Research on the technology of filling and repeated mining in thick coal seam affected by small mine gob area
Filling repeated mining technology of small coal mines mainly researches on the gob or cavity in the coal seam formed by the mining method of small coal mines. Adopting the means of field exploration, indoor test, the simulation experiment, pumping filling material that is stable in mechanical property and low in price into the gob, it can meet the needs of normal mining and achieves the purpose of mining safety and efficiency. The keys of this technology are detecting, the stability and controlling method of the surrounding rock, management and safe-efficient mining process technology. The gob of small coal mines in B909 working face of Anjialing No.2 underground coal mine affected the advancing of the working face. In view of this situation, the detecting method and solution were researched. The results showed that, combining geophysical exploration and the trinity of detecting, releasing, controlling, ae specific location of the goal could be mastered accurately and the harmful factors could be removed. According to the characteristic of recovery, the suitable filling material and scheme were chosen to deal with the gob by grouting. This guaranteed the stability of the surrounding rock and the coal in the period of mining. These methods mentioned above realized the safely and efficiently mining of the coal seam affected by the gob of small coal mines and provided experiences to the coal resource exploitation of similar condition.
gob of small coal mines detecting filling repeated mining
ZHU Jian-ming MA Zhong-wen XU Jin-hai WU Ji-nan
School of Civil Engineering, North China University of Technology, Beijing 100041, China SchooI of T SchooI of Traffic Science and Technology, Beihang University, Beijing 100191, China School of Mining Engineering, China University of Mining and Technology, Xuzhou 221008, China China Coal Pingshuo Coal Co., Ltd. Shuozhou 003360, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
1285-1291
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）