石拉乌素煤矿南区开采沉陷演变规律研究OA

The Shilaosu Coal Mine in Inner Mongolia is covered with thick weakly cemented sandstone,and there is an abnormal subsid-ence pattern during mining.The subsidence rate(maximum subsidence/mining thickness)of the first mining face after mining is about 0.03,and the subsidence rate of the second mining face after mining has sharply increased to around 0.3.In order to study the evolution law of surface subsidence caused by high mining height in the southern mining area of Shilaosu Coal Mine,the No.1208 fully-mecha-nized mining face of Shilaosu Coal Mine was taken as the research object.Based on the measured data of surface subsidence,the move-ment and deformation law of surface subsidence caused by fully-mechanized mining and the predicted parameters of probability integra-tion method were obtained through data sorting,curve drawing,parameter calculation,and comprehensive analysis.The preliminary reve-lation of the evolution law and characteristics of surface subsidence under the geological mining conditions provides a scientific basis for the subsequent prediction and control of mining subsidence in the area.