ABSTRACT
For this situation, some scholars have proposed the use of rock complete stress-strain process permeation test method to establish permeability-strain coupling between research ideas. Currently, many domestic and foreign scholars and engineers working on the rock permeability law, has made certain achievements in theoretical research and engineering experience in the prevention of coal floor water bursting rock played an important role in guiding. However, for Chenghe mining area to carry out the mining rock stress field coupling analysis of seepage field is still in its infancy. Therefore, I have the necessary samples collected on-site laboratory tests carried out, the different mechanical properties of rock samples to carry out the complete stress-strain experimental study of permeability, as reflected by the test stress-strain and permeability-strain relationship characteristics,
rock mechanics test system MTS completed. For a complete, dense rock samples to obtain the stressstrain process and change the permeability of the confining pressure transient permeation method requires the use of simulated rock underground mining process in the whole stress-strain during the change of permeability coefficient. MTS hydraulic servo rock mechanics test system, the more complete, both uniaxial and triaxial general test, but also the completion of pore water pressure and water penetration test. The basic principle of test chart shown in Figure 1. Figure of P1 for axial pressure; The P2 as confining pressure; P3 for specimen top water pressure; P4 for specimen bottom water pressure; ΔP as the pressure difference on both ends (ΔP = P3−P4).
