Influences of Initial Conditions of Submarine Debris Flows on Their Run-Out Scenarios in the Shenhu Area, South China Sea
Publication: Geo-Risk 2023
ABSTRACT
Shenhu area is a potential hydrate exploitation zone. However, hydrate exploitation in this area may induce regional debris flows, which can destroy infrastructure. To quantitatively evaluate the areas vulnerable to disaster and the intensity of a potential disaster, the run-out behavior of debris flows should be systematically investigated. Previous studies have investigated the influences of the ambient fluid and the yield strength of the sliding material on the run-out scenarios of debris flows. This paper investigates the influence of the initial location of debris flow and analyzes the extreme disaster scenarios of concurrent multiple debris flows. Results show that a debris flow may damage an infrastructure only when they lie in the same watershed. In the extreme disaster scenarios of concurrent multiple debris flows, the maximum mass thickness and mass flow velocity are significantly greater than those of a single debris flow. The debris flow with a higher velocity can “absorb” the debris flow with a lower velocity to form a larger sliding body, which may amplify the damage to infrastructure.
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Published In
Geo-Risk 2023
Pages: 357 - 365
History
Published online: Jul 20, 2023
ASCE Technical Topics:
- Coasts, oceans, ports, and waterways engineering
- Debris
- Disaster risk management
- Disasters and hazards
- Education
- Engineering education
- Environmental engineering
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Fluid velocity
- Hydration
- Hydrologic engineering
- Infrastructure
- Laminating
- Materials engineering
- Materials processing
- Ocean engineering
- Pollutants
- Practice and Profession
- Solid wastes
- Solids flow
- Wastes
- Water and water resources
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