Abstract: In order to analyze the law of roof pressure under the condition of shallow sublevel caving in Shanxin Coal Mine and guide the safe mining in the mine,KJ21 type mining pressure monitoring system is adopted for the the observation for 18041 fully mechanized caving working face.By using the mine pressure monitoring system,the adaptability of the fully—mechanized caving support is analyzed from the aspects of the initial and final resistance of the support,the increasing resistance of the support,frequency distribution of the working resistance of the support and the balance of the force of the jack.The results show that support adaptability of the working face is good,support selection is reasonable.

Key words: Thin bedrock, Extra—thick coal seam, Fully mechanized caving mining, Support adaptability