Design and Implementation WebGIS for Improving the Quality of Exploration Decisions at Sin-Quyen Copper Mine, Northern Vietnam

World Multidisciplinary Earth Sciences Symposium 2017

Truong, Xuan Quang^2 ; Truong, Xuan Luan^1 ; Nguyen, Tuan Anh^1 ; Nguyen, Dinh Tuan^1 ; Nguyen, Chi Cong^2

Hanoi University of Mining and Geology, 18 Pho Vien, Bac Tu Liem, Hanoi, Viet Nam^1

Hanoi Univeristy of Natural Resources and Environment, 41A Duong Phu Dien, Bac Tu Liem, Hanoi, Viet Nam^2

关键词: Design and implementations;    Design and implements;    Digital elevation model;    Inverse distance weighting;    Land use and land cover;    Management decision-making;    Open geospatial consortium;    Open-source technology;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/95/4/042048/pdf
DOI  :  10.1088/1755-1315/95/4/042048

来源: IOP

【 摘 要 】

The objective of this study is to design and implement a WebGIS Decision Support System (WDSS) for reducing uncertainty and supporting to improve the quality of exploration decisions in the Sin-Quyen copper mine, northern Vietnam. The main distinctive feature of the Sin-Quyen deposit is an unusual composition of ores. Computer and software applied to the exploration problem have had a significant impact on the exploration process over the past 25 years, but up until now, no online system has been undertaken. The system was completely built on open source technology and the Open Geospatial Consortium Web Services (OWS). The input data includes remote sensing (RS), Geographical Information System (GIS) and data from drillhole explorations, the drillhole exploration data sets were designed as a geodatabase and stored in PostgreSQL. The WDSS must be able to processed exploration data and support users to access 2-dimensional (2D) or 3-dimensional (3D) cross-sections and map of boreholles exploration data and drill holes. The interface was designed in order to interact with based maps (e.g., Digital Elevation Model, Google Map, OpenStreetMap) and thematic maps (e.g., land use and land cover, administrative map, drillholes exploration map), and to provide GIS functions (such as creating a new map, updating an existing map, querying and statistical charts). In addition, the system provides geological cross-sections of ore bodies based on Inverse Distance Weighting (IDW), nearest neighbour interpolation and Kriging methods (e.g., Simple Kriging, Ordinary Kriging, Indicator Kriging and CoKriging). The results based on data available indicate that the best estimation method (of 23 borehole exploration data sets) for estimating geological cross-sections of ore bodies in Sin-Quyen copper mine is Ordinary Kriging. The WDSS could provide useful information to improve drilling efficiency in mineral exploration and for management decision making.