Cement, Energy and Environment

Pit design is a critical phase in open-pit mining, impacting both operational efficiency and safety. Geotechnical and slope stability studies are essential to optimize pit geometry, ensure structural integrity, and minimize environmental and safety risks. This paper reviews the significance of geotechnical studies and slope stability assessments in pit design, highlighting methodologies, parameters, and analytical approaches that contribute to stable pit construction. Case studies from various mines illustrate the implications of slope stability on operational costs, safety, and environmental management. The design of open pits for mining necessitates comprehensive geotechnical evaluation and slope stability analysis. Such studies are integral to ensure that excavation processes are safe, efficient, and economical. Given the complexities of geological formations, variations in rock strength, and the potential for failure, slope stability analysis helps determine the most suitable pit slope angles and depths. This paper aims to elucidate the role of geotechnical and slope stability studies in pit design, outlining key parameters, methodologies, and the impact of these studies on mine safety and productivity. The geotechnical assessment begins with a detailed geological survey, essential for understanding lithological, structural, and hydrogeological conditions. Key aspects include: Rock Mass Characterization: Identifying lithology, rock quality designation (RQD),uniaxial compressive strength (UCS), and joint spacing. Structural Mapping: Determining the orientation of geological structures such as faults, joints, and bedding planes that influence slope stability. Hydrogeological Studies: Assessing groundwater conditions, pore water pressures, and potential seepage zones that can impact slope stability. Geotechnical Studies in Pit Design Understanding Site Geology Field Testing and Laboratory Analysis Abstract Introduction Several tests, both in situ and laboratory-based, are required to acquire precise data on rock and soil properties: The Importance of Geotechnical and Slope Stability Studies for Pit Design in Open-Pit Mining Senior Geologist Dalmia Cement (Bharat) Limited Mrinmoy Chakraborty 36