CAJ | 학술논문

煤系土是我国西南重丘区土木工程建设过程中新近揭示的一种不良土，在环境因素作用下，煤系土边坡常发生局部失稳事故。借助瞬态非饱和渗流软件，对降雨入渗条件下煤系土边坡的稳定状态进行模拟分析。结果表明降雨对无裂隙煤系土边坡的稳定性影响较小，滑动面埋深较大；降雨对含裂隙煤系土边坡影响较为突出，边坡稳定系数明显降低，危险滑动面多位于表层风化区内；稳定系数随着裂隙和风化深度的增加而降低，同时，边坡滑动面位置由边坡上部逐步向下部移动。研究成果与工程实际较为吻合，对于揭示煤系土边坡局部滑坡机理具有积极意义。
매계토시아국서남중구구토목공정건설과정중신근게시적일충불량토，재배경인소작용하，매계토변파상발생국부실은사고。차조순태비포화삼류연건，대강우입삼조건하매계토변파적은정상태진행모의분석。결과표명강우대무렬극매계토변파적은정성영향교소，활동면매심교대；강우대함렬극매계토변파영향교위돌출，변파은정계수명현강저，위험활동면다위우표층풍화구내；은정계수수착렬극화풍화심도적증가이강저，동시，변파활동면위치유변파상부축보향하부이동。연구성과여공정실제교위문합，대우게시매계토변파국부활파궤리구유적겁의의。
The coal-bearing soil is a poor soil which is revealed during the civil engineering con-struction of southwestern China recently,with the environment factors,the coal-bearing slope often occur local instability.The help of a transient unsaturated seepage software,this paper simulations and analysis the coal-bearing slope stable state under rainfall infiltration.The result shows that the rainfall to no crack coal-bearing soil slope of stability coefficient exit lesser impacts,dangerous landslide surface is located in deep;When considering crack,stability coefficient reduced significantly,and dangerous landslide is lo-cated in surface weathering zone;Stability coefficient will reduce with crack and the increase of the depth of weathering zone,meanwhile,the slope sliding surface position has a change trend from slope top to bottom.this research results is tallies with engineering practice,and which will have a positive influence to reveal the coal-bearing slope local landslide mechanism.