Analysis on the structure stability of hard and massive overlying strata

Support plate theory is used to analyze the structure stability of the hard strata,combining with "three zones with surface subsidence theory" to classify the support plate,giving the mechanics judging criterion of the different type support plate,making use of the result of the similar material simulation and the criterion of support plate test to analyze and estimate.It was suggested that this classified judging criterion was used well in mining subsidence and damage project.