CAJ | 학술논문

现代垃圾填埋场基本采用复合衬里结构，破坏面背坡沿垃圾填埋体内部、底坡沿衬里界面的平移滑动破坏形式成为垃圾填埋体可能的组合破坏形式之一。为了在目前该破坏形式稳定性计算方法的基础上考虑渗沥液的影响，假设穿过垃圾填埋体内部的破坏面为主动破坏面，利用刚体极限平衡分析方法，同时分类讨论渗沥液水位相对于特定界面的不同位置关系，得出每种情况下的计算方法。计算分析结果表明：渗沥液水位升高时，垃圾填埋体的破坏由沿衬里界面的平移滑动破坏演变为穿过垃圾填埋体内部和底部衬里的组合破坏；实际工程算例中，发生破坏失稳正是由于渗沥液水位过高引起的。
현대랄급전매장기본채용복합츤리결구，파배면배파연랄급전매체내부、저파연츤리계면적평이활동파배형식성위랄급전매체가능적조합파배형식지일。위료재목전해파배형식은정성계산방법적기출상고필삼력액적영향，가설천과랄급전매체내부적파배면위주동파배면，이용강체겁한평형분석방법，동시분류토론삼력액수위상대우특정계면적불동위치관계，득출매충정황하적계산방법。계산분석결과표명：삼력액수위승고시，랄급전매체적파배유연츤리계면적평이활동파배연변위천과랄급전매체내부화저부츤리적조합파배；실제공정산례중，발생파배실은정시유우삼력액수위과고인기적。
Composite liners are commonly used in modern landfills. The translational slide failure modes, in which the back slope of the failure surface slides along the inside of waste dump and the bottom slope slides along the liner interface, may become one of the composite failure modes. In this study, we considered the effects of leachate based on the methods for stability calculation of such failure modes. We assumed that the failure surface through the inside of the waste dump was an active failure surface. Then, we used the limit equilibrium analysis method and discussed different positional relationships between leachate levels and specific interfaces, in order to obtain the calculation methods for different situations. The results of analysis and calculation show that, when the leachate water levels rose, the failures of waste dumps changed from translational slides along the liner interface to composite failures through the inside of waste dumps and the bottom liner. In practical engineering examples, the failure and instability occurred precisely because the leachate water level was too high.