《河南水利与南水北调》2022年第12期试验与研究溜砂坡支护的装配式挡墙应用研究赵颖（江西省奉新县水利局，江西奉新330700）摘要：溜砂坡的不稳定性严重威胁了工程运行安全。以边坡治理为例，基于Flac3d有限元平台，研究了以“装配式挡墙+主动防护网”组合支护结构进行河道沿岸溜砂坡加固的有效性。研究结果表明:①边坡开挖后，溜砂坡将沿贯通面发生滑动破坏；采取“装配式挡墙+主动防护网”后，最大位移减小至10mm，最大剪应变增量从0.47减小至0.01，边坡整体处于稳定状态；②装配式挡墙与防护网在支护溜砂坡时，产生的位移与最大剪应力均满足工程安全要求；③坡脚位移的数值模拟结果约为3.80mm，与监测位移相对误差仅为18%，且位移变化趋势与实测数据一致。关键词：溜砂坡治理；装配式挡墙；主动防护网；贯通面；最大剪应力中图分类号：TU4文献标识码：A文章编号：1673-8853（2022）12-0080-02StudyonApplicationofAssembledRetainingWallforSand-slidingSlopeSupportZHAOYing（FengxinCountyWaterConservancyBureau,Fengxin330700,China）Abstract：Theinstabilityofsand-slidingslopeseriouslythreatensthesafetyofengineeringoperation.BasedontheFlac3dfiniteelementplatform,theslopetreatmentistakenasanexampletostudytheeffectivenessofthecombinedsupportingstructureofAssembledRetainingWallplusActiveProtectionNettoreinforcethesand-slidingslopealongtheriverbank.Theresultssuggestthreething.First,theslidingfailureofsand-slidingslopewilloccuralongthethroughsurfaceafterexcavation.Themaximumdisplacementwillbereducedto10mmafteradoptingAssembledRetainingWallplusActiveProtectiveNet,andthemaximumshearstrainincrementdecreasesfrom0.47to0.01,andtheslopeisinastablestate.Second,thedisplacementandthemaximumshearstressproducedbytheassembledretainingwallandtheprotectivenetcanmeettheengineeringsafetyrequirementswhensupportingthesand-slidingslope.Third,thedisplacementatthefootofslopeisabout3.8mm,whichrelativeerrorisonly18%.Thetrendofdisplacementisconsistentwiththemeasureddata.Keywords：sand-slidingslopetreatment;assembledretainingwall;activeprotectivenet;throughsurface;maximumshearstress1引言总结前人针对溜砂坡灾害防治理论成果，依托某溜砂坡为例，基于Flac3d有限元平台，模...
