一、前言在勘探工作中,地下岩(矿)层产状确定得正确与否,将直接影响到矿区构造的认识和对矿体形态的预测以及矿体边界线圈定的正确性。随之而来,又会影响储量计算的精度和进一步的勘探设计与矿床开采。因此,正确确定地下岩(矿)层的产状,是一个非常重要的问题。当采用岩心钻进行勘探时,由于钻孔内所取岩心被钻进和提钻过程多次转动,无从在单 I. Preface In the exploration work, the determination of the formation of the underground rock (mine) layer is correct or not, which will directly affect the cognition of the mining area structure and the prediction of the ore body morphology as well as the correctness of the ore body boundary line delineation. This, in turn, will affect the accuracy of reserves calculations and further exploration design and deposit mining. Therefore, it is a very important issue to correctly determine the occurrence of the underground rock (mine) layer. When core drilling is used for exploration, since the core taken in the borehole is rotated many times during drilling and drilling,