Design and Realization of Automatic Mapping System for Borehole Data

Abstract

Drawing geologic maps (profile\plane\column map) are high-workload and low-accuracy task. Based on a series of research on previous study, system architecture, database and key algorithm, an auto-mapping system has been developed by interacting with MS SQL database, the framework of MAPGIS and visual programming tools. The actual-measured data in ZhiJiaDi district, Shanxi Province, China is chosen as a case study to demonstrate the validity and capability of the system. The test results compared with the manual-mapping one in GEMD method shows that the key algorithm are reliable, and this new system not only provide a user friendly interface, but also have the ability to satisfy requirement on the geologic maps with high accuracy, efficiency and conveniences.The geologic maps (profile\plane\column map) are the most basic forms of expression for the geological content, which play an important role in guidance of geological exploration, metallogenic prediction and decision-making [1]. In China, various maps are manually drawn in MAPGIS platform according to the paper map provided by the geologists, which results in large workload, complicated process and inaccuracy. It seriously affects the quality of work for computing of resources amount, metallogenic prediction and mine design, etc. Therefore, research on a new automatic mapping system which is convenient, efficient and accurate becomes the urgent need for domestic mineral system.

Research on vector road data matching method based on flat curve

“…Then, the principle of polar coordinate system is utilized for point location matching. Finally, the roads are decomposed into three types of primitive line elements and matched using curvature to improve the matching accuracy [5][6][7] . This method can realize the rapid real-time update of geographic information spatial database [8] .…”