选煤厂矸石浆体充填地面工艺系统设计研究

Study on design of the surface grouting system for underground backfilling with refuse from coal preparation plant

为了解决选煤厂矸石外排、露天堆放等处理方式带来的环境污染和地质灾害问题,结合矿井客观生产条件,采用矸石井下注浆充填技术,对选煤厂矸石浆体充填方案进行了工程设计研究。结果表明:采用邻位注浆浆体充填法将选煤厂矸石用于井下工作面废弃巷道和煤柱回填区域专用充填巷道的充填,可实现矸石零排放,使矿井选煤厂的生产满足绿色环保的要求,工业可实施性强,为煤矸石综合利用的地面工艺系统设计起到引领作用。

In order to tackle the problems of environmental pollution and geological hazards caused by dumping or piling-up of refuse from coal preparation plants,and in line with the objective production conditions of mines,a study is made on the technique for underground backflling through grouting with refuse as grouts and the design of the related engineering schemes.Study result shows that backilling of underground abandoned face workings and the special stowing roadway of the worked-out area after extraction of pillars through adjacent grouting with refuse as flling material can eliminate the out-dumping of refuse,making it possible for coal preparation plants to operate in a green manner according to specified environmental protection requirements.Moreover,the method is high in industrial operability.The study made in the paper can serve as a guidance for the design of surface grouting system for realizing comprehensive utilization of coal refuse.