Transcript
EROSION AND SEEPAGE CONTROL OF
HIGH EMBANKMENT OF A CLOSED RED MUD POND
A CASE STUDY
KETAN N. SHAHK.K.ENTERPRISES
KOLKATA
Environment and Geotechnical Solutions Company
Red Mud PondRed Mud Pond
Red Mud is a waste generated when Red Mud is a waste generated when Aluminium is extracted from bauxite.Aluminium is extracted from bauxite.
It contains Oxides of Iron, Titanium and It contains Oxides of Iron, Titanium and CalciumCalcium
It contains trace amount of heavy metals It contains trace amount of heavy metals and sometimes radioactive materialsand sometimes radioactive materials
It is highly alkaline and causes soil and It is highly alkaline and causes soil and water pollutionwater pollution
Caustic and other chemicals leachingCaustic and other chemicals leaching
Old-Closed Red mud pond covered Old-Closed Red mud pond covered with Cinder and Soilwith Cinder and Soil
ProblemsProblems Leaching of caustic and other chemicals.Leaching of caustic and other chemicals.
Rain water entering from the top was coming Rain water entering from the top was coming out of the slope with caustic and other out of the slope with caustic and other hazardous chemicals and flowing into a nearby hazardous chemicals and flowing into a nearby River River
Erosion of slope of embankment.Erosion of slope of embankment. The slope was 40 to 45 degree steepThe slope was 40 to 45 degree steep Slope length was 22 to 27 mSlope length was 22 to 27 m Height 17m to 20 mHeight 17m to 20 m
PROBLEMPROBLEM
WASTE
Subarnarekha River
Cinder and Soil
IDEAL SOLUTIONIDEAL SOLUTION
Sheet Piling
Geosynthetic Capping
WASTE
The Acceptable SolutionThe Acceptable Solution
Leaching of chemicals could be decreased Leaching of chemicals could be decreased by controlling ingress of rain water into the by controlling ingress of rain water into the closed red mud pond.closed red mud pond. Drainage of rain water from the surfaceDrainage of rain water from the surface
Erosion could be minimised by growing Erosion could be minimised by growing vegetationvegetation Vegetation supported by coir geocellsVegetation supported by coir geocells
SOLUTIONSOLUTION
WASTE
Subarnrekha River
Cinder and Soil
Design – Cross Section ViewDesign – Cross Section View
Design – Plan ViewDesign – Plan View
Excavating Top TrenchExcavating Top Trench
Excavating the Top Trench Excavating the Top Trench
Laying of Fibertex F-25 in Top TrenchLaying of Fibertex F-25 in Top Trench
Trenches dug down the slopeTrenches dug down the slope
Installation of Viadrain and Perforated PipesInstallation of Viadrain and Perforated Pipes
Installation of Via DrainInstallation of Via Drain
Backfilling of Trenches with excavated soilBackfilling of Trenches with excavated soil
Slope after completion of drainage worksSlope after completion of drainage works
Installation of GeocellsInstallation of Geocells
Geocell and Top SoilGeocell and Top Soil
Gauging the success of the Drainage SystemGauging the success of the Drainage System
Progressive Vegetation after installationProgressive Vegetation after installation
Progressive Vegetation after installation 2Progressive Vegetation after installation 2
Progressive Vegetation after installation 3Progressive Vegetation after installation 3
The project was completed in May 2009 and is under
observation
Please visit us at www.florafab.com for future
updates
K.K.ENTERPRISESare proud to be associated with this
project as providers of Design materials and Supervision
Thank You for your kind attention !!
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