Spaceborne-airborne-ground collaborated intelligent monitoring on open-pit slope and its typical applications

Surface mining is one of the major methods of mineral resource development in China. The long-term and high intensity development of surface mine has brought with a lot of slopes with high angle and great depth,which leads to serious instability issues and large landslides. To monitor the surface mine slopes effectively and to forecast the landslides are the keys of slope treatment,safe production and green mine development. However,the large surface mines usually have complex terrain,difficult observation conditions and multiple impacting factors,which make the tra- ditional and single observation method to be less effective. Based on discussing some conceptions related with intelli- gent monitoring,this paper introduces the idea, contents and connotation of intelligent monitoring on surface mine slope. The core of intelligent monitoring on surface mine slope is spaceborne-airborne-ground collaborated observations with multiple platforms and multiple modes,which include temporal coordination,spatial coordination,parametric coor- dination and intelligent analysis. Seven key technologies for the intelligent monitoring on surface mine slope are intro- duced,which are GNSS online monitoring,D-InSAR of radar satellite,high-resolution imaging of optical satellite,joint observation of unmanned aerial vehicle and terrestrial laser scanner,ground-based thermal imaging,surveying robot re- ferring to atmospheric refraction,and the WiFi-based multi-end display of monitoring information. These means not on- ly emphasize the advancement,robustness and accuracy of monitoring instruments,but also play the complementary and process coordination of multiple means. The stable and reliable communication network,fast and automatic data processing and intelligent integrated analysis module are the keys to realize the intelligent monitoring and intelligent e- mergency management of mine slope landslide. Finally,three typical application cases in Liaoning Province are intro- duced,which are the large-scale landslide in Fushun West Surface Mine,the large waste rock pile of the Anqian Iron Mine of AnSteel Group,and the landslide of the Gongchangling Iron Mine of AnSteel Group. The particular monitoring measures referring to the mine’s features and special demands. Following that,the practical effect reached are also in- terpreted.