摘要
补连塔煤矿12520工作面在掘进胶运顺槽、切眼过程中分别揭露一组冲刷带,为查明两组冲刷体是否连续为同一冲刷带,并探测出冲刷带对12520工作面内煤层厚度及水平范围的影响程度,采用定向钻进技术施工了1个主探测孔、20个分支探测孔来探测煤层顶底板信息,获得轨迹剖面,推算煤厚,绘制煤厚等值线图。结果表明,使用定向钻进技术施工,工期短、精度高、经济节约,较常规勘探优势明显。
In the tunneling process of transport roadway and open-off cut in №12520 working face of Bulianta Coal Mine,the washout zone was revealed respectively. in order to identify the characteristics and the influence to mining of two groups of washout zone,using directional drilling technology,one main detection drilling and 20 branch drillings were constructed.The results show that the detection technology has obvious advantages compared with conventional exploration technology.
出处
《陕西煤炭》
2015年第6期71-73,107,共4页
Shaanxi Coal
关键词
定向钻进技术
探测
冲刷带
directional drilling technology
detection
washout zone
