祁南煤矿714工作面高位钻孔优化研究  

Study on Optimization of Highly-located Boreholes in the 714 Working Face of Qinan Coal Mine

作　　者：陈奇伟[1] 李增华[1] 杨永良[1] 赵长闯[1] 马新青[1] 王亚丽[1] 杨玉静[1] 彭英健[1] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008

出　　处：《煤矿安全》2010年第1期1-4,共4页Safety in Coal Mines

基　　金：煤炭资源与安全开采国家重点实验室开放基金项目(07KF11)

摘　　要：为了有效地提高高位钻孔瓦斯抽采效果,利用相似材料模拟试验,分析了祁南煤矿714工作面顶板冒落规律,结合经验公式,综合判定了煤层上覆岩层"竖三带"的分布范围,确定了裂隙带为距71煤层顶板上方18.4～49.0m的岩层区域,最终高位钻孔法距参数取值范围选择为18.0～34.0m。In order to improve gas drainage effect of highly- located borehole effectively, the distribution range of ＂ the vertical three zone＂ in overlying strata above coal seam was comprehensively judged by the law of gob roof caving in the 714 working face of Qinan coal mine , analyzed with the similar material simulation test, and the empirical formulas for calculating the height of caved zone and fractured zone, obtaining the range of fractured zone is apart from above 7t coal seam roofs the 18.4 - 49.0 metres rock layer region, and the chosen range of the normal distance parameter of highly - located boreholes was chosen from 18.0 metres to 34.0 metres .

关 键 词：高位钻孔 瓦斯抽采 相似材料模拟试验 裂隙带 

分 类 号：TD712[矿业工程—矿井通风与安全]