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The research reveals that during selection of a method to increase oil recovery it is necessary to take into account rheological features of fluid movement through the formation, effect of capillary forces and heterogeneity of reservoir properties of the productive formation in thickness and along the bedding. Low-frequency wave impact, which is used to increase production in oil fields, is considered. At low-frequency impact new fractures appear and existing fractures in rocks increase in size. The greatest increase in porosity and permeability of rocks occurs at an impact frequency up to 10 Hz. Dynamics of oscillation amplitude during wave's movement in saturated porous medium is studied in the paper: essential attenuation of amplitude occurs at distance up to 1 m from borehole axis. With increase of frequency from 1 to 10 Hz the intensity of amplitude's attenuation decreases. The technology was tested on a well in Perm region (Russia). The actual permeability value was 50 % higher than the predicted value. According to the results of hydrodynamic investigations processing, it was noted that the greatest increase of permeability took place near the wellbore, while away from the wellbore axis permeability remained almost unchanged. In order to refine the mathematical model for prediction of wave impact on rock permeability it is necessary to take into account interconnection of pore space structure, change of adhesion layer, as well as to study transfer of particles during vibration.

Underground engineering generally needs to pass through a significant number of geological structure areas, which can easily induce fault-slip rockburst, threatening the engineering structure's stability.For revealing the mechanism of disaster causing of fault-slip rockburst, the geological structural conditions, spatiotemporal inoculation characteristics, disturbance triggering mechanism, risk assessment indicators and the early warning methods of fault-slip rockburst was systematically analyzed in this study.The results show that fault-slip rockburst mostly occurs in the geological structure area which containing the weak structural plane or bedding plane, and the hard structural surface controls the rockburst crater boundary.The fault-slip rockburst has typical spatiotemporal precursor characteristics.As a matter of fact, the acoustic emission (microseismic) monitoring parameters have a typical precursor of a "relatively quiet period" in the critical failure stage, and the infrared thermal image temperature will appear the phenomenon of short-term abnormality.The natural defect structure provides geological structure conditions for the occurrence of fault-slip rockburst, roadway tunneling provides a slip space for fault-slip rockburst, and the dynamic stress provides disturbance triggering conditions for triggering fault-slip rockburst.