摘要
工程地质和水文地质勘察是为工程设计提供翔实的地质资料,对建设工程项目技术经济分析、设计和施工有重大意义。水平孔超前地质预报是源于垂直勘探孔的一种新技术,是在垂直方向的基础上向水平方向的扩展和延伸。在巴基斯坦N-J水电站地下厂房项目施工中,利用普通轻型地质钻机、压水灌浆设备等,成功实施了直径76 mm、深度达280 m的水平勘探孔,不仅为该工程提供了准确的工程地质资料,同时也拓展了小口径长距离水平勘探孔超前地质预报技术的应用,并且积累了经验。
The advanced geological forecast by exploratory adit, an extension from vertical plane to horizontal plane, is devel-oped from the traditional vertical exploration borehole techniques. In the underground powerhouse construction of Neelum-Jhe-lum Hydropower Station in Pakistan, the horizontal exploring adit with a diameter of 76mm and a length of 280m was successfully drilled by normal light geological drills and high pressure grouting equipments, which not only provided accurate geological data for the engineers, but also expanded the application of horizontal exploration adit in the advanced geological forecast. We de-scribe the construction techniques of horizontal exploration adit with small diameter and long distance as well as the advanced geo-logical probing conclusions.
出处
《人民长江》
北大核心
2014年第4期24-26,31,共4页
Yangtze River
关键词
超前预报
地质取芯
压水试验
原位试验
小口径长距离水平钻孔
advanced geological adit
geological core drilling
water pressure test
in-situ test
horizontal exploration adit with small diameter and long distance
