Design Considerations for Ash Pond Dyke Construction in Hilly Terrain for High Concentrated Slurry Disposal: A Case Study

Document Type : Research Paper

Authors

1 Department of Civil Engineering, Manav Rachna International Institute of Research and Studies, Faridabad, India.

2 Geotechnical Consultant, M.Tech Liniva Consultants, New Delhi , India.

10.22059/ijmge.2024.357525.595052

Abstract

Designing an ash pond for High Concentrated Slurry Disposal (HCSD) in hilly terrains poses a unique set of challenges. In such regions, the availability of barren land adjacent to the project sites is limited, making it difficult to locate suitable sites for ash pond construction. Furthermore, the hilly terrain and complex topography demand careful planning and design to ensure the long-term stability and safety of the ash pond and associated infrastructure. This paper discusses the design considerations for the construction of an ash pond dykes in a hilly region of Vietnam for HCSD disposal. The case study highlights detailed geotechnical design investigations such as soil type, slope stability and groundwater conditions. In addition, geotechnical instrumentation to monitor the performance of ash pond dykes and the subsoil supporting it during and after construction is also discussed. The paper also examines the environmental and hydrological design aspects of the ash pond, including development of drainage and channelization concept along the hilly terrain to manage storm water and prevent the mixing of rain water with ash slurry, which could otherwise create an environmental hazard.

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[1]        Naresh, D.N.(2012). Management of Ash Disposal, Indian Geotechnical Conference. IIT Mumbai, 2012
[2]        Gandhi, S.R. (2005). Design and maintenance of Ash pond for Fly Ash Disposal, Indian Geotechnical Conference, 85 – 89.
[3]        Dey A. (2012). Stability of Ash Dykes: Peeping Through Case-Studies. National Workshop on Ground Improvement Techniques with reference to NE region, Guwahati, India
[4]        Saikia, P. (2012). Slope Stability Analysis of Geofabric Reinforced Ash Dyke: Development of GeoStudio Tutorial for Slope/W Summer Training Report, Department of Civil Engineering, Indian Institute of Technology Guwahati, India
[5]        Dutta M., Gulhati S.K. (2017). Geotechnical Engineering. Tata Mc Graw hill Publications, New Delhi
[6] Kumar R., Tiwari P.C. and Garg M.K. (2013). Comparative Study of High Concentration Slurry Disposal and Conventional Ash Slurry Disposal System. International Journal of Scientific & Engineering Research, 4(4).
[7]        Sundaray J.K. and Nayak S. (2015). A Comparative Study of High Concentration Slurry Disposal and Conventional Ash Slurry Disposal System of Thermal Power Plant. International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 4(4).
[8]        Singh J. and Singh R. (2015). A Comparative Study of High Concentration Slurry Disposal and Conventional Ash Slurry Disposal System. International Journal of Research in Engineering and Technology, 4(5)
[9]        Chelladurai K.G., Vignesh P., and Sathishkumar R. (2015). Design of Ash Pond in Hilly Terrain. International Journal of Innovative Research in Science, Engineering and Technology, 4 (12)
[10]      Jain A.K., Jha R.K., and Jha M.K.(2015). Hydrological Aspects of Ash Pond Design in Hilly Terrain. International Journal of Innovative Research in Science, Engineering and Technology, 4 (4).
[11]      Yuan Z., Liang C., Li D. (2018). Urban stormwater management based on an analysis of climate change: A case study of the Hebei and Guangdong provinces, Landscape and Urban Planning, 177, 217-226.
[12]      Dey A., Prashant A. and Basudhar P.K. (2009). Design of Ash Dyke and Divider Bund for Bongaigaon Thermal Power Project (4×250 MW), NTPC Ltd. Bongaigaon (Assam)” Submitted to NTPC, Bongaigaon