气动潜孔锤钻进技术在云南旱区找水工程中的应用

Application of Pneumatic DTH Drilling Technology in Water Prospecting Project in Arid Area of Yunnan

摘要:

介绍了采用空气潜孔锤及纵向割缝型UPVC井管技术施工云南楚雄“科技抗旱井”工程，重点阐述了气动潜孔锤钻进技术在坚硬破碎基岩地区水文水井工程中的技术难点、钻进工艺及成井工艺。针对钻进过程中出现的问题，提出钻具改进措施，取得了显著的实钻效果。该工程采用潜孔锤钻进技术提高了钻进效率，减少了工程造价，水井的出水量、水质等各项指标均达到设计要求，获得了良好的经济及社会效益。

Abstract:

The Yunnan “hi-tech anti-drought well project” with pneumatic DTH and longitudinal slotted UPVC well pipe technology was introduced. The paper mainly presented the technical difficulties and drilling & well completion technologies of pneumatic DTH in the application for hydrological well in hard and broken bedrock, and according to the problems in drilling process, improvement measures were put forward to the drilling tool with obvious practical drilling effect. Drilling efficiency was improved in this project construction by DTH, the project cost was reduced, and the water output and quality also met the design requirement.