The invention relates to a method for delaminating complex layered dam foundation according to
lithology. According to
terrane data explored by drilling, the
terrane is classified and evaluated according to strength and
lithology, the values of the same level are distinguished, drilling depth is taken as the longitudinal coordinate, the
terrane value is taken as the abscissa, and all terranes are reflected on a drilling section layered graph by using the mode of a line chart; the layered graphs of all boreholes on any exploration line are analyzed, the similarity of the layered graphs of all boreholes is analyzed, and combined with attitude of
bed, the layering is obtained; distinct characteristics of adjacent
layers designate a geological boundary between
layers, and the geological boundary can intuitively
expose the
distribution rule of terranes with different strength of the complex layered dam foundation. The method sufficiently utilizes rich drilling exploration data, intuitively and vividly expresses
lithology difference in the boreholes from the aspect of rack strength difference, is beneficial to lithology layering under dam
foundation engineering geological conditions with different complexity, simultaneously is beneficial to communication between different specialized fields, and lays foundations for adopting correct and suitable dam foundation solidification
processing measures.