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1、Sub-gradeProtectionandReinforcementDesignSection1Overview1,thesignificanceofprotectionandreinforcement2,thefacilitiesofprotectionandreinforcementworks1、slopeprotection1）plantprotection(1)、seedingNotsteepforgrassgrowthina1:1soilslope(2)、soddingForasteepslope,severeerosion,runoffrateisgreaterthan0.6m/
2、s,theregionnearthegrassembankmentsourceseasier.(3)、planttreesMainfunctionisreinforcingtheslope,topreventandreducewatererosion.2、EngineeringProtection1）PlasteringandPointingJointPlastersuitsforeasilyweatheredsoftrockcutslope.Generallyusedinthelimeslagmortar,stonemortar.Pointingjiontappliestohard,note
3、asytocrackandmoreweatheredbutthejoints,thinrockslopetopreventdiseasescausedbywaterpenetrationinsidetherock.2）GroutingandGunitingGroutingappliestohard,localexistenceoflargeanddeepcracksorholes,andfurtherexpansionofslopestabilityborderoftheslope.Gunitingappliestosmoothandeasyweatheringoffreshrockslope
4、.3）AnchorHangingNet（concrete）ProtectionItappliestotheslopeforthefracturedhardrockordiscontinuouslayeredstructurelikerockformationsanddowntheslopeexcavationslope.4）masonryprotectionTopreventsurfacerunofforrivererosion,roadfillslope,immersionpartsoftheslopealongtheriverembankment,soilcutthelowerpartof
5、thelocalslopeandtheslopenearthebridge,canusemasonryprotection.5、facingwallFacingwallappliestoweatheringorsevereweatheringandcrushing,landslideeasytoproducedebrisavalancheofrockcuttingslopeorvulnerabletoerosion,poorsoilswellinglargerSlope.Section3Erosionprotection◆DirectprotectionDirectprotectionisam
6、easureofdirectreinforcement,characterizedbylittleornointerferencewiththeflowpropertiesoftheoriginaldisturbance.1RriprapprotectionRiprapprotectionistopreventtheflowofbankerosionorforcestructuresandthelargerstonesfilledprotectivemeasures.2、GabionprotectionGabionprotectionreferstotheriverbanksorstructu
7、restopreventerosionbywaterandsetacagefilledwithrocks.3GeomembranebagGeotextilefabricbagsisadoublebag,thebagfilledwithliquidconcreteorcementmortarorthinstoneconcrete,formedaftersolidificationofhighstre
