摘要
结合公格营子煤矿水体下压煤似膏体巷式充填开采的实践,介绍了似膏体充填材料的组成与配比及充填工艺流程,研究了巷式充填采煤的工作面布置方式、充填巷掘进充填顺序和支护方式、巷道充填工艺;分析了巷式充填开采的地表下沉和井下涌水控制效果及经济效益。实践表明,地表沉降得到有效控制,地表下沉系数仅为3.5%;井下涌水量由350 m3/h减小到150 m3/h,大幅改善了井下安全生产条件,可解放压煤量300万t。
Combined with the mining practice with roadway paste-like backfill under water body in Gonggeyingzi Coal Mine, the composi- tion and ratio of past-like backfill materials and the backfill technique process were elaborated, the working face arrangement way of road- way paste-like backfill, the drivage backfill sequence and support pattern of backfill-roadway and the roadway backfill process were stud- ied.In addition,with roadway backfill mining,the paper also analyzed the control effects and economic benefits of surface subsidence and underground water gushing.The practice indicated that the surface subsidence were effectively controlled, the subsidence coefficient was on- ly 3.5% ,the underground water inflow reduced to 150 m3/h from 350 m3/h, the coal mine production safety conditions had been greatly improved and three million tons of coal resources could be liberated.
出处
《煤炭科学技术》
CAS
北大核心
2014年第1期37-39,54,共4页
Coal Science and Technology
基金
中央高校基本科研业务专项基金资助项目(2010YZ03)
关键词
似膏体充填
巷式充填
水体下采煤
巷道支护
paste-like backfill
roadway backfill
mining under water bodies
roadway surpport
