中关铁矿帷幕灌浆实验孔孔斜成因及处理

Cause and Treatment for Hole Deflection of Curtain Grouting in Zhongguan Iron Mine

中关铁矿帷幕灌浆孔设计深度深、钻孔垂直度要求高,加之地质条件、水文条件的特殊性和复杂性,钻孔偏斜超标严重,经过实践,摸索出一套有效的防斜、纠斜技术措施。在分析孔斜原因的基础上,介绍了该工程的防斜、纠斜技术措施和取得的效果。

Curtain grouting design for Zhongguan iron mine demands big depth and high verticality, but under the complex geological and hydrological conditions, borehole deviation is serious. This paper presents control and correction measures with analysis on the cause of deviation.