祁南矿1025工作面顶板走向钻孔设计技术及抽放效果考察分析  

Design of Bore-holes on Roof Strike in No.1025 Face and Investigation of Gas Drainage Effect n Qinan Mine

作　　者：郭丛林[1] 陈陆望[2] 孙尚云[1] 

机构地区：[1]淮北矿业集团祁南煤矿,安徽宿州234000 [2]安徽理工大学资环系,安徽淮南232001

出　　处：《矿业安全与环保》2003年第3期56-57,62,共3页Mining Safety & Environmental Protection

摘　　要：介绍了祁南煤矿工作面顶板走向钻孔设计思路及有关技术,并以该矿1025工作面上顺槽第一钻场3#、4#孔为例,着重从钻孔抽放浓度钻孔瓦斯流量、孔口离工作面水平距离和钻孔抽放负压这4个方面考察其抽放效果,得出了它们之间相互关系,并指出了钻孔的施工层位是影响顶板走向钻孔抽放效果的首要因素,1025顶板走向钻孔终孔点离10煤层顶板16～20m抽放效果最佳。This paper gives a description of the design thinking and key technique of bore-holes on the roof strike of the working face in Qinan Coal Mine. Taking No.3 and 4 holes at the first drilling site in the gate of No.1025 face as an example, the author made an emphatic investigation on the draiange effectiveness according to the gas concentration and gas flow in bore-holes, the horizontal distance from hole mouth to the working face, and the negative pressure for gas drainage and obtained the relation between them. The author pointed out that the drilling position of the hole is the key influence factor on the drainage effectiveness by holes on roof strike and the drainage effectiveness is the best when the end of the finished hole on the roof strike of No.1025 face is 16~20m away from the roof of No. seam.

关 键 词：顶板走向钻孔 瓦斯流量 抽放效果 设计技术 钻孔布置 钻孔接替 钻孔合荐工艺 

分 类 号：TD712.62[矿业工程—矿井通风与安全]