Evaluation of Existing Predictive Methods for Mine Subsidence in the U. S.
Proc Workshop Surface Subsidence Due to Underground Mining Morgantow West Virginia, 1981 Nov; :88-98
Two existing predictive methods were chosen for evaluation; an influence function (bals' theory) and a profile function (hyperbolic). These were applied to several field-measured subsidence profiles over U.S. coal mines. The effect of homogeneous versus nonhomogeneous overburden on surface subsidence is demonstrated and the utilization of bals' theory as a subsidence predictive method for both types of overburden is examined. The major factor affecting subsidence profile characteristics is the migration of the inflection point toward the centerline of the longwall panel. A computer program was written to aid in the analysis.
Proc. Workshop Surface Subsidence Due to Underground Mining. Morgantow, West Virginia, Nov.1981, PP. 88-98