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A Computer Model for Gravel Pit Headcut Simulation

by Lan-Yin Li Weber, Simons, Li & Associates, United States,
Ruh-Ming Li, Simons, Li & Associates, United States,



Document Type: Proceeding Paper

Part of: Sediment Transport Modeling

Abstract:

Sand and gravel mining activities have led to numerous problems in river management. A review of many complaints on sand and gravel mining indicates that the major concern is structural damage due to headcutting and downstream erosion. To properly control erosion and to minimize its impact on the river and structural stability, it is essential to develop methodologies which allow one to quantitatively determine the potential impact area and scour depth during projected flood events. This paper presents a computer model, 'PIT', developed specifically for simulation of headcutting processes upstream of sand and gravel pits. This model also provides information on sediment backfill within the pit and erosion downstream from the pit. The model was developed based on the sediment continuity principle and observation of the physical processes.

Subject Headings: Computer models | Erosion | Gravels | Sediment | Sandy soils | Computer analysis | Soil classification

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