机械造穴技术在立井井筒揭煤中的应用实践  

Application Practice of Mechanical Cavity Making Technology in Coal Uncovering in Vertical Well Shaft

作　　者：刘宏光 Liu Hongguang(Boli Coal Mine Co.,Ltd.of Huayang Group,Heshun Shanxi 032700)

机构地区：[1]华阳集团泊里煤矿有限公司,山西和顺032700

出　　处：《机械管理开发》2022年第8期156-158,共3页Mechanical Management and Development

摘　　要：泊里煤矿有限公司为华阳集团下属子公司,矿井设计产能为5.0 Mt/年,按照煤与瓦斯突出矿井设计建设,共设计5个井筒,目前处于基建阶段。中煤科工集团重庆研究院有限公司对井田内15号煤层揭露前的突出危险性进行评估,结果为泊里煤矿3~15号煤层均具有煤与瓦斯突出危险性。井筒施工期间,为杜绝煤与瓦斯突出及揭煤期间瓦斯超限,对1 m以上的厚煤层进行机械造穴并预抽。经实践表明,与以往的普通钻孔预抽对比,机械造穴并预抽在揭煤期间既杜绝了煤与瓦斯突出,又降低了瓦斯浓度,应用效果显著。The mine has a design capacity of 5.0 Mt/year and is designed and built according to the design of coal and gas prominence mine, with a total of 5 shafts, and is currently in the infrastructure stage. Ltd. evaluated the prominence risk of No. 15 coal seam in the well field before its disclosure, and the result is that coal seams No. 3 to No. 15 of Po Li Mine are all in danger of coal and gas prominence.During the construction of the shaft, in order to prevent coal and gas protrusion and gas overlimit during coal uncovering, mechanical cavity making and pre-pumping were carried out for thick coal seams above 1 m. Practice has shown that, compared with the previous pre-pumping by ordinary borehole, mechanical cavitation and pre-pumping not only eliminates coal and gas protrusion but also reduces gas concentration during coal uncovering, which is effective.

关 键 词：机械造穴 立井井筒 揭煤 预抽 

分 类 号：TD712.6[矿业工程—矿井通风与安全]