降雨与库水共同作用下黄土岸坡塌岸模型试验研究

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关键词：水库；黄土岸坡；塌岸宽度；孔隙水压力；土压力中图分类号： TV697.3∗3 文献标志码：A doi：10.3969/j.issn.1000-1379.2026.02.024引用格式：周煜，田壬佳，高德彬，等.降雨与库水共同作用下黄土岸坡塌岸模型试验研究[J].人民黄河，2026，48（2）：155-160.

Experimental Study on the Collapse Model of Loess Bank Slope Under the Combined Action of Rainfall and Reservoir Water

ZHOU Yu1，2 ， TIAN Renjia1，²， GAO Debin 1，2 ， LI Zhengzheng³， WANG Changsheng （1.School of Geological Engineering and Surveying，Chang'an University，Xi'an 710054，China;2.WaterCycle and Geological Environment Observation and Research Station for the Chinese Loess Plateau，Ministry of Education， Zhengning 745399，China；3.Northwest Enginering Corporation Limited，Power China，Xi'an 710065，China; 4.Shaanxi 139 Coal Geology & Hydrogeology Co.，Ltd.，Weinan ，China）

Abstract：Reservoirwaterstoragecanleadtoadecreaseinthesabiltyoftebnksope，directlytheateningteologicalviot andhumansafetyintseviasedotis，ndoricaloelasosrucedndteifallisitsesid Forthewotestscearosofinglesevwatendhomidtofifallandsevoate，estprocsdvdtoix stages.Theresearchwasconductedonthecolapse morphologyoftelssbankslopeandtheresponselawsofsoilporewaterpresuread soilpressureuderthombdatiofifeentinfallintensitndesevoiraterThstultssoatotainfalle voir watercancauseanincreaseinheporewaterpressureadearthpresureoftebanksopesoil.Rainfallhasagreateripactnthede formationandfilureoftheupperbankslopewhileithasasmalerimpactonthemorhologyofthelowerbankslopeRainfallifilration causesmultipleclapsesoftheankslope，educingtheheightof teupperbankslopeandmakingthelwerbankslopecurve-shaped.With theincreaseiifalliesityteollssbomeoeiteeadthintealsetwncpssoes，dtolle width becomes larger. The collapse form changes from toppling to sliding.

Key Words： reservoir; loess bank slope；bank collapse width； pore water pressure; soil pressure

0 引言

水库蓄水改变库区岸坡的赋存环境与应力状态，导致许多岸坡转变为涉水岸坡[]，稳定性降低，加之近年来极端降雨事件频发，提高了涉水岸坡发生崩塌、滑坡等地质灾害的可能性，直接威胁库区的生态环境与人居安全。（剩余6801字）