Vertical accuracy of data on the topographic maps and their application in mining

Abstract

The paper describes some experiences and the methodology used for evaluation the vertical accuracy of data on the official (state) topographic maps. The vertical accuracy is an important element of quality 3D representation on the topographic maps in digital, as well as in analoguos forms. A comparative way of testing is usually applied for determining the vertical accuracy, namely the comparison of the measured values of topographic maps with "true" or "conditionally true" values (numeric data of the geodetic and height points). This method gives a direct accuracy assessment of the printed maps and 3D terrain models, especially when used in industries such as mining. To a large extent, the vertical accuracy of data and geomorphology (geographic) fidelity relief on the topographic maps is not always sufficient quality. The type of survey and how the matter affects the quality, or the geodetic control points are drawn precisely, where the accuracy of the contour lines is lower. However, the application of a new technology is changes the 3D visualization of terrain, thus increasing the vertical accuracy of data.

Software solution for the mine subsidence prediction based on the stochastic method integrated with the GIS

“…Integrative modeling, interac tive spatial analysis and understanding different processes are supported by the GIS. Based on the simulation of spatially distributed and time-dependent subsidence processes, innovative thematic maps containing the land-surface properties can be designed [7][8][9][10][11].…”

“…In the case that 0   ,the formula ( 12) is reduced to the basic formula (10) for calculating the subsidence of horizontal seam.…”

“…GIS is used for creatinh complex geodatabase, converting numerical data, imported from the SUBSIDENCE and DEFOR-MATIONS modules, in feature classes and graphical data as well as for performing the spatial analyses of subsidence and deformations [7][8][9][10][11]. Since the pit consists of multiple panels with complex geometry, spatial analyses requires a long time without GIS because for each panel subsidence or deformations must be presented cumulatively.…”