反井钻机先导孔钻进常见事故原因分析及处理措施

Cause Analysis and Treatment Measures of Common Faults Occurred in Pilot Hole Drilling of Raise Boring Machine

论文论述了先导孔钻进在反井钻井施工中的作用,对先导孔钻进中常见事故进行了原因分析,重点对反井钻进先导孔施工过程中可能发生的缩颈、塌孔、卡钻、偏斜超限、漏失等主要常见事故进行了深入分析,并在此基础上,给出了指导性处理预案与办法,对反井钻进先导孔施工具有一定指导意义。

The paper stated a role of pilot hole drilling in a construction process of a raise boring and had a cause analysis on common faults occurred in the pilot hole drilling. The paper stressed a deep analysis on a hole top shrinkage, hole wall collapsing, drilling sticking, deviation over limit, circulation lost and other common faults. Based on the circumstances, a guidance treatment plan and method was provided and would have certain guidance significances to the pilot drilling operation of the raise boring.