China Safety Science Journal ›› 2025, Vol. 35 ›› Issue (11): 198-206.doi: 10.16265/j.cnki.issn1003-3033.2025.11.0323

• Technology and engineering of disaster prevention and mitigation • Previous Articles     Next Articles

Synergistic study on dual-network for risk propagation and emergency response in earthquake disasters under extreme environments

ZHANG Ludan1(), WANG Deyun1,2,**(), ZHU Wenkai1, SUN Ying1, GUO Haixiang1,2   

  1. 1 School of Economics and Management, China University of Geosciences (Wuhan), Wuhan Hubei 430074, China
    2 Laboratory of Natural Disaster Risk Prevention and Emergency Management, China University of Geosciences (Wuhan), Wuhan Hubei 430074, China
  • Received:2025-06-20 Revised:2025-09-11 Online:2025-11-28 Published:2026-05-28
  • Contact: WANG Deyun

Abstract:

To optimize the emergency management system for plateau disasters and to address the scientific demand for improving governance effectiveness under extreme plateau environments, this study developed a dual-network framework—"risk propagation-emergency response"—using the Ms6.8 Shigatse earthquake in Tibet as a case study. Based on complex network theory, it uncovered the cascading dynamics of seismic risks and multi-actor coordination governance patterns. The analysis demonstrates that the cascading disaster network exhibits a core-periphery structure, where critical nodes trigger multi-level chain reactions via infrastructure fragility and cultural sensitivity. Plateau-specific disaster chains are identified, such as "cold survival crisis → mass livestock deaths → pressure of harmless treatment", alongside culturally embedded risks like "language barriers" and "religious site damage", and their impacts further promote the cultural adaptive reconstruction of the traditional emergency management system. The coordination network shows a decentralized, short-path, high-density topology, indicating efficient collaboration despite persistent hierarchical redundancy.

Key words: extreme environments, earthquake disaster, risk propagation, emergency response, collaborative governance, cascading risk

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