Physical Model Test On Pre-stressed Lattice Anchoring Technology For Landslide Prevention And Control

Pre-stressed trellis anchoring system is an actively against slide structure reinforced in surface and deep slope. Light structure, simple construction, safe technology are all its advantages. In landslide prevention, pre-stressed trellis anchoring technology can be used coordinately with piles as well as vegetation protection technology. It can not only both achieve the purpose of keeping slide stable, but also green landslide effectively. In all, it’s an efficient, economic and environmentally landslide remediation.The paper relies on the project of geological survey bureau “large physical model test of landslide prevention trellis anchoring technology(item number:1212011220145)”,which focuses on the mechanism, deformation characters and failure modes. Through research can draw the conclusions as follows:(1) Determine the similar constant according to the similarity theory, and design the large physical model test of landslide prevention trellis anchoring technology.(2) Get the displacement and deformation of landslide and lattice girder through the total station monitor and displacement meter testing. Through the pressure box buried in toe and slope, we get the stress distribution inside landslide. Test the reacting force distribution of lattice beam to bottom ground by the miniature pressure cell. By installing the strain gauges on the anchor reinforcement, we study the mechanical characters, distribution and deformation of the pre-stressed trellis anchoring system. Through installing the strain gauges on the steel trellis girder, get the variation law of trellis girder while sliding.(3) Analyze the destruction types of pre-stressed trellis anchor system with the use of failure mode and effect analysis(FMEA)method. Summarize the main destruction type and analyze the key point of design and construction phases. It does have some reference value to pre-stressed trellis anchor system.