黑龍江干流工程吹填堤防固結(jié)特性及固結(jié)沉降研究

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WEI Ping1，HE Jun1，SHENG Yuanyuan2，ZHANG Jia3，ZHENG Hua3 （1.Shuifa Planning& Design Co.，Ltd.， Ji’nan 25010O，China；2. Hydrological Center of Shandong vince，Ji'nan 250002，China；3.China Construction Civil Engineering Co.，Ltd.，Beijing 100071，Chinε

Abstract：Blow-fillsoilconsolidationcharacteristicsandconsolidationsetlementhaveanimportant impactonthestabilityof thefoundation.Inthispaper，taking thesandyblow-fillsoilof Heilongjiang main streamprojectastheresearchobject， compression testandshear test werecariedoutonthesoilsamplesonthe site，andatthesametime，thechange ruleof setlementofblow-fillsoilintheprocessofdrainageandconsolidationwasstudied.Theresultsshowthatthesettlement deformationofblow-fillsandysoilwillbelargerinthestateofhighwatercontent，andthesetlementdeformationwillbe graduallreducedwiththereductionofwatercontent；theperimeterpresurecanchangetheoriginalinteralstructureof theoil body，sothatthearrangementof thesoil particleschanges，andthe largertheperimeterpressureis，thelargertheplastic destructivestressofthesoilbodyis；thesetlementdeformationof theblow-fllsandysoilismainlycausedbytheporewater drainage ofthesoilbody，andthesandysoilhaslargercompresiondeformationinthestateof highwatercontent，thesoil samples have largercompresiondeformation，andthesandysoilhaslargercompressondeformationintheprocessofdrainage consolidationinthedrystreamproject.Thesandysoilhaslargecompressondeformationunderhighwatercontent，whichleads to excessive settlement deformation of the soil body.

Keywords：blow-fill embankment；sandy soil；； consolidation characteristics；consolidation settlement

0 引言

吹填技術(shù)以其適用范圍廣、工效高、材料來源廣泛、工程造價(jià)低等獨(dú)特的優(yōu)勢，在圍海造陸、堤防等工程中得到廣泛應(yīng)用[1-2]，然而，由于吹填材料多為疏松顆粒物，堤防在建設(shè)完成后的固結(jié)過程及其引發(fā)的固結(jié)沉降成為影響堤防結(jié)構(gòu)穩(wěn)定性的重要因素[3-4]。（剩余4667字）