Determination of Geological Strength Index and Slake Durability Index of Jointed Rock Mass along Champhai to Zokhawthar Highway

Lal Lawmsanga , Lal Dinpuia

Science Vision 24 (2), 31-38 | Published on 10 September 2024 | 10.33493/scivis.24.02.02

Abstract

The Geological Strength Index (GSI) system was developed using numerical analysis in response to the demand for accurate input data regarding the characteristics of rock masses for planning slopes, tunnels, or foundations in rocks. To acquire data and information regarding the mechanical behavior of the rock masses, field studies were conducted to analyze the stability of the slopes and the geological characteristics of the research area. The Slake Durability Test measures the resistance of rocks upon weathering that include clay. The study suggested that rock resistance decreased when exposed to a continuously wet and dry environment. The rate of disintegration increases due to changes in the environment, which causes physical and chemical weathering of rock. The Geological Strength Index is found to range between 42 and 54 based on the total observation results of the Structure Rating and Surface Condition Rating.

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