The change laws of heat swelling power and porosity of sandstone and limestone were researched at different temperatures using a heat swelling power experimental system and a porosity test apparatus.

• 采用热膨胀力测试系统和孔隙测定装置研究了不同温度条件下砂岩和石灰岩的热膨胀力和孔隙率的变化规律。