本研究擬對花崗岩、大理岩、砂岩進行熱傳導試驗及熱膨脹試驗以了解脆性岩石的基本熱學性質，另外對岩石經歷常溫、及加溫至400℃、800℃後冷卻至常溫之力學性質進行了解，分析溫度作用對岩石尖峰應力、彈性模數、泊松比及應力應變曲線變化狀況。由研究結果發現三種岩石中熱傳導係數以大理岩最高，花崗岩次之，砂岩為最低，研判礦物成分及孔隙率為重要影響因素。熱膨脹試驗結果顯示岩石熱膨脹係數會有隨溫度上升而增加的趨勢，反應其受高溫後內部結構將發生變化。高溫後基本力學試驗結果顯示岩石的尖峰應力、彈性模數及泊松比將隨溫度的提高而有降低的趨勢，尖峰應變則隨溫度升高而增加。這些結果也反應了岩石受溫度影響之基本規律。

This study aims to investigate the thermal and mechanical properties of several rocks. Three types of rocks including granite,marble and sandstone were heated at different elevated temperature for two hours and were cooled to room temperature. Then the themal and uniaxial compression tests were performed on these samples. The thermal conductivity and thermal expansion were obtained. The uniaxial strength, elastic modulus, and Poisson’s ratio under different elevated temperature were determined. The experimental results show that the thermal conductivity of marble is of the highest value while the thermal conductivity of sandstone is the lowest. The effect may be attributed to the mineral composition and porosity. This study finds that the thermal expansions of rock samples increase with increasing temperature while the uniaxial strength, elastic modulus and Poisson’s ratio decrease with increasing temperature. This study demonstrates that the fundamental aspects of rocks behaves under thermal effect.

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