排放钻孔快速促排瓦斯合理深度研究
发布时间：2018-11-05 17:55
【摘要】：针对伏岩煤业煤巷掘进局部施工的排放钻孔消突效果差,掘进时瓦斯超限严重、频繁等问题,结合现场应用分析认为排放钻孔深度是影响排放效果的关键因素,采用现场钻屑法演算了煤巷前方煤体应力和煤层透气性的变化规律,在此基础上确定排放钻孔合理深度为12.2 m。经在3013运输顺槽掘进工作面试验,回风流瓦斯浓度能控制在0.4%以内,掘进速度提高近1倍,取得了理想效果。
[Abstract]:In view of the problems such as poor outburst elimination effect of drainage boreholes in local construction of coal roadway excavation in Fuyan coal industry, serious gas overlimit and frequent in excavation, combined with field application analysis, it is considered that the depth of drainage borehole is the key factor affecting the drainage effect. The variation law of coal body stress and coal seam permeability in front of coal roadway is calculated by using field drilling method, and the reasonable depth of discharge borehole is determined to be 12.2 m. The gas concentration in the return air flow can be controlled within 0.4% and the tunneling speed is nearly doubled through the test in 3013 transport driving face along the trench, and the ideal effect has been obtained.
【作者单位】： 河南理工大学安全科学与工程学院;
【基金】：国家自然科学基金资助项目(51204065) 河南省科技攻关资助项目(122102310564)
【分类号】：TD712.6
[Abstract]:In view of the problems such as poor outburst elimination effect of drainage boreholes in local construction of coal roadway excavation in Fuyan coal industry, serious gas overlimit and frequent in excavation, combined with field application analysis, it is considered that the depth of drainage borehole is the key factor affecting the drainage effect. The variation law of coal body stress and coal seam permeability in front of coal roadway is calculated by using field drilling method, and the reasonable depth of discharge borehole is determined to be 12.2 m. The gas concentration in the return air flow can be controlled within 0.4% and the tunneling speed is nearly doubled through the test in 3013 transport driving face along the trench, and the ideal effect has been obtained.
【作者单位】： 河南理工大学安全科学与工程学院;
【基金】：国家自然科学基金资助项目(51204065) 河南省科技攻关资助项目(122102310564)
【分类号】：TD712.6
【参考文献】
相关期刊论文 前6条
1 王建国,郑保川,辛新平;煤巷掘进综合防突技术措施[J];煤炭科学技术;2003年08期
2 尚群;杨战伟;靳建伟;;预抽煤层瓦斯交叉钻孔合理孔间距的研究[J];煤炭科学技术;2009年09期
3 李钢;范喜生;马丕梁;樊少武;贾东旭;;本煤层瓦斯预抽钻孔合理布置间距的确定[J];煤炭科学技术;2011年03期
4 路学q，
本文编号：2312863
本文链接：https://www.wllwen.com/kejilunwen/anquangongcheng/2312863.html
