坚硬厚煤层综放开采顶煤联合弱化技术探讨

Some Researches in Hard Top-coal Caving Mining Thick Coal Seam Injection-blasting "Joint" Weakening Technology

针对大同煤矿集团公司云冈矿坚硬厚煤层综放开采顶煤冒放困难造成的资源回收率和开采效率低的难题,从顶煤弱化机理入手,进行了注水、爆破等弱化方法的研究,最终在现场实施了"注水-爆破"联合弱化、同时对顶板进行爆破预裂的复合技术。

Focused on the low recovery rate of resources and the mining efficiency problem caused by hard top-coal caving mining thick coal seam in Yungang Coal Mine,we research technology of weakened methods such as watering,blasting at the scene,started from the top-coal weakening mechanism,Finally we carried out the ＂water injection-blasting＂ joint weakening,simultaneously on the roof of the presplit blasting composite technologies,some good results were obtained.