CAJ | 학술논문

目前，有关重力坝深浅层抗滑稳定问题的研究主要集中在分析方法和失稳判据上，而对于荷载作用下坝基岩体与软弱结构面不断弱化，进而导致大坝失稳的过程则鲜有成果。本文基于损伤力学的相关理论，考虑岩体材料的非均匀性，建立了坝基岩体损伤破坏的数值分析模型。以三峡大坝左岸3号非溢流坝段为研究对象，动态模拟了其坝基岩体的损伤破坏过程，给出损伤区的发展和不同损伤程度的分布，并对其整体稳定性进行了安全分析。计算结果与室内模型试验的结果相当接近，证明了本文建立的损伤数值模型的可靠性，表明本模型可以用于岩体破坏机理的研究和抗滑稳定安全性分析。
목전，유관중력패심천층항활은정문제적연구주요집중재분석방법화실은판거상，이대우하재작용하패기암체여연약결구면불단약화，진이도치대패실은적과정칙선유성과。본문기우손상역학적상관이론，고필암체재료적비균균성，건립료패기암체손상파배적수치분석모형。이삼협대패좌안3호비일류패단위연구대상，동태모의료기패기암체적손상파배과정，급출손상구적발전화불동손상정도적분포，병대기정체은정성진행료안전분석。계산결과여실내모형시험적결과상당접근，증명료본문건립적손상수치모형적가고성，표명본모형가이용우암체파배궤리적연구화항활은정안전성분석。
Currently, researches on the gravity dam deep and shallow anti-sliding stability mainly focus on the analysis method and instability criterion, while the studies on specifically test the breakage of gravity dams due to weakening foundation rock mass and structural planes under loading are rare. With damage me-chanics theory,a numerical model,considering the nonuniformity properties of rock materials,has been es-tablished to analyze the breakage process of dam foundation rock mass. Taking the No.3 non overflow dam section at left bank of the Three Gorges Dam as the research case,the damage process of the dam founda-tion was simulated dynamically. The development of damage zone and the distribution of different damage ex-tent were both presented, and the safety status of global stability was analyzed. The obtained results show that they are in consistent with model test results, indicating the reliability of the established damage mod-el, which can be used to analyze the breakage mechanism of rock mass and evaluated the safety of an-ti-sliding stability.