Soil nailing is a construction technique used to stabilize and reinforce soil slopes or excavations. It involves inserting long, slender steel bars, called nails, into the ground at an angle. These nails are typically grouted in place, creating a strong bond with the surrounding soil, which helps to prevent landslides and erosion. This method is often used in conjunction with other techniques, such as retaining walls or shotcrete, to enhance stability. Soil nailing is particularly useful in urban areas where space is limited, as it requires less excavation and can be installed quickly, minimizing disruption to the surrounding environment.