CAJ | 학술논문

以黄金坪水电站进水口边坡为例，结合工程地质条件和监测资料分析强烈松弛岩质边坡的变形特征，以及自然边坡和工程边坡的裂缝成因，并在此基础上结合数值方法分析支护结构的支护效果和边坡的稳定性。结果表明：自然边坡和工程边坡的裂缝均是强烈松弛岩体因开挖扰动进一步松弛的结果，但是自然边坡裂缝反映的是边坡岩体结构整体调整的结果，属于边坡整体变形与稳定问题，而工程边坡裂缝则是边坡局部块体沿加固薄弱部位外挤的结果，属于局部变形与稳定问题，即边坡尚处于变形阶段，未形成统一的潜在滑动面；原设计锚索和其他支护结构一起在边坡浅层形成厚度约50 m的锚固体，对边坡起到“挡墙”作用；增补锚索较深，对边坡的控制作用明显，施工完成后边坡趋于稳定，各种工况下的安全系数满足抗滑稳定性要求。
이황금평수전참진수구변파위례，결합공정지질조건화감측자료분석강렬송이암질변파적변형특정，이급자연변파화공정변파적렬봉성인，병재차기출상결합수치방법분석지호결구적지호효과화변파적은정성。결과표명：자연변파화공정변파적렬봉균시강렬송이암체인개알우동진일보송이적결과，단시자연변파렬봉반영적시변파암체결구정체조정적결과，속우변파정체변형여은정문제，이공정변파렬봉칙시변파국부괴체연가고박약부위외제적결과，속우국부변형여은정문제，즉변파상처우변형계단，미형성통일적잠재활동면；원설계묘색화기타지호결구일기재변파천층형성후도약50 m적묘고체，대변파기도“당장”작용；증보묘색교심，대변파적공제작용명현，시공완성후변파추우은정，각충공황하적안전계수만족항활은정성요구。
The intake slope of Huangjinping hydropower station,which cracked during excavation,was used as an example,to analyze the deformation characteristics of heavily loosened rock slope,based on its geological conditions and monitoring data. Then the crack causes of natural and cut slopes were given. At last,combined with the numerical method the effectiveness of supporting structure and the stability of the slope were evaluated. Results show that,the cracks both in the natural slope and in the cut slope are the result of structural adjustment of the rock mass due to the further loosening by excavation disturbance. However,the natural slope cracks is due to the adjustment of the whole slope mass and reflect the overall deformation and stability of the slope,while the cut slope cracks are due to the extrusion of rock blocks in a weakly supported zone and reflect local deformation and stability,i.e. the cracks are not directly related,and the slope is still in the deformation stage,no persistent slip surface is ever generated. Earlier supporting measures,mainly cable bolts,formed a reinforcing body of around 50 m thick horizontally near the slope surface,and function as a retaining wall. Supplementary cable bolts are deeper and can more effectively control the slope deformation. The slope deformation is converging gradually and its factors of safety meet the requirement of design code under all working conditions.