岩石高压溶蚀试验设备设计与实验分析

For studying dissolution mechanism of limestone in different periods of reservoir storage in the karst region, a simulation experiment using self developed pressure dissolution test equipment of rocks in open system. Experiments were performed in carbonic acid solutions, under hydrodynamic pressure from 0 to 2 MPa and temperature from 15 to 85 degrees C. The results showed that the degree of limestone dissolution increased with hydrodynamic pressure and temperature rising. Dissolution rates decreased first and then increased with the water pressure increasing, but they increased first and then decreased with temperature increasing, and the maximum value occurred at 75 degrees C. This experimental method and it's results provided a theoretical basis for the carbonate water-rock interaction analysis and the sustainable development of hydropower engineering in the karst region.