CAJ | 학술논문

岩石损伤过程热-流-力(THM)耦合问题的研究对于深部采矿等许多工程领域都具有重要的理论意义.以岩石的损伤为主线,在多场耦合分析方程中引入损伤变量,基于质量守恒和能量守恒原理,提出岩体损伤过程中的THM耦合模型.通过把均匀弹性介质THM耦合响应的模拟结果与理论分析结果进行对比,验证了程序及有限元实施的正确性.然后,用该耦合模型进行了不同地应力条件下流固耦合过程的数值模拟,探讨了水压力对于岩石损伤过程的作用机制.数值模拟表明,水压力导致了拉伸损伤范围的扩大和损伤程度的加剧,同时亦对剪切损伤具有抑制作用.
암석손상과정열-류-력(THM)우합문제적연구대우심부채광등허다공정영역도구유중요적이론의의.이암석적손상위주선,재다장우합분석방정중인입손상변량,기우질량수항화능량수항원리,제출암체손상과정중적THM우합모형.통과파균균탄성개질THM우합향응적모의결과여이론분석결과진행대비,험증료정서급유한원실시적정학성.연후,용해우합모형진행료불동지응력조건하류고우합과정적수치모의,탐토료수압력대우암석손상과정적작용궤제.수치모의표명,수압력도치료랍신손상범위적확대화손상정도적가극,동시역대전절손상구유억제작용.
The thermal-hydraulic-mechanical (THM) coupling during the rock failure is of great significance for many engineering applications such as deep underground mining. A coupled THM model during the rock failure is proposed based on the conservation of mass and energy of solid and fluid when the damage is considered as a key factor that controls the THM coupling. The proposed THM model is firstly utilized to simulate the THM response of elastic medium; and it is validated by comparing the numerical results with the analytical solutions. Secondly, this THM model is employed to predict the coupled hydromechanical response of rock under different in-situ stress conditions. The numerical simulations indicate that, compared with the numerical results without hydromechanical coupling, the hydraulic pressure can not only facilitate the tensile damage and extend the range of tensile damage zone, but also restrain the occurrence of shear damage.