水平定向钻探与综合测试技术研究及应用

Research and application of horizontal directional drilling and comprehensive testing technology

西部重大工程建设勘查面临“地形险峻、陡倾构造、生态脆弱”等恶劣的环境条件,采用竖向钻探无法实施,采集的地质信息不全,水平定向钻探和综合测试技术是解决重大工程长大深埋隧道勘察难题的关键技术。但超长水平绳索取心钻进存在陡倾构造地层多变轨迹控制难、高寒缺氧地层破碎钻机动力不足及生态环境保护要求高等问题。本文介绍了系列化水平定向取心钻探装备、多参数全方位无缆测井系统和水平绳索随钻轨迹控制等技术装备的研发进展,以及成功在川藏铁路及引大济岷工程中的应用,在西部高原地区起到示范与推广作用。

The exploration of major engineering construction in the west is faced with harsh environmental conditions such as“steep terrain,steep structure and fragile ecology”.The geological information that cannot be implemented and collected by vertical drilling is incomplete.Horizontal directional drilling and comprehensive testing technology are key technologies to solve the exploration problems of large and deep buried tunnels in major projects.However,there are difficulties in controlling the variable trajectories of steeply dipping formations,insufficient power for drilling machines in high cold and hypoxic formations,and high ecological and environmental requirements in ultra long horizontal rope coring drilling.This article introduces the development of a series of horizontal directional coring drilling equipment,a multi‑parameter all‑round wireless logging system,and horizontal rope drilling trajectory control technology and equipment,which have been successfully applied in the Sichuan Tibet Railway and the Water Diversion Project from Daduhe to Minjiang river,Play a demonstration and promotion role in the western plateau area.