介休鑫峪沟煤矿地面2号注浆孔钻探施工技术

Drilling technology for the No.2 grouting hole inJiexiu Xinyugou Coal Mine

摘要:

山西介休鑫峪沟煤矿2号地面定向水平多分支钻孔，是采用注浆技术封堵奥灰水导水补给通道的注浆钻孔，本孔实际完成总工作量2194.86 m，其中直孔段490.27 m，水平孔段累计1704.59 m。本文详细介绍了该注浆钻孔施工的主要设备、冲洗液及钻探施工技术，并对钻探施工中的难点和经验体会进行了总结，为同类工程施工提供借鉴。

Abstract:

The No. 2 multi-branch horizontal well drilled from surface in Jiexiu Xinyugou Coal Mine, Shanxi, is a grouting hole where grouting technology is used to block the supply and replenishment passage of the Ordovician karst water. The actual drilling amount of the hole is 2194.86m, of which the vertical section is 490.27m, and the horizontal section 1704.59m. This paper introduces in detail of the main equipment, drilling fluid and drilling technology of the grouting hole, etc., and summarizes the difficulties and experience in drilling, which can provide reference for similar engineering construction.