Water infiltration and recharge cause stresses, deformations, and displacements in the soil, which can lead to landslides, subsidence, erosion, etc. The objective was to propose a solution for the internal energy equation, (water flow in the soil mass) based on modern mechanics and underground hydraulics. From continuum mechanics, the internal energy equation was analyzed: i) the distribution o...

This study investigates the influence of used motor oil contamination on the geotechnical behavior of soils collected from motor-mechanic workshop areas along Kohat Road and Barra Road in Peshawar, Pakistan. Soil samples were obtained from the ground surface and from a depth of 1 m to assess site-specific and depth-dependent variations in soil behavior. Laboratory tests were conducted to evalua...