空气潜孔锤钻进典型事故原因分析及处理措施

Analysis on the Causes of Typical Accidents of Air DTH Hammer Drilling and the Treatment Measures

贵州省地质矿产勘查开发局就"贵州复杂地层深井钻探工艺应用研究"科研项目中"空气潜孔锤钻进技术"部分进行了试验研究,在试验过程中曾出现了锤头断裂、硬质合金齿折断、冲击器堵塞并阻卡、泥环包裹、卡埋钻、井眼弯曲等典型事故。详细分析了出现这些典型事故的原因,形成了避免和解决这些典型事故的系统技术措施。该成果经现场检验效果良好。本文对该成果进行了全面阐述,以期为同类施工提供借鉴。

The research on＂Air DTH Hammer drilling technology＂was carried out by the Bureau of Geology and Mineral Exploration and Development of Guizhou Province,which was a part of the scientific research project of＂Application research on deep well drilling technology in Guizhou complex strata＂.During the test process,some typical accidents happened,such as the hammerhead fracture,hard alloy tooth fracture,impactor blockage and blocking,mud ring wrapping,drill pipe sticking burying and borehole bending.The causes of these typical accidents are analyzed in detail,and the systematic technical measures to avoid and solve these typical accidents have been formed.The results are proved good through field inspection and this paper gives a comprehensive elaboration on this achievement in order to provide reference for the similar construction.