In this paper

a large-scale physical model test of landslide prevention and control was conducted to investigate the deformation and displacement of the lattice anchor system in soil landslide under the surcharged load on the top of the slope. The objectives revealed the anti-sliding mechanism of lattice anchor. The relationship between the anchorage force and slope displacement and anchor deformation was discussed

and a calculation method of the ultimate anchorage force was proposed. The results showed that when the landslide was initiated

the lattice beam and the slope as a whole-body rotate and slip

the bolts are bent and deformed at the slip surface

which was in a state of bending and tensile stress. The anti-sliding is implemented by the shear resistance of anchors near the sliding surface and by the retaining resistance of the lattice beam with anchors. The ultimate anchorage force of the lattice anchor consists of three parts: initial pre-stress of the bolt

anchor tension caused by bending deformation of the bolt and anchor tension caused by the slope displacement. It can be calculated by the formula: . The results can provide some reference for the optimal design of the lattice anchor system.