STUDY ON THE ENGINEERING GEOLOGICAL PROPERTIES OF THE DEEP SOILS IN JUYE MINE AREA OF SHANDONG PROVINCE AND IT'S SIGNIFICANCE TO THE SHAFT BUILDING

The basic information of the large type energy base of Juye mine area in Shandong province is presented. The geological strata and it's basic constitute characteristics are also introduced. Taking Longgu mine shaft as an example, the basic engineering geological properties of the deep soils are tested and analyzed, the clay mineral composition of the deep clay soils are tested quantitatively, the swelling properties are also tested and classified. The grain constitute and permeability of the sands are also tested. Imitating the characteristics of the deep strata stress state and unloading during the shaft excavation, the high pressure triaxial unloading testing are finished with the deep clay sample, which obtained the corresponding stress-strain curves and the strength parameters. The main engineering geological which probably arise during the shaft building through the thick over soils are analyzed. The researches have an important value for application to the design and construction of the shafts of Juye mine area.