Abstract
Coal-fired thermal power plants worldwide are encountering significant challenges in handling and disposing of the ash generated during the combustion process. The problem is further exacerbated by the high ash content (30–52%) present in Indian coal. Thermal power plants face major concerns regarding the safe disposal of coal ash and the need for large storage areas. Consequently, efforts have been made to find alternative uses for the ash, rather than simply dumping it in nearby ash ponds. One promising approach involves utilizing underground mine voids to accommodate the bulk of the fly ash. Underground mine spaces have the greatest potential for storing fly ash in large quantities compared to other possible applications. The process involves using filling materials to reinforce the surrounding rock and provide support to the overlying strata, thereby reducing surface subsidence. This paper presents a study conducted in this context, focusing on the bulk utilization of fly ash in backfilling applications. The research aimed to find viable solutions for effectively utilizing fly ash, thereby addressing the challenges faced by coal-based thermal power plants in managing and disposing of this by-product. This innovative approach presents an encouraging solution for sustainable mining practices and minimizing the environmental impact associated with coal extraction.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Ahmaruzzaman, M.: A review on the utilization of fly ash. Prog. Energy Combust. Sci. 36, 327–363 (2010)
ASTM C 618 94. Standard specification for coal Fly ash and raw or calcined natural pozzolana for use as a mineral admixture in Portland cement concrete. In: Annual Book of ASTM Standards, American Society for Testing and Materials, Philadelphia, 4(8), 00304-306 (1995)
Banita, B., Mishra, M.K.: Strength behaviour of surface coal mine overburden–fly ash mixes stabilised with quick lime. Int. J. Mining Reclamation Environ., 1–17 (2011). https://doi.org/10.1080/17480930.2011.552285
Dutta, B.K., Khanra, S., Mallick, D.: Leaching of elements from coal fly ash – assessment of its potential for use in filling abandoned coal mines. Fuel 88, 1314–1323 (2009)
Goswami, R.K., Mahanta, C.: Leaching characteristics of residual lateritic soils stabilised with fly ash and lime for geotechnical applications. Waste Manage. 27, 466–481 (2007)
Kashi, V.K., Karmakar, N.C., Krishnamoorthi, S., Adhikary, P., Sahu, A.R.: A laboratory study on application of synthesised amylopectin-grafted-polyacrylamide (AP-g-PAM) on coal mine haul road dust emission at different atmospheric temperatures. J. Inst. Eng. India: Ser. D (2023). https://doi.org/10.1007/s40033-023-00473-y
Kashi, V.K., Karmakar, N.C., Krishnamoorthi, S., Sonker, E., Adhikary, P., Tiwari, R.: Reducing the dust generation of haul road by improving water holding capacity with the application of synthesised polyacrylamide at laboratory condition. Nat. Environ. Pollut. Technol. 19, 413–419 (2020)
Kumar, V.: A comprehensive model for fly ash handling and transportation for mining sector. In: Fly Ash: An Opportunity for Mining Sector, New Delhi, India (2010)
Mishra, D., Das, S.K.: A study of physico-chemical and mineralogical properties of Talcher coal fly ash for stowing in underground coal mines. Mater. Charact. 61, 1252–1259 (2010)
Mishra, M.K., Rao, U.M.K.: Geotechnical characterisation of fly ash composites for backfilling mine voids. Geotech. Geol. Eng. 24(6), 1749–1765 (2006)
Naik, H., Mishra, M.K.: Characterization of Indian fly ashes for mine stowing purposes. In: Proceedings of the Eighth International Conference on Advances in Applied Science and Environmental Technology – ASET, pp. 27–36 (2018)
Sivapullaiah, P.V., Prasanth, J.P., Sreedhara, A.: A optimization of lime content for fly ash. J. Test. Eval. 23(2), 222–227 (1995)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Kashi, V.K., Sahu, A.R., Kumar, R. (2023). Utilization of Fly-Ash in the Backfilling of Void in Underground Mines. In: Sinha, A., Sarkar, B.C., Mandal, P.K. (eds) Proceedings of the 10th Asian Mining Congress 2023. AMC 2023. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-031-46966-4_21
Download citation
DOI: https://doi.org/10.1007/978-3-031-46966-4_21
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-031-46965-7
Online ISBN: 978-3-031-46966-4
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)