To solve this problem we developed a high negative pressure and confining pressure-free perforating process.
Dynamic mechanical properties of concrete materials subjected to passive confining pressure produced by a steel sleeve
The effect of unloading confining pressure on cohesion is more obvious than that of angle of internal friction.
Research on the effect of the influence of confining pressure on EME during the deformation and fracture of coal or rock mono-axial compressed
The calculation result is safer by considering the improvement of rock rigidity under confining pressure, but the improvement can not make up the loss of rock rigidity caused by immersion.
Unloading deformation failure and energy properties of marble under high confining pressure and high water pressure
The number on the curves are the values of the confining pressure in atmosphere.
When DTH drilling in high confining pressure, its border condition has changed. So new software need to be developed.
Study shows that there is normalization characteristic about the stress-strain curves of mediate-dense sands in the range of routine confining pressure.
Unloading strength properties of rocks under high confining pressure and hydraulic pressure
The test results show that the relative breakage is correlative to the particle strength and confining pressure.
Regional metamorphism is a type of rock alteration that is a really extensive and occurs under the conditions of great confining pressures and heat accompanying deep burial and mountain building. Therefore, it is also called dynamothermal metamorphism.
Influence of weak interbedding on stability and safety of underground in different confining pressure environment
The simulated results show that there are four kinds of breaking patterns of rock which are related to the confining pressures and cutter spacings under the action of TBM cutters.
The dynamical stress produced by superposition or interference of reflected stress wave makes confining pressure reduce and change at low values.
Experimental study on the dynamic biaxial compressive properties of concrete under constant confining pressure
The influence of crack angle and confining pressure condition on the additional lateral deformation of rock was discussed.
