深厚堆积体地层钻进工艺方法研究

The research and test on drilling technology in the deep accumulated strata

太钢(集团)有限公司矿业公司峨口铁矿是一个从20世纪60年代就开始开采的老矿区,经过长期开采储量已严重不足。为了延长矿山寿命,需要进一步扩大勘探范围,在原有矿山周边地区进行勘探。最初采用岩心勘探钻机进行常规回转钻进加套管护壁,历时3个月。在上部堆积体地层最大钻孔深度达到约20m,再也无法继续钻进,使勘探工作被迫停止。针对深厚堆积体地层钻孔施工遇到的具体困难,介绍了风动潜孔锤双管跟管钻进在工程施工中的应用,在对深厚堆积体地层进行分析的基础上,探讨进行深厚堆积体地层钻孔施工的工艺方法及技术措施;在钻孔结构基础上选择钻孔设备及钻孔机具的一般原则,对深厚堆积体地层的钻孔工程施工具一定指导意义。

Ekou iron mine belongs to TaiGang(Group).It is an old mine since 60 s.The reserve has been seriously shortage after it is mined for long-term.For extension life of mine,it is needed further to enlarge the range of exploration.The exploration is made by drilling holes around the old mine.At first,drilling is done by using core drill and casing protecting.The deepest drilling hole is only more than 20m during three months,and the exploration is stopped because drilling can not be made continuously.Aimed at oc...