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Development of Void Diffusion Models to Predict Subsidence due to Underground Coal Mining

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Author Hao Q and Chugh Y P
ID P199207032

Description

A generalized void diffusion model for subsidence prediction has been developed based on theoretical concepts and physical principles. The general form of the model is a three-dimensional differential equation. With a few assumptions on the characteristics of overburden strata overlying typical room-and-pillar mining or longwall mining systems, specific solutions for the differential equation were obtained. A brief description of these solutions and their applications in the United States and China are presented in this paper.