DRAGLINE PRODUCTIVITY MONITORING USING THERMAL PHOTOGRAPHY AND LASER SCANNING IN SHEET DEPOSIT MINING IN PERMAFROST ZONE
The results of the use of thermal imaging surveys and laser scanning systems for performance monitoring in field conditions dragline permafrost zone. Analysis of the infrared images showed that a negative temperature in the surface layer of the bottom of the dragline recorded throughout the season stripping operations. At the same time, given the increasing air temperatures, insolation, the average temperature in the area of reference works at the bottom of the rise. Noted, that the thermal imager well diagnosed zone alternating temperatures in the mine excavator, and also areas of high humidity rocks. Found that the temperature according to the comparability of thermography data pyrometric measurements can be high for distances up to 10-15m, and has a large range of values for distances of several tens of meters. It is shown that the application of thermal imaging surveys and terrestrial laser scanning can significantly improve the accuracy and reliability of field research in the study of refreezing process blasted overburden at open fields under the area of permafrost.