Urban natural gas pipeline operational vulnerability under the influence of a social spatial distribution structure: A case study of the safety risk patterns in Kunming, China

• Jiarui XuYunnan University
• Chunhou JiYunnan University
• Lihong YangYunnan University
• Yun LiuYunnan University
• Zhiqiang XieYunnan University
• Xingfeng FuYunnan University
• Fengshan JiangYunnan University
• Mengfan LiaoYunnan University
• Lei Zhao