关键词: 厚松散层, 薄基岩, 地表沉陷, 岩移参数, 概率积分法, 采动影响

Abstract: Aiming at the condition that surficial buildings security would be influenced by the face mining under thick loose bed and thin bedrock, the surface subsidence prediction parameters caused by face mining was studied and determined in combination with the measured results of surface subsidence in surrounding mines. The probability integral method was used to analyze the influence of future mining on surface buildings, and the face mining parameters which conduced to protect the buildings were determined through adjusting the mining boundary and partial mining thick. The results proved that it’s difficult to ensure the safety of the buildings for all mining or partial thickness limitation of the working face, and the working face retracting 44m and 251m along the direction of cutting and advancing respectively could meet the protection requirements of the buildings.