三山岛北部海域近海地质钻探的定位方法及质量控制

Positioning Method and Quality Control of Sea Offshore Geological Drilling in Northern Sanshandao Area

三山岛北部海域近海地质勘探工程由传统的陆地固体矿产找矿转到近海海域找矿,拓展了找矿空间,取得了找矿突破。地质钻探工程作为海域地质勘探的主要工作手段决定着整个海上勘探工程的成败,保证海上钻探定位的精度是勘探工程的基础性工作。地质测量人员采用基于山东SDCORS的网络RTK技术进行地质钻探的定位工作,同传统测量方法相比较,CORS-RTK定位技术有海上定位精度高、数据质量可靠、测量速度快、海上作业距离长等优势。

Sea offshore geological exploration engineering in northern Sanshandao area has transferred from traditional terrestrial solid mineral prospecting to offshore prospecting. It has expanded the prospecting space and made a breakthrough in prospecting. As the main means of geological exploration work of offshore exploration decides the success or failure of geological drilling engineering project. Ensuring the offshore drilling positioning accuracy is the basis in exploration engineering work. By using geological drilling technology of RTK network based on SDCORS in Shandong province, positioning work has been carried out by geological survey personnels. Comparing with traditional measurement method, CORS -RTK posi- tioning technology has the advantages of high positioning accuracy, reliabledata quality, fast measuring speed, long distance and other advantages in offshore drilling.