摘要:
为了有效地控制地表移动变形以保护地表建筑物,保证煤炭资源的采出率,最大限度地减小开采损害的影响,应用宽条带开采方案,以彬长矿区的采矿地质条件为工程背景,研究厚黄土层下开采的地表移动规律。通过在开采区域地表布设监测点的方法,结合亭南煤矿现场观测实测数据并对其进行理论分析,描述了深部大采深宽条带开采的地表移动规律,给出了彬长矿区地表移动变形的重要参数,主要影响半径为295 m,主要影响范围角正切值为1.93,地表沉陷范围343 m,边界角为58.96°。运用概率积分和威尔逊理论得出该矿区多个条带工作面开采时,煤柱宽度和采出宽度的最佳匹配计算方法,基于协调开采原则得出了合理的条带开采参数。结果表明,将研究得到的地表移动参数应用于生产实践取得了良好效果,所得的地表移动参数对该矿区具有一定的参考价值。
Abstract:
in order to effectiv ly control the novement and deformation of the surtace to protect the buidsing on the surface,to ensure the mining rate of the coalresouces and to minimize the infuencesof the mining damage,the paper study the surface movement lav of the underground mining under the tick lces ayer with an aplcaion of the wide stio mining plan.based on the mining geological co dtion in Binchang Mlining Area as the engineering background. with a nethod to distribute the monioring points in the surace in the mining area.in combination with the site obseved and measured data i Tingnan Mine and the theoretica analysis on thedata.the paper stated the surace movement law of the deep mining depth wide stip mining in a deep mine and provided the imporant prameters of the surface ground movement and deformation in Binchang Mining Area T'he main infuence radius was 295 m,the tangent value of the main infuence scope angle was 1.93.the surace ground subsidence scope was 3 43 m and the boundary angle was 58.96 . wen the probatilit inegral and Wwlison Theory were appied to calculate the mining of several stip mining faces in the mining area and the optimun marched caculation method of the coa pillarwiath and mining wicth a rationalstrip mining parameters were obtaned based on the coordinated mining principle. 'he results showed that the surace movement parametrs obtained fom the stuay were appied to the production practces with a good effect and the ground movement parameters obtained would have a certain reference value to the mining area.
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