Method for investigating engineering geological conditions

The invention discloses a method for investigating engineering geological conditions. The method comprises the following steps: 1 investigating landforms; 2 surveying the geological structure, wherein the geological structure comprises the wrinkle influence of a wrinkle area of a surveying area and the fracture condition of the surveying area; 3 carrying out site stratum lithology and distribution; 4 geophysical background investigation: performing field survey according to early-stage engineering survey data; and 5 carrying out geophysical characteristic research, because the electrical characteristics of the rock-soil body are closely related to lithology, mineral components and humidity, and the high-density resistivity method is greatly influenced by the topographic change of a tested area in the test. According to the method, the thickness of the quaternary system covering layer, the fluctuating form of the bedrock surface and the weathering boundary line in the exploration range are preliminarily found