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为研究风化料包边河砂填筑路堤的边坡稳定性,基于强度折减法计算分析了填料压实度、含水率、路堤高度、边坡坡度及风化料包边宽度等诸多因素对边坡安全系数的影响规律。结果表明,路堤高度确定时,随着边坡坡度的增大,路堤的边坡稳定性显著下降;随着砂含水率的减小,安全系数呈增大趋势。在文中涉及的工程条件下,风化料包边宽度不对安全系数起决定性作用,其宽度可依据施工压实要求和料源的丰足程度确定。方差分析表明,边坡坡度、风化料包边宽度及填料含水率3个因素对边坡稳定性影响的程度依次为:边坡坡度>含水率>风化料包边宽度。
In order to study the slope stability of embankment filled with weathering material and river sand, the factors such as packing compaction degree, water cut, height of embankment, slope slope and the edging width of weathering material were analyzed based on the strength reduction method. The influence law of safety factor. The results show that when the embankment height is determined, the slope stability of the embankment decreases significantly with the increase of the slope gradient. As the sand moisture content decreases, the safety factor increases. Under the engineering conditions involved in the paper, the width of the weathering material edge does not play a decisive role in the safety factor, and its width can be determined according to the compaction requirements of construction and the abundance of material sources. Variance analysis shows that the degree of slope stability, slope gradient, water cut, and weathered edge width of the weathering material are affected by three factors: slope gradient, width of weathering material and water content of filler.