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New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
New techniques of erosion controls on hill roads[ a v shinde]
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New techniques of erosion controls on hill roads[ a v shinde]

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  • 1. WELCOME
  • 2. NEW TECHNIQUES OF EROSION CONTROLS ON HILL ROADS GUIDED BY PRESENTED BY LECT. MANJU.P.M Lekshmi priya.mEPARTMENT OF CIVIL ENGINEERING S7,CIVIL ENGG Roll Number:31
  • 3. INTRODUCTIONTransportation contributes all rounddevelopment of a country and hence plays avital rate towards its progress. If the highwaysare not properly located and may contributesediments to streams. The control of soil andwater is basic to the protection of the roadstructure and therefore highway design,construction and maintenance must becontinually evaluated to minimize erosion andsedimentation problems
  • 4. MECHANISM OF SURFACE EROSIONRain drops hit the slope surfaceImpact of raindrop detaches theparticle of soilThe runoff water flowing on slopesurface transports the detachedparticle and may also contribute tofurther detachment
  • 5. TYPES OF EROSIONWIND EROSIONRAIN EROSION
  • 6. WIND EROSION Exposed slope of non-cohesiveloose and dry soil Lack of shelter from windExposed surface with out anyprotection
  • 7. FACTORS CONTROLLING WIND EROSIONWind velocityParticle size of the materialexposed to windMoisture content of soilVegetative cover
  • 8. RAIN EROSIONRain erosion is phenomenon of transporting ofsoil particle due to water action, the influencingfactors for rain water erosion are Potential of flowing water for initiating particledetachmentPhysical features ie topography, gradient,embankment slope etcSoil erodibility governed by clay content, particlesize distribution, compaction , permeability,shear strength parameters etc of the soil
  • 9. OBJECTIVES OF EROSION CONTROLTo prevent damage to land adjacent to theroad structureTo reduce the soil loss from the land widthof road, which silts up drainage channeland pollute riversTo contribute to the improvement of theaesthetics of the landscapeTo protect and preserve the earth work offill or cut slope, ditches and drainagestructure
  • 10. EROSION CONTROL SYSTEMTRADITION/ CONVENTIONALMETHODSAgronomic methodNon-agronomic methodNEW TECHNIQUES –ENGINEERINOVATIONReinforced vegetationCoir geotextiles
  • 11. AGRONOMIC METHOD Simple vegetativetrufing Mulching of slope
  • 12. NON AGRONOMIC METHODProper road side drainage systemSoil cement stabilizationProvision of aprons
  • 13. REINFORCED VEGETATIONReinforced vegetation by using geo-textiles &other materials improving slop stabilitySynthetics jute & coir used as geo-textilesGeo-textiles are used for engineeringapplications due to their long lifeDisadvantage is that it causes air and waterpollution while their non biodegradibility isresponsible for increasing soil pollution
  • 14. COIR GEOTEXTILESMade from coconut fiber extractedfrom the husk of the coconut fruitIt is a biodegradable organic fibrematerial containing cellulose andligninIt gives max protection to the soil
  • 15. SOME NEW TRENDSSILT FENCECURLEX QUICK GRASSSTEEL GROUND STAPLESDE WITT PROSPUNLANDSCAPE FABRICPOLYPROPYLENE SANDBAGS
  • 16. SILT FENCEDurableLight weightEasy to use
  • 17. CULEX QUICK GRASS
  • 18. STEEL GROUND STAPLESUse to anchor your landscape fabricsEach measures 6”L X 1” W
  • 19. DeWitt pros pun Landscape FabricCapability to stopweed growthEnvironmentallysafeEasy to use
  • 20. POLYPROPYLENE SAND BAGS White poly-stringtie bags aremade of wovenPolypropyleneString isattached tothe bag.Each bagMeasures14” W X 26” L
  • 21. CONCLUSIONIn all new construction erosion levels should be assessed in advance and appropriate protection measures are incorpoated in design. In case of existing structures facing erosion problems, both short term and long term measures should be considered to ensure stability. For overall economy use of locally available materials should be the first choice. In extreme climatic conditions polymeric grids with root reinforcing mechanism may be used even though they are costly
  • 22. REFERENCEAzeem A and Ali A (1992) Erosion causes andcontrol techniques for slopes of banks andcuttings, proceeding Indian geotecnicalconference 1992 ,pp;457-462Indian highways vol 32 no:6 jane 2004Coir –organic fibre geotextiles for soil erosioncontrol –by coir board of India
  • 23. THANKYOU

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