挖金湾煤矿山4煤综放安全开采工艺研究

Study on Safe Fully-mechanized Top Coal Caving Mining Technics of Shan No.4 coal in Wajinwan Coal Mine

综放开采工艺拥有相对高的开采效率,对于不同的煤矿而言,由于所处地质环境存在一定差异,故所设定的综放开采参数有所差异。结合挖金湾煤矿实际情况,确定综放开采工艺中最为关键的放煤步距以及放煤方式,制定井下瓦斯抽放方案,在挖金湾煤矿山4煤层开采过程中综放工艺的实际应用取得了良好效果。

Fully-mechanized caving mining technology has relatively high mining efficiency. For different coal mines, due to the difference of geological environment, the parameters of fully-mechanized caving mining are different. Combining with the actual situation of Wajinwan Coal Mine, the most critical caving step and caving method in fully-mechanized caving mining technology were determined, and the underground gas drainage scheme was worked out. Good results have been achieved in the practical application of fully-mechanized caving technology in the mining process of No. 4 coal seam in Wajinwan Coal Mine.