超高水材料充填空巷研究与工业性试验

长期以来,工作面过空巷是煤矿开采中难以解决的问题.传统的空巷支护方式不能有效地对顶板和煤壁提供足够的阻力或阻止围岩破坏范围的扩大.本文在分析工作面空巷围岩活动规律和超高水材料性能的基础上,论证了超高水材料充填空巷的可行性,并确定了充填体的力学参数和充填工艺.现场试验证明,采用超高水材料充填空巷是一种安全、经济、高效的方法,较传统空巷支护方法具有较大的优势.

Research and Practice on Superhigh- water Material Filling to Abandoned Roadway

It is always a difficulty for the working face passes through the abandoned raodway.The traditional methods can not consolidate the crushed coals in both sides of the abandoned workings or to maintain the rock stability of the abandoned workings successfully.The success of goaf filling methods with superhigh-water material offers a new choice for the supporting of abandoned workings.In this paper,based on the analysis for the law of surrounding rock of the abandoned roadway in the front of the working face and the superhigh-water material,the mechanical parameters of backfilling mass and the filling system was defined.Successful practice shows the application of such backfill material to abandoned roadway is a better solution than others to support abandoned roadway safely,economically and quickly.