CAJ | 학술논문

为研究建腔周期对储气库穴壁围岩的损伤演化的影响，结合工程实际，以不同速率下的三轴围压卸载试验为基础，建立扩容与损伤关系模型，并用速率补偿因子对公式进行修正。研究结果表明：(1)在一定条件下，盐岩的扩容可以直观反映其当时状态下的损伤状况；(2)试验中同样的应力路径下，围压卸载速率的增加可以使盐岩的扩容幅度减小，使加速扩容点后移，岩盐的损伤较小；(3)在同一应力条件下，不同的围压卸载速率对损伤的影响表现为速率的对数值与损伤值呈线性关系。
위연구건강주기대저기고혈벽위암적손상연화적영향，결합공정실제，이불동속솔하적삼축위압사재시험위기출，건립확용여손상관계모형，병용속솔보상인자대공식진행수정。연구결과표명：(1)재일정조건하，염암적확용가이직관반영기당시상태하적손상상황；(2)시험중동양적응력로경하，위압사재속솔적증가가이사염암적확용폭도감소，사가속확용점후이，암염적손상교소；(3)재동일응력조건하，불동적위압사재속솔대손상적영향표현위속솔적대수치여손상치정선성관계。
For researching the influence of build-cavity-period on the damage of gas storage library′s surrounding rock,combining with the engineering practice,the triaxial unloading confining pressure experiments under different unloading rates are carried out;and the dilatation-damage model and corrects the formula with correction factor of rate are built. The results show that:(1) Under given conditions,salt rock can intuitively response the damage situation at that time. (2) In the experiments,if salt rock specimens experience the same stress path, increasing unloading rate can make the rock of the dilatation amplitude decrease,speed-up-dilatation point lag,the salt rock damage become lesser. So,the damage control more easily. (3) In the same stress condition,we find that different unloading rates will impact the damage of salt rock. The negative logarithm of rate and damage are linearly correlated.