The geologic condition of the bearing layer was probed with GPR to ensure the safety and high quality of pile foundation construction.

Combined with foundation pit supporting engineering of coal transport system in one power plant the geological conditions of underground passageway are discussed.

It introduces the red clay,points out the red clay foundation is one good foundation in the civil construction project,and brings forward the corresponding measures solving the problems in the geological conditions of crack,ground burrow and clint in the red clay foundation projects,which will supply reference to the red clay foundation projects.

Discussion was made with engineering cases on how to choose pile-driving machine in large diameter bored cast-in-place pile construction in different geological conditions,so as to increase construction efficiency.

Based on the geologic aspects of Dingbian Small Oil Fields, this paper introduces the developmental condition of the stratum and the oil bearing formation, and probes into the cognition of comprehensive conditions of oil bearing formation.