The invention describes a system for enhancing the capacity of fly ash dykes and tailing dams through the construction of steeper slope dykes using mechanically stabilized earth systems. This approach reduces land requirements while increasing the capacity of these structures. The hybrid method involves initial downstream expansion followed by upstream construction, incorporating comprehensive seepage analysis to improve safety. This innovative solution addresses the limitations of conventional methods, providing a safer, more efficient, and environmentally friendly way to manage fly ash disposal.
Figure (1) This schematic shows capacity augmentation with increase in base area with reinforced soil structures using as much of fly ash as possible with steeper face.
The increasing number and capacity of coal-based thermal power plants generate substantial amounts of fly ash, with only 40-50% currently being utilized. The remaining fly ash is typically disposed of in ash ponds with dykes, leading to significant land wastage. Conventional fly ash dykes often fail due to inadequate seepage analysis during design, resulting in economic losses, environmental pollution, and hazards to human and aquatic life. Current methods for maintaining these dykes are insufficient, necessitating a more effective system to safely enhance the capacity of fly ash dykes and tailings dams.
- Hybrid Construction Method: Combines downstream and upstream construction methods for optimal capacity and stability
- Mechanically Stabilized Earth Systems: Utilizes advanced soil stabilization techniques to create steeper slopes
- Land Requirement Reduction: Enhances capacity without the need for additional land, making the system more efficient and sustainable
- Seepage Analysis: Incorporates comprehensive seepage analysis to improve dyke safety and reduce failure rates
- Modular and Scalable: The method is adaptable to different site conditions and can be scaled to accommodate varying volumes of fly ash.
Central to the design is the use of mechanically stabilized earth (MSE) systems integrated with fly ash to form reinforced soil structures. These models effectively demonstrate the feasibility of modifying existing embankments—either through internal reconstruction or external reinforcement—to significantly enhance storage capacity. The methodological rigor and field-aligned parameters position the system as ready for pilot-scale implementation.
A comprehensive engineering design for the proposed dyke capacity enhancement system has been developed, incorporating volumetric modeling and performance-based structural calculations.
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This approach promotes environmental protection by reducing the risk of pollution associated with fly ash disposal. It also improves safety by enhancing the structural stability of fly ash dykes, thereby preventing potential failures and related hazards. Furthermore, it supports land conservation by minimizing the area needed for fly ash disposal, helping to preserve valuable land resources.
- Coal-Based Power Plants: For the disposal and management of fly ash
- Mining Operations: For the construction and maintenance of tailings dams
- Waste Management Facilities: To improve the capacity and stability of waste containment systems
- Civil Engineering Projects: Where soil stabilization and embankment construction are required
Geography of IP
Type of IP
201721016098
470360