变被动护弯为主动治理的一种新尝试

1006-8139(2001)01-87-2(043200):,,,,,,,,,:;;;,,1/4000,,60100m,240500m,315416m,60%,,,,,,,5,19881996,3131,,620m,,,30,,,1,,20,210m,,,,,,314,,,2,,108,,,,520m,,15m,,,,,,210m,,(1)123210m45678360m91,;,,,,,,,,,,,,,,,,,,,,,,781(137)No.1(TotalNo.137)20012SHANXIHYDROTECHNICSFeb.2001,,,,,,,,,,,,,,,3,,210m311,,,260m,1,360m,5m,1115,315413m,,8,,,312(1),5m,10m,118m,35,160†/s,,,,3m,,,120†,6m,6820cm,,,,,,,(2),82m,,,,70%,,,1m,212m,3m,11,13,,,1m,,,3m,92m,313,,,,,14m,4m,314,,43m,8m,9m,12,1115,3m,,,,013014m1212m,,,,,,,,,315,,,96m41),,,,,,,,,,2),,,,,,,,,,,,,,,,,,,,,,,;,,,,881(137)20012:No.1(TotalNo.137)Feb.20011006-8139(2001)01-89-3(044000):,,,,,,:;;,50,,70,,,,,,,,,,,,,,,,,,,,,,,5,,,,,,,,,300m,,,,,,,,,,:,,[:1999210215]ATrialofChangingPassiveProtectionBendintoPositiveControlZhengHuaishanAbstract:Inthispaper,thecontolofirregularbendinYuanjiazhuang,downstreamofFenheRiveristakenasanexample,theauthorspointedoutthattheirregularbendofriverinalluvialplaincannotbeeffectivelycontrolledonlybybanksprotectionbecausethepointwherewaterflowcollideswiththebankchangesincessantlyofitspo2sition,andthereforeholdthatonlybycombiningthecut-offworkswiththedredgingworks,cantheriverregimebestraightenedout,andthereby,toattainthedualgoalofboththepermanentcontrolandthetempo2rarycontroloftheriver.KeyWords:RiverCut-offControl981(137)No.1(TotalNo.137)20012SHANXIHYDROTECHNICSFeb.2001