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201712041Shaanxishuili2016-10-1515JK2171。1982-。、[1,2]、、、。、[1]2~4。。。22.1710123、、、、。TV871AStudyonAnti-seepageStructureofFilledSand-bagCofferdamZhangHailong,MaBin,LiangYapingCivilandengineeringcollege,XijingUniversityXi’an710123,ShaanxiAbstract:ForthecoastalengineeringconstructioninYangtzeRiverestuaryarea,thereareinvolvedalargenum－berofcofferdamprojects.Duetotheshortageofsoil-stoneresources,theuseoflowcost,convenientconstruction,sim－pleengineeringofgeo-textilesandbagdikingtechniqueisusedmainly.Butthesandbagcofferdamstructureiseasyofseepageanditsstabilityproblem,combinedwiththeexampleofpigeoncageportsluicecofferdamprojectofYangtzeRiver,thecofferdamstructureisstudiedandfindoutwhichisinaccordancewiththeprincipleoflocalconditions.Itputsforwardthesandbagfilledsandandsteelsheetpilecofferdamstructure,andanalyzesandchooses.Theresultsshowthatthemethodofthereasonableimperviousgeomembraneofsandbagfilledsandcofferdamstructureisusedanditsan－ti-seepageeffectandstabilitycanmeettherequirementsofthespecifications,convenientconstructionandlowcost.Keywords:Cofferdamsandbagfilledsandimperviousgeomembraneseepageandstabilityandthewholestable1673-9000201701-0102-03·102·DOI:10.16747/j.cnki.cn61-1109/tv.2017.01.040Shaanxishuili201712041、、。、134。2.2、、。40m5①-1①-2②-1②-3④-1④-2⑤-1。。①-1、②-1④-1②-3CU4.76。②-3。。1。33.13.1.112②-33。、。。。3.1.2。①②③、④⑤5m1.26。①②③④⑤5m%γkN/m3cqkPaφqcm/s①-127.82.7218.71424.51.2×10-6②-132.42.7218.61523.55.65×10-6②-329.52.6918.51329.14×10-4④-146.72.751714122.27×10-7④-240.32.7317.31517·103·201712041Shaanxishuilig/m2400kN/m≥5kN/m≥5%30~100%30~100CBRkN≥1.1cm/s1×10-11～1×10~-13kN≥0.15N/cm≥62.28。、。3.220。6.0m1∶2.5、1∶23.50m5.0m1.50m2.0m。1。44.1K=9.14×10-4cm/s。1、150mm、350mm。500mm。4.2400g/m22。、1.0m。80%。、、。4.3205.82m、、3。。126·104·201712041Shaanxishuili/m3/d16.350.950.6821.850.340.0521.940.340.05205.82m15kPa。《》[3]K=MRMS=∑cili+Wcosθitanφi∑Wsinθi。K=1.521.05。5、。1,.[J].,2013,4421:28-36.2,.[J].,2015,4616:23-26.3SL274-2001[S].:2001.、、、5。3。、、、。。1.[J].2016,325:34-36.2.[J].20134:53-57.3.“”[J].2007,32S1:36-39.4.[J].2011404:184-185.5.“”[J].20084:35-36.0.2m651。C25。1317.6m5.7m1317.6m、1.2m×1.2m。7.0m1310.6m1.5m5.5m1.0m。420147。。123104·126·