Abstract
Solid waste materials in improper disposal sites or illegal dumping sites contain various types of materials. Mechanical property of solid waste materials has not been clarified sufficiently due to its complex composition. In this study, in-situ direct shear and permeability tests were performed for calculating slope stability of solid waste deposit in Japan, where the large crack was occurred on the ground surface. Strength properties on solid waste material and original ground were obtained from the in-situ direct shear test. Permeability of the ground was also measured by in-situ permeability test. Influence of ground and water conditions on slope stability was discussed based on the calculation results.
