Safety risk assessment of blasting in open-pit mine based on SNA

doi:10.16265/j.cnki.issn1003-3033.2022.10.2045

Abstract

Abstract:

In order to reduce casualties and accident losses caused by blasting safety accidents in open-pit mines, SNA was used to construct the relationship network model of blasting safety risk factors in open-pit mines (A model network) and the relationship network model between safety risk factors and safety accidents (B model network). The relationship between risk factors and blasting accidents and risk factors was studied, and the risk assessment model of open-pit blasting safety based on SNA was proposed. It is determined that the core risk factors affecting the blasting safety of open-pit mines were inadequate guidance and inspection of blasting technology, weak safety awareness and illegal operation. And the key relationship of key control is from bad weather to illegal operation. After risk control, the overall network density and intermediate center potential of the network decreased by 75% and 100%, respectively. Researches has shown that risk can be effectively controlled through targeted intervention of core risk factors and cutting off key relationships.

Key words: open-pit mine, blasting safety accident, social network analysis (SNA), safety risk assessment, relationship network model

KE Lihua, CHEN Kuixiang, HU Nanyan, TAN Ming, ZHANG Guangquan, MENG Huanhuan. Safety risk assessment of blasting in open-pit mine based on SNA[J]. China Safety Science Journal, 2022, 32(10): 48-56.

Figures/Tables 11

Tab.1

Tab.2

Basic data of model A network for blasting safety risk assessment in open-pit mine

$P i$	P₁	P₂	P₃	P₄	P₅	P₆	P₇	P₈	P₉	P₁₀	P₁₁	P₁₂	P₁₃	P₁₄	P₁₅	P₁₆
P₁	0	0	1	1	0	0	1	1	1	1	1	0	0	1	1	1
P₂	1	0	1	1	1	1	1	0	1	0	0	0	0	0	0	0
P₃	0	0	0	0	0	0	0	0	0	1	1	0	0	1	1	1
P₄	1	0	1	0	0	1	1	0	1	1	1	0	0	0	0	0
$P i$	P₁	P₂	P₃	P₄	P₅	P₆	P₇	P₈	P₉	P₁₀	P₁₁	P₁₂	P₁₃	P₁₄	P₁₅	P₁₆
P₅	0	0	0	0	0	0	0	1	0	0	0	0	0	0	1	0
P₆	1	0	1	1	1	0	1	1	1	1	1	0	0	0	1	0
P₇	0	0	0	0	0	0	0	1	0	0	0	0	0	1	1	0
P₈	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	0
P₉	0	0	0	0	0	0	1	1	0	1	1	0	0	1	1	1
P₁₀	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1
P₁₁	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1
P₁₂	0	0	0	0	1	0	0	0	0	0	0	0	0	1	1	1
P₁₃	0	0	0	0	0	0	0	0	1	0	0	0	0	1	1	1
P₁₄	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
P₁₅	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
P₁₆	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0

Tab.2

Tab.3

Basic data of model B network for blasting safety risk assessment in open-pit mine

$P i → V t$	V₁	V₂	V₃	V₄	V₅
P₁	0	1	0	1	1
P₂	1	1	1	1	1
P₃	1	0	0	1	1
P₄	1	1	0	1	1
P₅	0	1	1	1	0
P₆	1	1	1	1	1
P₇	1	1	1	1	0
P₈	0	1	0	1	0
P₉	1	1	1	1	1
P₁₀	1	0	0	0	1
P₁₁	0	0	0	0	1
P₁₂	1	1	1	1	0
P₁₃	0	0	0	1	1
P₁₄	1	0	0	1	1
P₁₅	0	0	0	1	1
P₁₆	0	0	0	1	1

Tab.3

Fig.1

Fig.2

Tab.4

Tab.5

Subset Density matrix of blasting safety risk factors in open-pit mine

$Z s$	Z₁	Z₂	Z₃	Z₅	Z₆	Z₇	Z₈
Z₁	0.500	0.500	0.833	1.000	1.000	0.750	0.500
Z₂	1.000	0.500	0.833	0.500	0.500	0.000	0.000
Z₃	0.000	0.000	0.000	0.500	0.667	0.833	0.667
Z₄	0.000	0.000	0.333	0.000	0.000	1.000	1.000
Z₅	0.000	0.000	0.000	0.500	0.000	1.000	0.000
Z₆	0.000	0.000	0.000	0.000	0.000	1.000	1.000
Z₇	0.000	0.000	0.000	0.000	0.000	0.000	0.000
Z₈	0.000	0.000	0.000	0.000	0.000	0.500	0.000

Tab.5

Tab.6

Subset image matrix of blasting safety risk factors in open-pit mine

$Z s$	Z₁	Z₂	Z₃	Z₄	Z₅	Z₆	Z₇	Z₈	$β 1$	$β 3$
Z₁	1.000	1.000	1.000	0.000	1.000	1.000	1.000	1.000	6	1
Z₂	1.000	1.000	1.000	0.000	1.000	1.000	0.000	0.000	4	1
Z₃	0.000	0.000	0.000	0.000	1.000	1.000	1.000	1.000	4	0
Z₄	0.000	0.000	1.000	0.000	0.000	0.000	1.000	1.000	3	0
Z₅	0.000	0.000	0.000	0.000	1.000	0.000	1.000	0.000	1	1
Z₆	0.000	0.000	0.000	0.000	0.000	0.000	1.000	1.000	2	0
Z₇	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0	0
Z₈	0.000	0.000	0.000	0.000	0.000	0.000	1.000	0.000	1	0
$β 2$	1	1	3	0	3	3	6	4	—	—

Tab.6

Tab.7

Tab.8

Tab.9

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风险维度	风险因素	文献序号	引发的事故类型
安全管理	爆破技术指导和检查不到位P₁	[1,3]	V₂、V₄、V₅
	无奖罚制度P₂	[2]	V₁、V₂、V₃、V₄、V₅
	爆破器材管理不良P₃	[1,11]	V₁、V₄、V₅
	安全教育培训未落实P₄	[1,3]	V₁、V₂、V₄、V₅
人员	爆破设计不合理P₅	[2-3,11]	V₂、V₃、V₄
	安全意识薄弱P₆	[2-3,11]	V₁、V₂、V₃、V₄、V₅
	爆破前的核实与验收不到位P₇	[1]	V₁、V₂、V₃、V₄
	爆孔填塞不合格P₈	[1⇓-3,11]	V₂、V₄
	违规操作P₉	[1-2]	V₁、V₂、V₃、V₄、V₅
环境	危险品储存条件差P₁₀	[1]	V₁、V₅
	危险品运输不当P₁₁	[11]	V₅
	工作面地质条件差P₁₂	[2-3]	V₁、V₂、V₃、V₄
	天气恶劣P₁₃	[2,11]	V₄、V₅
爆破器材	炸药质量问题P₁₄	[1,3,11]	V₁、V₄、V₅
	起爆网络故障P₁₅	[1,11]	V₄、V₅
	起爆器材质量问题P₁₆	[1-2,11]	V₄、V₅

P	相对度数中心度	中间中心度	接近中心度		P	相对度数中心度	中间中心度	接近中心度
P	相对度数中心度	中间中心度	入度远离度	出度远离度	P	相对度数中心度	中间中心度	入度远离度	出度远离度
P₁	0.667	1.168	195	63	P₉	0.467	3.073	165	135
P₂	0.467	0.000	240	51	P₁₀	0.200	0.406	137	195
P₃	0.333	0.954	180	165	P₁₁	0.200	0.406	137	195
P₄	0.467	1.143	195	65	P₁₂	0.267	0.000	240	166
P₅	0.133	0.651	168	196	P₁₃	0.267	0.000	240	124
P₆	0.667	1.505	196	62	P₁₄	0.000	0.000	49	240
P₇	0.200	0.628	151	195	P₁₅	0.000	0.000	32	240
P₈	0.133	0.544	109	210	P₁₆	0.067	0.000	93	225

P	相对度数中心度	中间中心度	相对接近中心度	P	相对度数中心度	中间中心度	相对接近中心度
P₁	0.600	0.015	0.897	P₉	1.000	0.049	1.000
P₂	1.000	0.049	1.000	P₁₀	0.400	0.004	0.778
P₃	0.600	0.013	0.897	P₁₁	0.200	0.000	0.686
P₄	0.800	0.027	0.946	P₁₂	0.800	0.021	0.897
P₅	0.600	0.010	0.814	P₁₃	0.400	0.005	0.854
P	相对度数中心度	中间中心度	相对接近中心度	P	相对度数中心度	中间中心度	相对接近中心度
P₆	1.000	0.049	1.000	P₁₄	0.600	0.013	0.897
P₇	0.800	0.021	0.897	P₁₅	0.400	0.005	0.854
P₈	0.400	0.003	0.778	P₁₆	0.400	0.005	0.854

排名	1	2	3	4	5	6	7
关键关系	P₁₃→P₉	P₄→P₆	P₅→P₈	P₁→P₄	P₆→P₅	P₉→P₈	P₂→P₉
线中间中心度	5.000	4.393	3.200	3.000	3.000	2.450	2.350

风险控制对象	控制措施
P₁	1) 制定安全检查制度,严格遵守《爆破安全规程》《爆破安全管理方案》系列规章制度
P₂	1) 建立完善的奖惩制度,做到违章必惩,奖罚分明,以精神鼓励和物质奖励相结合,教育和惩罚相结合为原则
风险控制对象	控制措施
P₃	1) 制定严格的爆破器材管理制度,明确相关责任人 2) 定期检查爆破器材的存储条件、外观和质量等
P₄	1) 加强安全管理,定期检查安全培训落实情况 2) 树立“安全第一,预防为主”的企业文化,有利于教育培训的常态化发展
P₆	1) 落实班前安全教育,提高作业人员安全意识 2) 安全责任划分,将责任落实到每一位作业人员身上
P₇	1) 定期技术培训作业人员,提高人员作业水平 2) 加强对爆破前的核实与验收
P₉	1) 定期安全技术培训,规范作业操作步骤 2) 制定奖惩措施,严惩违规操作行为
P₅→P₈	1) 爆破设计时遵守相关规定,并充分考虑爆破区域的地质条件 2) 加强对炮孔填塞的质量检查