Abstract: Close-range photogrammetry method is applied to monitor the dry beach of mine tailing pond.The dry beach online monitoring system includes some control points,two network cameras and devices of communication,power supply and display.The stereo images are matched by extracting and identifying the line and surface-based features of stereo images by means of software.According to the features extracting and images matching results,the targets of stereo images are measured and positioned automatically to obtain the the parameters of dry beach. Combined with practical application,the measurement data are processed and measurement accuracy are analyzed.The research results show that,close-range photogrammetry method has a good prospect in monitoring dry beach of tailings.

Key words: Close-range Photogrammetry, Dry beach monitoring, Automatic measuring and positioning, Accuracy analysis