砂卵砾石层倒垂孔施工技术

Construction Technology of Reversed Pendent Hole in Sand Gravel Stratum

摘要:

针对砂卵砾石层倒垂孔施工中钻孔偏斜、孔内坍塌掉块、取心以及保护管的安装等困难问题，从钻机安装、钻具结构、设备能力、钻进技术参数等多方面采取相应的技术措施，取得了良好的施工效果。介绍了红叶电站砂卵砾石层倒垂孔的施工技术。

Abstract:

According to the difficulties of borehole deviation, in-hole collapsing and block-falling, coring and installation in construction in sand gravel stratum, the corresponding technical measures were taken with good construction effect. The paper introduced the construction technology in sand gravel stratum of Hongye power station.