New opportunities and challenges in surveying underground cavities using photogrammetric methods  

作　　者：Malte J.M.Gurgel Axel Preusse 

机构地区：[1]Institute for Mine Surveying,Mining Subsidence Engineering and Geophysics in Mining,RWTH Aachen University,Aachen 52062,Germany

出　　处：《International Journal of Mining Science and Technology》2021年第1期9-13,共5页矿业科学技术学报（英文版）

基　　金：The outlined research agenda is based on the results of a master thesis.The authors would like to thank Dr Ralf Schulte for his assistance and supervision during this thesis.It was completed at the Institute for Mine Surveying,Mining Subsidence Engineering und Geophysics in Mining in September 2019.The proposed doctoral project is funded by the Friedrich Naumann Foundation for Freedom with funds supplied by the German Federal Ministry of Education and Research.

摘　　要：The exploitation of the underground is currently undergoing a major transformation process.Besides mining,alternative ways of utilization are playing an increasingly important role.These alternative utilizations include the storage of gases,the disposal of radioactive wastes,and the implementation of geothermal storage facilities.In addition,more and more mining operations are being shut down,like the German hard coal mining industry in 2018.But the integrity of closed mines must be ensured in the post-mining phase.In order to capture such large and complex structures efficiently and reliably,new surveying techniques are required.A promising approach is the use of photogrammetric methods to generate three-dimensional models of the cavity.Photogrammetry is currently known mainly from aerial photography.It is conceivable to use such methods for underground applications.In recent years,significant progress has been made in the algorithm-based orientation of unstructured image sets.More powerful computer systems and the growing range of unmanned aerial vehicles could enable partially automated capture.However,a number of problems have to be solved for underground imaging techniques.Unfavorable exposure conditions complicate image alignment.Furthermore,the models must be integrated into existing surveying systems with a sufficiently high degree of accuracy.In order to consider the numerous technical aspects,the development of an integrated capture and evaluation approach is necessary.This could make an important contribution to the monitoring of critical cavities of different commodities.Such an approach would also fit into the current digitization trend in the mining industry and provide new opportunities for ground control in particular.

关 键 词：PHOTOGRAMMETRY SURVEYING Subsurface spatial planning 

分 类 号：TD175.7[矿业工程—矿山地质测量]