摘要
为了研究高压水射流割缝技术在余吾矿的应用效果,采用理论分析与现场测试相结合的方法,在该矿N1103工作面运输顺槽进行施工。选择瓦斯抽采浓度、抽采有效半径作为评价指标。通过对实施高压水射流割缝技术的钻孔和未实施该技术的钻孔进行对比,发现实施后的钻孔瓦斯抽采浓度提高了近20%,有效抽采半径提高到原来的近3.5倍,验证了高压水射流割缝技术在余吾矿的适应性。
The method of combining theoretical analysis and field testing was used to carry out on-site construction along the beltway in Yuwu Mine N1103 working face.The drained gas concentration and effective radius for drainage were selected as the evaluation indicators.By comparing the drilling with the high-pressure water jet slitting technology and the drilling without the technology,it is found that the gas drainage concentration of the boreholes has been increased by nearly 20%,and the effective drainage radius has been increased by nearly 3.5 times.The applicability of the high-pressure water jet slitting technology in Yuwu mine was proved.
出处
《山西焦煤科技》
2020年第2期4-6,共3页
Shanxi Coking Coal Science & Technology
关键词
高压水射流
增透
抽采浓度
抽采半径
High-pressure water jet
Permeability increasing
Drainage concentration
Drainage radius
