XIA Huahua, YAN Hongshuai, LIU Kewei, SONG Ruitao. Safety evaluation of metro station construction in confined space under 500 kV high-voltage lines[J]. China Safety Science Journal, 2025, 35(4): 204-210.

Figures/Tables 8

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二级指标	专家1	专家2	专家3	专家4	专家5	E_x	E_n	H_e	权重
F₁₁	[0.7,0.8]	[0.7,0.74]	[0.72,0.76]	[0.62,0.7]	[0.7,0.9]	0.734	0.044 1	0.025 2	0.240
F₁₂	[0.6,0.7]	[0.6,0.66]	[0.63,0.69]	[0.64,0.7]	[0.6,0.8]	0.664	0.026 1	0.007 1	0.423
F₁₃	[0.5,0.7]	[0.55,0.61]	[0.5,0.7]	[0.54,0.6]	[0.6,0.8]	0.612	0.044 1	0.024 0	0.124
F₁₄	[0.7,0.8]	[0.75,0.79]	[0.6,0.8]	[0.7,0.8]	[0.8,1.0]	0.774	0.063 2	0.040 5	0.213
F₂₁	[0.6,0.7]	[0.7,0.72]	[0.6,0.66]	[0.6,0.8]	[0.7,0.9]	0.698	0.058 2	0.031 4	0.262
F₂₂	[0.5,0.6]	[0.6,0.62]	[0.5,0.58]	[0.5,0.7]	[0.6,0.7]	0.590	0.045 1	0.003 8	0.452
F₂₃	[0.6,0.7]	[0.6,0.8]	[0.5,0.7]	[0.5,0.6]	[0.6,0.64]	0.624	0.051 1	0.022 7	0.286
F₃₁	[0.8,0.9]	[0.8,1.0]	[0.86,0.9]	[0.7,0.8]	[0.9,1.0]	0.866	0.066 2	0.033 9	0.409
F₃₂	[0.7,0.9]	[0.9,1.0]	[0.78,0.8]	[0.8,0.9]	[0.8,0.9]	0.848	0.053 1	0.034 6	0.419
F₃₃	[0.7,0.9]	[0.9,1.0]	[0.7,0.8]	[0.8,0.9]	[0.8,1.0]	0.850	0.075 2	0.024 4	0.172
F₄₁	[0.6,0.8]	[0.7,0.9]	[0.6,0.7]	[0.7,0.8]	[0.8,1.0]	0.760	0.090 2	0.033 3	0.228
F₄₂	[0.3,0.5]	[0.4,0.6]	[0.3,0.5]	[0.4,0.5]	[0.5,0.6]	0.460	0.065 2	0.001 6	0.289
F₄₃	[0.5,0.7]	[0.4,0.6]	[0.5,0.7]	[0.6,0.7]	[0.7,0.8]	0.620	0.080 2	0.042 6	0.414
F₄₄	[0.3,0.4]	[0.3,0.5]	[0.2,0.4]	[0.3,0.4]	[0.3,0.5]	0.360	0.040 1	0.011 9	0.342
F₅₁	[0.4,0.6]	[0.5,0.7]	[0.4,0.6]	[0.5,0.7]	[0.7,0.9]	0.600	0.100 3	0.070 3	0.424
F₅₂	[0.6,0.8]	[0.6,0.8]	[0.6,0.7]	[0.5,0.7]	[0.8,0.9]	0.700	0.075 2	0.055 6	0.549
F₅₃	[0.7,0.8]	[0.6,0.8]	[0.7,0.74]	[0.7,0.9]	[0.8,1.0]	0.774	0.076 2	0.023 9	0.189

一级指标	E_x	E_n	H_e	权重
F₁	0.698	0.043 0	0.020 6	0.109
F₂	0.628	0.050 5	0.016 4	0.117
F₃	0.856	0.062 8	0.032 6	0.229
F₄	0.686	0.079 4	0.029 8	0.255
F₅	0.785	0.092 0	0.064 9	0.290

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