LABORATORY MODEL TEST ON INVESTIGATION OF EFFECT OF INVALIDATION OF SINGLE AND GROUP ANCHOR CABLE ON SLOPE STABILITY LABORATORY MODEL TEST ON INVESTIGATION OF EFFECT OF INVALIDATION OF SINGLE AND GROUP ANCHOR CABLE ON SLOPE STABILITY
Abstract：A series of laboratory model tests are carried out for typical rock slope in order to find load transfer phenomenon among anchor group resulted from anchor-hold variation or anchor failure. The deterioration process of slope stability and the instability appearance are studied. The influences of sash girders placed on slope face on tensile force in anchor cables and slope stability are discussed too. Anchor groups restrains slope deformation，makes rock mass uniform and solid，increases tenacity and the ability to bear great distortion without break. Anchor-hold variation in single anchor would obviously cause load transfer among anchor group. The structural plane compressive zone is weakened at the same time，and the general safety degree becomes lower. The single anchor failure will also cause the domino effect of anchor group，and slope stability decreases rapidly. Sash Girder structures placed on slope face can induce self bearing capacity of soil，share partial load carried by anchor group and improve slope stability. Sash girder structural strength should match the anchoring force mutually in slope reinforcing design.
