泵吸反循环钻进工艺在辐射井竖井施工中的应用  

Application of pump suction reverse circulation drilling technology in the construction of radial wells

作　　者：陈霄[1,2] 李海伟 CHEN Xiao;LI Hai-wei(China Institute of Water Resource and Hydropower Research,Beijing 100048,China;Beijing IWHR Corporation,Beijing 100048,China)

机构地区：[1]中国水利水电科学研究院,北京100048 [2]北京中水科工程集团有限公司,北京100048

出　　处：《地下水》2022年第6期125-127,135,共4页Ground water

摘　　要：傍河含水层与河水的水力联系密切,能够提供充足的水量和优良的水质。辐射井是傍河取水的高效开发模式,竖井是水平辐射管施工、集取水和安装水泵的场所,是成井的前提条件。泵吸反循环钻进具有钻进效率高、钻头损坏小、反映地层地质情况等优点,适合于在第四系松散地层中钻进大口径钻孔。本文较为详细的介绍了辐射井竖井泵吸反循环钻进工艺,并在传统钻头的基础改进钻头形式扩大了钻进工艺的适用范围,通过实例列举了三个较为代表性的水源地辐射井竖井钻进应用情况,泵吸反循环钻进均能取得较好的进尺,在辐射井竖井钻进中发挥着巨大作用。The riverside aquifer is closely related to the hydraulics of the river water, and can provide sufficient water volume and excellent water quality. Radiation well is an efficient development mode for water intake by river, and vertical well is the place where horizontal radiant pipe is constructed, water collection and water pump installation, and it is the precondition for well completion. Pumped reverse circulation drilling has the advantages of high drilling efficiency, little damage to the drill bit, reflecting the geological conditions of the stratum, etc. It is suitable for drilling large-diameter holes in the loose strata of the Quaternary system. This paper introduces the pumping reverse circulation drilling technology of radial well vertical well in detail, and improves the drill bit form on the basis of traditional drill bit to expand the scope of application of the drilling process. Three representative radial well vertical wells in water source areas are listed by examples. In terms of drilling application, pump suction reverse circulation drilling can achieve good footage, and it plays a huge role in vertical well drilling of radiation wells.

关 键 词：泵吸反循环钻进 辐射井 竖井 钻头 

分 类 号：P641.72[天文地球—地质矿产勘探] P634.5[天文地球—地质学]