地浸采铀钻孔是实现浸出液循环的途径,不仅控制浸出剂在含矿含水层中的分布和在矿层中的运移情况,还决定了浸出剂能否与矿层中的铀矿物充分发生反应。目前广泛采用的垂直型钻孔,在人口密集、地表植被受保护、征用土地受限等区域施工困难,钻孔布置存在局限性,难以覆盖全部矿床资源。以内蒙古某地浸铀矿床为例,通过采用特殊井下工具、测量仪器定向控制井眼轨迹,使钻头沿着特定方向揭露地下铀矿体,确定了定向井施工技术参数。通过开展成井技术研究,探索定向井在地浸铀矿山的可行性,解决钻孔在征地困难及地表条件受限等区域的施工问题。

Ground-immersed uranium drilling is the way to realize the leachate treatment cycle, controlling the distribution of leachate in aquifers and transport in mineral formations, and determining whether leachates can adequately react with uranium minerals in mineral formations. At present, the vertical drilling methods is widely used, but it is difficult to construct in the densely populated area, the surface vegetation is protected, the land requisition is limited, and the drilling layout is limited, so it is difficult to cover all the mineral resources. In this paper, using a special underground tool and measuring instrument to directly control the borehole trajectory, so that the drill bits reveal the underground uranium ore body in a specific direction, determine the technical parameters in the construction process, explore the feasibility of the directed well in the ground-immersed uranium mine, reduce the cost of land acquisition, improve the adaptability of complex terrain, and solve the problem of drilling construction in the complex areas.