Department of Mining and Design, Tiandi Science and Technology Company Limited Technical Appraisal
Committee of Coal Mining Damage, China Coal Society Gaotouyao Mine, Inner Mongolia North Union Power and
Energy Development Company Limited

基于鄂尔多斯地区风积砂覆盖、厚煤层、浅埋深、工作面尺寸大的特点,为掌握综采工作面快速推进在高强度开采条件下的地表移动变形规律,在鄂尔多斯某煤矿试验区开展了地表移动观测站观测研究,历经约15个月的长期观测并对取得的实测数据分析,计算求得该条件的地表移动周期特征,拟合求取了一套完整的地表沉陷计算参数和角量参数,分析了该地质采矿条件下地表沉陷预计参数、角量参数与地表动态变形特征。研究结果表明:在鄂尔多斯地区高强度综采条件下,地表移动变形具有沉陷分布集中、地表下沉系数较大、地表动态移动变形值大而剧烈、地表下沉盆地边界收敛缓慢、地表移动初始期与活跃期均较短的特征。

Based on the aeolian sand cover, thick seam, shallow mining depth, large coal mining face size and other features in Ordos Area, in order to master the ground surface displacement deformation law caused by the rapid pushing forward of the fully mechanized coal mining face under the high intensity mining condition, a n observation study was conducted on the surface displacement observation station in a trial block of a coalmine, Ordos Area. A 15 months long period observation was experienced and an analysis was conducted on the measured data. The surface displacement periodical features under the condition were calculated and obtained. Ac ompleted set of the surface subsidence calculated parameters and angular parameters were ftted and obtained. The paper analyzed the estimated parameters of the s urface subsidence, angular parameters and the surface dynamic deformation features in the geological mining condition. The study results showed that under the condit ion of the high intensity mining in Ordos area, the surface displacement and deformation would have the concentrated subsidence distribution, high ground surface subs idence coefficient, surface dynamic displacement and deformation value high and serious, slow convergence of the ground surface subsidence basin boundary, a short i nitial period and active period of the surface displacement and other features.