Soil nailing is a geotechnical technique used to reinforce slopes, retaining walls, and excavations by inserting steel rods (nails) into the soil or rock and grouting them to enhance stability. The nails are typically installed at an angle, with grout filling the drilled holes to increase friction and bond the nails to the surrounding material. This method provides effective stabilization, especially in challenging or confined spaces, offering a cost-effective alternative to traditional reinforcement techniques like massive retaining walls. Would you like to delve deeper into the design or application specifics?