摘要
为了解决保德煤矿井下定向钻孔抽采瓦斯浓度低、抽采有效期短的问题,采用理论分析、数值模拟和现场实测相结合的方法,优化保德矿定向钻孔抽采负压。结果表明:保德矿81310回风区域定向钻孔在抽采负压为13kPa时,抽采期内瓦斯浓度平均达到88%,抽采瓦斯纯量平均为2.48 m^(3)/min,抽采效果最佳。
In order to solve the problems of low gas concentration and short effective period of gas extraction in directional drilling in the underground of Baode coal mine,theoretical analysis,numerical simulation and field measurement were combined to optimize the negative pressure of gas extraction in directional drilling.The results show that,when the negative pressure of gas extraction is 13kPa in the directional drilling of the 81310return air area of Baode coal mine,the average gas concentration in the gas extraction period reaches 88%,and the average gas purity is 2.48m^(3)/min,with the optimal effect of gas extraction.
作者
郭鑫
薛生
GUO Xin;XUE Sheng(School of Energy and Safety,Anhui University of Science and Technology,Huainan,Anhui 232001,China;Key Laboratory of Mine Safety and High Efficient Mining Jointlybuilt by Province and Education Ministry,Anhui University of Science and Technology,Huainan,Anhui 232001,China)
出处
《矿业研究与开发》
CAS
北大核心
2021年第2期144-148,共5页
Mining Research and Development
基金
国家重点研发计划项目(2018YFC0808000).
关键词
超厚煤层
瓦斯抽采
抽采负压
定向钻孔
Ultra thick coal seam
Gas extraction
Negative pressure of gas extraction
Directional drilling
