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Mine spoil stability; U. S. Eastern Coal Province


, : Mine spoil stability; U. S. Eastern Coal Province. Memorias del Congreso Panamericano de Mecanica de Suelos e Ingenieria de Fundaciones = Proceedings of the Panamerican Conference on Soil Mechanics and Foundation Engineering 7(2): 739-749

Over the past three years, the U.S. Bureau of Mines has conducted a comprehensive study of spoil stability problems associated with surface mining in the Eastern Coal Province. The study was directed toward mining and reclamation techniques conforming to the Surface Mining Control and Reclamation Act (SMCRA) of 1977. The main factors found to initiate spoil instability were groundwater and spoil strength. The strength of mine spoil is dependent on the overburden material type. High groundwater conditions were responsible for the majority of the slope stability problems at the sites studied.--Modified journal abstract.

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