Powerful, versatile, and well supported, its earned a following second to.Underground rock is often subjected to the coupled action of acid sulfate, chloride ion corrosion, and external dynamic disturbance: the degree of corrosion and dynamic load can significantly affect the pore structure and mechanical behavior of rock. To quantify the microscopic pore structure changes and macro-dynamic behavior characteristics of acidified corroded sandstone, first, a mixed acidic solution of NaHSO 4 and HCl with different pH values was used for immersion corrosion of sandstone second, the pore structure of sandstone before and after corrosion was quantitatively evaluated by nuclear magnetic resonance (NMR), dynamic loading tests of corroded sandstone were conducted on an SHPB experimental system and scanning electron microscopy (SEM) was used to observe the morphology of corroded sandstone section and finally, the mechanism of water–rock interaction and damage and fracture of acid-corroded sandstone were analyzed. Number of effective pores, and the total porosity increase significantly the residual porosity, the number of residual pores, and T 2 cut-off value decrease. The results show that, after acidizing corrosion of sandstone, the macropores increase significantly in number and volume, the boundary of the pore structure tends to be fuzzy the effective porosity, the ![]() Mdi Jade 9 Crack By ciouraskesa1973 Follow | Public
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