International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 01 | Jan 2025
p-ISSN: 2395-0072
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Experimental Investigation on Soil Liquefaction Susceptibility in Different Regions of Chhattisgarh Prof. Deepanjali Sahu1, Dr. M.K. Tiwari2 1Ph.D. Scholar Dr. C. V. Raman University, Kota Bilaspur, C.G. 2Principal, Dr. C. V. Raman University, Kota Bilaspur, C.G.
-----------------------------------------------------------------------***-------------------------------------------------------------------contributes to better risk assessment and preparedness ABSTRACT strategies for earthquake-related hazards.
Soil liquefaction is a significant geotechnical hazard in regions susceptible to seismic activity, as it can lead to substantial structural damage and loss of life. This study focuses on the experimental investigation of soil liquefaction susceptibility across different regions of Chhattisgarh. Representative soil samples were collected from various locations within the state, characterized by diverse geological and geotechnical conditions.
2. STUDY AREA Chhattisgarh is characterized by diverse geological formations, including alluvial soils, red lateritic soils, black cotton soils, and mixed soils. The state has regions with varying soil compositions and water table levels, influencing their liquefaction susceptibility. Key regions selected for the study include:
Laboratory tests, including grain size analysis, Atterberg limits, and cyclic triaxial tests, were conducted to evaluate the liquefaction potential of these soils under simulated earthquake loading conditions. The study analyzes the correlation between soil properties—such as particle size distribution, plasticity, and density—and their susceptibility to liquefaction. Results indicate significant variations in liquefaction potential across regions, influenced by soil type, groundwater conditions, and seismic loading parameters. This investigation provides valuable insights into the behaviour of soils in Chhattisgarh under seismic events, contributing to improved risk assessment and the development of effective mitigation strategies for earthquake-prone areas. Keywords: - Liquefaction, Standard Penetration Test, CPT, Soil, Cohesion less.
Bilaspur: Features sandy and mixed soils, with moderate to high groundwater levels.
Durg-Bhilai Region: Characterized by black cotton soils with a high swelling potential and shallow groundwater.
Korba: Known for red lateritic soils and mining activities, with low to moderate groundwater levels.
Jagdalpur: Features alluvial soils riverbanks, with a high water table.
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3.1. Study Area Selection To represent the diversity in soil types across Chhattisgarh, five key regions were selected based on their geological and hydrological characteristics:
This study aims to analyze the liquefaction potential of soils from different regions of Chhattisgarh through experimental methods. By understanding the geotechnical characteristics of these soils, the research
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soils
The methodologies for evaluating soil liquefaction susceptibility involves a systematic approach to collect, prepares, and analyze soil samples under laboratory conditions. Below is a detailed explanation of each step:
Soil liquefaction is a phenomenon where saturated soils lose their strength and stiffness in response to dynamic loading, such as earthquakes, causing them to behave like a liquid. This phenomenon poses a significant threat to structures, infrastructure, and human life in seismically active regions. Although Chhattisgarh is not classified as a high-seismic zone, its varying soil compositions, coupled with potential seismic activities from neighbouring regions, make it imperative to assess the liquefaction susceptibility of its soils.
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Raipur: Dominated by clayey moderate groundwater levels.
3. METHODOLOGY
1. INTRODUCTION
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Raipur: Clay-rich soils with moderate seismic vulnerability.
Bilaspur: Sandy soils with a shallow water table.
Durg-Bhilai: Predominantly black cotton soils with high swelling potential.
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