Strength and deformation characteristics of rocks after undergoing thermal hysteresis of high and low temperatures

• Published in: International journal of rock mechanics and mining sciences (Oxford, England : 1997) Vol. 34; no. 3-4; pp. 140.e1 - 140.e14
• Main Authors: Inada, Yoshinori, Kinoshita, Naoki, Ebisawa, Akira, Gomi, Shinji
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.1997
• Subjects: Compressive Strength; Deformation; High Temperatures; Low Temperatures; Strain; Tensile Strength; Thermal Hysteresis; Compressive Strength; Tensile Strength; Deformation; Thermal Hysteresis; High Temperatures; Low Temperatures; Strain
• ISSN: 1365-1609; 1873-4545
• DOI: 10.1016/S1365-1609(97)00048-8

The authors have proposed and discussed temporary storage of high and low temperature materials in openings excavated in rock mountain from the view point of efficient utilization of land and preservation of the environment. In this case, high temperature materials means such as heated water which is produced by surplus heat from garbage burning plants, and low temperature materials means such as LNG, LPG, frozen food etc. When heated water, LNG and LPG actually are stored in openings, as the quantity of these materials changes continually, the rock mass around openings will receive the effects of thermal hysteresis of high and low temperatures. Therefore, obtaining the strength and deformation characteristics of rock after undergoing thermal hysteresis of high and low temperatures becomes important for discussing the stability of the openings. In this study, strength and deformation characteristics of rock which has low and high porosity were examined after undergoing thermal hysteresis of high and low temperatures using a thermal cycle apparatus. From the results, it was found that temperature, the number of hysteresis and porosity etc. were important factors which have an influence on strength and deformation characteristics.