Sanmiquel, L.; Bascompta, M.; Solorzano, A.; Parcerisa, D.; Anticoi, H.; Guasch, E. International Conference on Gis and Remote Sensing p. 38- DOI: 10.4172/2469-4134-C1-009 Data de presentació: 2017-10-02 Presentació treball a congrés
The purpose of the study is to apply SAR interferometry for the mining activity in the Catalan basin and compare the outcomes with high precision Global Position System (GPS) data, with the idea to verify the suitability of the system to control mining subsidence in a zone where potash is exploited by means of a room and pillar method in a depth between 500-1000 meters below the surface. The satellite images used are obtained by the Sentinel-1 and then processed by software, developed by the Polytechnic University of Catalonia, called SUBSIDENCE-GUI, which was created to control mining subsidence. On the other hand, UTM coordinates of 200 control points measured between 2014-2016 by GPS are gathered to compare the outcomes of
the software. The procedure used is as follows: processing the images upward and downward separately. Subsequently, either the linear deformation velocity or the nonlinear is estimated, obtaining the overall deformation. The comparison between SAR and GPS results has been done in the three spatial directions, having the SAR technology a divergence in the control points within the accuracy of the GPS in all the directions.
Bascompta, M.; Solorzano, A.; Sanmiquel, L.; Oliva, J.; Guasch, E. World Congress on Mechanical, Chemical, and Material Engineering p. 134-1 DOI: 10.11159/mmme17.134 Data de presentació: 2017-06-08 Presentació treball a congrés
One of the more dangerous hazards in an underground mine is the generation of a fire due to the potential consequences to the miners. A mine fire can occur at any time, producing partial or total evacuation of mine workers. Therefore, it is crucial to determine the behaviour of the fires depending on the source fuel and the characteristics of the mine. Early detection, warning systems and preparedness are very important in this regard.
This study tries to deal with the preparedness of miners. The emergency plan has been evaluated using the software VentSim to validate the adequacy of the plan, find out weaknesses of the current system and possible alternatives. The most effective evacuation routes in terms of distance to the safe zone have been determined as well as the location of the rescue facilities inside the mine.
Sanmiquel, L.; Solorzano, A.; Bascompta, M.; Rossell, Josep M.; Oliva, J.; Anticoi, H. World Congress on Mechanical, Chemical, and Material Engineering p. 140 DOI: 10.11159/mmme17.140 Data de presentació: 2017-06-08 Presentació treball a congrés
The InSAR technology has already been applied in ground movements, demonstrating its suitability for such purpose and managing huge quantities of data. The purpose of the study is to apply the SAR interferometry in a mining area and compare the outcomes with high precision data from Global Position System (GPS).
Thirteen satellite images have been processed for such purpose, covering a time range of five years (from 2007 to 2011), with the goal to know the subsidence during this period. The specific surface features of the zone have been taken into account. GPS data has also been processed and compared, obtaining the subsidence movement in the three directions and the mean subsidence velocity per year.
The comparison between both methods show similar results in terms of subsidence generated by the underground activity, validating the suitability of InSAR by means of GPS data. However, the existence of GPS measures is crucial to calibrate and keep the necessary accuracy of the system.