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。
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.
出处
《中州煤炭》
2010年第6期8-9,19,共3页
Zhongzhou Coal
基金
国家自然科学基金资助项目(50974053)
国家重点基础研究发展计划项目(2009CB226107)
关键词
综放开采
地表下沉速度
湿陷性黄土层
超前裂缝
fully-mechanized sublevel caving mining
surface subsidence velocity
collapsible loess
advance fissures
