Seismic site characterization of a few Indian coal ash deposits using multichannel analysis of surface waves

Parhi, Partha Sarathi; Balunaini, Umashankar; Sravanam, Sasanka Mouli

doi:10.1016/j.soildyn.2022.107192

Cited by 4 publications

(1 citation statement)

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“…According to Partha et al [4], over 82,200 acres of land in India were utilized as ash ponds, and these ponds were closed in accordance with Indian government regulations. The ash ponds will be used for a variety of lightweight construction projects, such as single-story structures, car parking, and small shopping complexes.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Liquefaction Potential of Ash Ponds in Indian Regions Incorporating Different Seismic Conditions

Kumar¹,

Sravanam²,

Bhushan³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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In India, coal ash is produced in quantities of over 70 million tons per year by NTPC plants with a global coal reserve of 8%. This coal ash will be held in ash ponds, which will be closed out when their capacity is reached. It can be decided whether to use the current ash pond or leave it unaltered based on the physical attributes and seismic characterization of the pond. Therefore, the characterization of coal ash ponds situated at NTPC Korba, Ramagundam, Singrauli, Sipat, and VTPS Vijayawada is presented in this research by considering shear wave velocity and penetration number. The seismic characterization of these sites is carried out in Deep-Soil employing equivalent linear analysis by considering the moment magnitude of four different earthquakes (Bhuj, Chamoli, India-Burma, and Kobe) through which peak surface accelerations and maximum strains are inferred. With the magnitudes of factor of safety and acceleration, respectively, it is determined that the ash ponds examined in this research are susceptible to liquefaction. The results of the Mercalli scale are compared to show the potentiality of vibrations induced by the earthquakes evaluated in this study. The ranges of accelerations determined from the final analysis show that the Kobe earthquake produced moderate to heavy damage while inflicting severe perceived shaking.

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Section: Introductionmentioning

confidence: 99%