中文摘要：

建立了地表移动观测站,对综放开采地表下沉速度进行了现场实测。根据观测资料,分析了地表下沉特征;得出了地表最大下沉速度及最大下沉速度滞后角等参数。研究表明：该区域具有地表移动剧烈、地表下沉速度快、地表出现超前裂缝及破坏严重等特点。

英文摘要：

The surface subsidence velocity was measured in field in fully-mechanized sublevel caving mining area by established surface movement monitoring station.The characters of surface subsidence were analyzed according to observed data,then parameters were derived including maximum of surface subsidence velocity and lag angle of surface subsidence maximum velocity.It was shown that the surface of studied area had characteristics of severe movement,high subsidence velocity,advance fissures and serious destroy.