梅州找矿靶区验证项目钻探施工技术  

Drilling Construction Technology of Meizhou Prospecting Target Area Verification Project

作　　者：谢远彬 XIE Yuanbin(The 8th Geological Brigade of Guangdong Geological Bureau,Meizhou Guangdong 514089,China)

机构地区：[1]广东省地质局第八地质大队,广东梅州514089

出　　处：《地质装备》2022年第6期42-46,共5页Equipment for Geotechnical Engineering

摘　　要：由于梅州找矿靶区验证项目裂隙发育、岩石破碎、溶洞以及覆盖层厚的复杂地层,钻孔施工中常发生漏失、掉块、坍塌垮孔、卡钻等情况。通过选择合理的钻探工艺、降低钻进阻力、采用水泥球护壁堵漏和事故处理技术措施,使该项目钻探工作顺利完成。同时在水泥球护壁堵漏中就地取材,及时处理,达到了护壁效果良好,提高了施工效率。Because of the complex strata of fracture development,rock fragmentation,karst cave and overburden thickness in the verification project of Meizhou prospecting target area,leakage,block falling,hole collapse and sticking often occur in drilling construction.By selecting reasonable drilling technology,reducing drilling resistance,adopting cement ball wall protection and plugging as well as accident treatment technical measures,the drilling work of this project was successfully completed.At the same time,wall protection and plugging is taken timely with cement balls used in local materials to achieve good wall protection effect and improve the construction efficiency.

关 键 词：复杂地层 钻探技术 护壁堵漏 事故处理 

分 类 号：P634[天文地球—地质矿产勘探]