Date of Award

5-1-2011

Degree Name

Master of Science

Department

Mining Engineering

First Advisor

Spearing, A.J.S.

Abstract

This is a preliminary study on the economic and technical aspects of high density disposal of coal waste in underground coal mines in the United States. This document covers the rheological concepts of coal waste, a conceptual backfill plant design, as well as a discussion on the permeability requirements for the waste. Only one material was chosen and was selected by the industry group assisting in this project. This material was relatively fine with a relatively high porosity. This material was ideal because the fine and poorly graded characteristics resulted in higher pressure gradients. This document does not include complete optimization of the experiments undertaken, nor does it include all possible forms of coal waste (ash, slimes, coarse refuse etc...).

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