摘要
Along with underground mining, movement and deformation of overburden gradually extends in all direchons and up to the ground surface and finally forms a ote subsidence basin. The surface movement progressively stabilhes until coal mining is completed and forms a stable movement basin. Two types of basins, i.e- static and dynamic subsidence basins are distinguished in the paper, a classification of the basins and a description of their characteristics are presented.Based on the analysis of measured data by Yanzhou Coal Mining Burca, during mining operation, the movement charcteristics of surface point, subsidence equation, subsidence rate equation and the law of distribution of movement parameters of thee point relative to principal section of movement basin are addressed in this paper. Moreover the calculating formula of the movement parameters for an arbitrary thee point and the expression for calculating the maximum subsidence rate are also proposed. On the basis of the findings, the movement deformation formula for an arbitrary surface point in any directions during mining operation is
Along with underground mining, movement and deformation of overburden gradually extends in all direchons and up to the ground surface and finally forms a ote subsidence basin. The surface movement progressively stabilhes until coal mining is completed and forms a stable movement basin. Two types of basins, i.e- static and dynamic subsidence basins are distinguished in the paper, a classification of the basins and a description of their characteristics are presented.Based on the analysis of measured data by Yanzhou Coal Mining Burca, during mining operation, the movement charcteristics of surface point, subsidence equation, subsidence rate equation and the law of distribution of movement parameters of thee point relative to principal section of movement basin are addressed in this paper. Moreover the calculating formula of the movement parameters for an arbitrary thee point and the expression for calculating the maximum subsidence rate are also proposed. On the basis of the findings, the movement deformation formula for an arbitrary surface point in any directions during mining operation is highilighted
