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该文介绍了通过中小型水平定向钻钻探工艺,解决了徐州轨道交通徐州站无法施工垂直钻探孔的工程勘察难题。水平定向钻重点解决了长距离水平钻孔施工、孔壁维护、岩性判别等难题;通过水平井内测井技术很好地解译了孔内1.0m环空内的地层情况、岩溶发育情况等,达到了工程地质勘察的目的。该文对类似工程具有一定的借鉴意义。
This paper introduces the exploration project of small and medium sized horizontal directional drilling to solve the engineering investigation problem that Xuzhou Railway Xuzhou Railway Station can not construct vertical drilling holes. Horizontal directional drilling focused on solving the long-distance horizontal drilling construction, hole wall maintenance, lithology discrimination and other problems; through well logging technology well within the hole 1.0m annulus within the stratum conditions, karst development and so on , To achieve the purpose of engineering geological survey. This article has some reference to similar projects.