To study the effect of liquid cooling, including acid cooling and water cooling, on the microscopic characteristics of high-temperature granite, scanning electron microscopy and energy spectroscopy analysis tests (SEM-EDS) as well as mercury injection experiments were carried out on liquid-cooled granite. The SEM-EDS results show that the elemental composition is barely affected by water cooling, while acid cooling causes reductions in O, Si, and metallic elements. The pores and cracks were observed in both cases. Moreover, a more non-flat, loose, and rough surface is created under acid cooling conditions compared to water cooling. Mercury injection tests show an increase in porosity, pore volume, and specific surface area in liquid-cooled granite samples, while their fractal dimensions show an opposite trend. Acid cooling leads to significantly greater property changes than water cooling, owing to the dissolution effects of mud acid. The results demonstrate that the acid cooling process results in greater capacity of pore generation and expansion, as well as lower pore structure complexity, compared to water cooling.

为了研究液体冷却（包括酸冷却和水冷却）对高温花岗岩微观特征的影响，对液体进行了扫描电子显微镜和能谱分析测试（SEM-EDS）以及压汞实验。冷却花岗岩。 SEM-EDS结果表明，元素组成几乎不受水冷影响，而酸冷会导致O、Si和金属元素的减少。在两种情况下均观察到气孔和裂纹。此外，与水冷相比，在酸冷却条件下会产生更加不平坦、疏松和粗糙的表面。压汞测试显示液冷花岗岩样品的孔隙率、孔体积和比表面积增加，而其分形维数则呈现相反的趋势。由于土酸的溶解作用，酸冷却导致的性能变化明显大于水冷却。结果表明，与水冷却相比，酸冷却过程具有更大的孔隙生成和扩张能力，以及更低的孔隙结构复杂性。