Tóm tắt:

WebGlS technology in the r.ianagement of digitai map data ìs increasing. This paper presents the design and deveiopment of a WebGIS applicalion to provide Online iníormation on geospatial data and related iníormation, supporting the management of digital map data. By combining advanced techniques in VVebGIS to provide full íunctionality and iools for interacting with database systems, decision support, analysis, automated reporting of intormaíion and data as well as maps of copper mine. 9 ' . * Lựn CHỌN PHƯƠNG PHÁP... (Tiếp theo trang 99) t Ngày nhận phản biện: 26/06/2018 Ngày chấp nhận đăng bài: 10/08/2018 Từ khóa: tính trữ lượng, tài nguyên, thiếp- Northeastern area of Vietnam has a large potentíal of tin-tungsten resources. Hovvever, investigation of specialized research ỉn assessment of resources and economic value of the tin-tungsten and associated minerals is stili limited. To have a scientitic basis for planning, investỉgating, exploitìng and using tin-tungsten minerals in a rational and effective manner, the study and selected methods for determining the minimum industrial content and calculating reserves/resources suitable for each type of tin-tungsten origin is very necessary in the study area. Based on synthetic documents írorri the previous sources, combining the results of the implementatíon of step 1 of the scientitic and technobgical project Studying and assessment of resources and economic vaiue of some polymetallic mines, tin-tungsten in Northeastern Vietnam serves the goal of sustainable development”, the author analyzes and selects the method of determining the industrial index for tin-tungsten mines and accompanied useíul minerals. Cortcurrent research on the methodology used to calculate the tin-tungsten reserves and useíul elements. This paper tocuses on the basic issues of methodology for deíining the minirnum industrial content indexes and methods of calculating reserves and íorecasts of tin-tungsten resources in Northeasterri Vietnam and the acGompanied usetul components. The proposed methods should be íeasible, suitable to the econornic and technical conditions of our country and ensure the requirements of regional and world in