Research on Digital Photographic Geological Logging Technology of Coal Mining Face

In view of the problems in efficiency and accuracy of manual geological logging approaches for coal mining face, this paper proposed a digital photograp hic geological logging method based on close range photogrammetry. This method took images of the mining face rapidly by a photographic apparatus of special desig n. During data processing, section calculation, image distortion correction and mosaic, display image measurement, occurrence calculation and attribute description wer e implemented;therefore, the construction geological logging method was converted from manual work to computer-aided work and information management. The applic ation indicated that the method proposed by this paper had highly improved the efficiency, integrity and accuracy of geological logging of coal mining face, as well as th e management automation level in contrast with manual approaches.