CAJ | 학술논문

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。
공정지질화수문지질감찰시위공정설계제공상실적지질자료，대건설공정항목기술경제분석、설계화시공유중대의의。수평공초전지질예보시원우수직감탐공적일충신기술，시재수직방향적기출상향수평방향적확전화연신。재파기사탄N-J수전참지하엄방항목시공중，이용보통경형지질찬궤、압수관장설비등，성공실시료직경76 mm、심도체280 m적수평감탐공，불부위해공정제공료준학적공정지질자료，동시야탁전료소구경장거리수평감탐공초전지질예보기술적응용，병차적루료경험。
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.