土工基础

›› 2019, Vol. 33 ›› Issue (4): 438-441.

• 工程实录 • 上一篇    下一篇

强岩溶场地岩土工程勘察中的钻探技术应用

王 剑1,2，龙 举1,2，李 勇1   

  1. （1.贵州省地矿局111地质大队，贵阳 550008；2.贵州地质工程勘察设计研究院，贵阳 550008）
  • 收稿日期:2019-07-24 修回日期:2019-07-25 出版日期:2019-08-20 发布日期:2019-08-16
  • 作者简介:王 剑（1968-），男，高级工程师，研究方向为工程钻探与勘察、地质灾害防治。
  • 基金资助:

    贵州省地矿局地质科研基金项目（黔地矿科合〔2019〕12号）

Geotechnical Investigation Drilling Methods in Well Developed Karst Terrain

WANG Jian1,2, LONG Ju1,2, LI Yong1   

  1. (1.Division of 111 Geological Investigation, Guizhou Bureau of Geology and Mineral Exploration Development, Guiyang 550008;
    2.Guizhou Geological Engineering Investigation, Design and Research Institute Co. Ltd., Guiyang 550008)
  • Received:2019-07-24 Revised:2019-07-25 Online:2019-08-20 Published:2019-08-16

摘要： 由于岩溶的发育和分布具有较高的隐蔽性和不均匀性，在强岩溶场地进行岩土工程勘察钻探施工是一项非常复杂和特别重要的工作。需要多积累钻探施工经验、提高钻探施工技术，确保岩土工程勘察质量。结合贵阳新世界3F地块岩土工程勘察项目钻探施工实践，针对强岩溶场地岩土工程勘察中的钻探施工遇到的漏浆、卡钻、垮孔、埋钻、地表塌陷、岩芯采取率低等常见问题及其产生原因进行了总结，并对其相应的处理方法进行了讨论。

关键词: 岩溶场地, 岩土工程勘察, 钻探技术, 处理方法

Abstract: Due to the hidden and heterogeneous characteristics of rock cavities in well developed karst terrain, the geotechnical investigation work in these areas is complicated and critically important. To ensure the investigation quality, accumulated geotechnical drilling in soil and rock experience and skills are necessary. This paper presents a geotechnical investigation case history of test boring drilling in New World 3F Contract Block Project in Guiyang. The frequently encountered issues in the testing boring drilling, such as, fluid leak and loss, drill bit jam, borehole caving, drill bit loss, ground subsidence surround borehole and low rock core recovery, are discussed int eh paper. Improvement methods are also proposed.

Key words: well developed karst terrain, geotechnical engineering investigations, drilling methods, treatment methods