在岩心机械钻探工程施工中,因受地质、机械等条件的影响,钻孔终孔方位在不同程度上均或多或少偏离勘探线设计原定位置,随钻孔的延深而发生倾角、方位角的变化,造成钻孔弯曲,影响勘探质量,严重的甚至造成工程报废,给国家造成大的损失。因此,现代钻探技术要求防斜、 In the construction of core drilling engineering, due to the influence of geology, machinery and other conditions, the final hole orientation of drilling bore holes deviated more or less to the original design of exploration line to some extent or more, Azimuth changes, resulting in drilling bending, affecting the quality of exploration, serious or even scrapped the project, causing great losses to the country. Therefore, modern drilling technology requires anti-inclined,