黑龙江干流工程吹填堤防固结特性及固结沉降研究

打开文本图片集

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

吹填技术以其适用范围广、工效高、材料来源广泛、工程造价低等独特的优势，在围海造陆、堤防等工程中得到广泛应用[1-2]，然而，由于吹填材料多为疏松颗粒物，堤防在建设完成后的固结过程及其引发的固结沉降成为影响堤防结构稳定性的重要因素[3-4]。（剩余4667字）