The seepage law of rock fractures is developed in combination with sand property. The relationships among shear displacement,aperture and flow are discussed. It is proposed that the little distrubance of sand structure and the aperture change are primary affecting factors on fracture flow.
3 、 Discusses the deformation properties of rock fracture under normal stress, lateral stress and water pressure respectively. Combining with seepage characteristic of rock fractures, develops the theory formulations of deformation and seepage of a single rock fracture under stresses.
Taking the water sealed underground storage cavern in Huangdao as an example, the pa- per introduces the principle for the treatment of rock fractures and the new method for the prediction of water level trend, which are set up based on research on the characteristics of the fratured water, and which are superior to foreign correspondents.
Based on theories of subwave analysis and fuzzy recognization, causes for generation of stripe noise are analysed, and an effective calculating model to pick up stripe noise background is established. Therefore, interferences of vertical shadow bands on borehole wall can be eliminated in fracture recognization, resulting in automatic identification and more accurate quantification of rock fractures.