井下矸石泵送充填物料配比的试验研究  

Experimental study on filling materials ratio of gangue pumping

作　　者：滕广林[1] 

机构地区：[1]山东能源新汶矿业集团有限责任公司,山东省新泰市271233

出　　处：《中国煤炭》2014年第8期122-124,135,共4页China Coal

摘　　要：为解决矿井矸石的地面排放问题,实现矸石在井下直接泵送充填至采空区,在华丰煤矿进行了井下试验研究。采用正交试验方法研究矸石的破碎粒度、物料浓度和水泥添加量对井下矸石泵送系统的泵送和充填效果以及充填成本的影响。试验表明,矸石破碎粒度的大小对矸石膏体的可泵性影响显著,水泥的添加量对矸石膏体的抗压强度和充填成本影响明显。根据试验所确定的矸石破碎粒度、水泥添加量及质量浓度的最佳组合,利用该系统实现了普采工作面的有效充填,为井下矸石处理提供了一个新途径。To solve mine gangue ground release problem and to achieve gangue directly pump to goaf stowing,research has been conducted in Huafeng coal mine.Crushing particle size,pum-ping and filling effect of gangue pumping system by material concentration and addition of cement and the filling cost have been studied by using orthogonal test method.The experiment results showed that gangue crushing particle size significantly affected the pumpablity of gangue paste. Cement amount obviously affected the compression strength of gangue paste and filling cost. Gangue crushing particle size,cement amount and quality have been determined.This system a-chieved effectively filling in the working face and provided a new method for gangue treatment.

关 键 词：矸石泵送 采空区充填 正交试验 物料配比 

分 类 号：TD849[矿业工程—煤矿开采]