In the report, aimed at the problems about the monitoring theory and technology of the hydraulic slopes failure under cyclone rainfall, a physical model test on the stability monitoring of weathering transition zone in hydraulic slopes was carried out. The results indicated that the surface erosion was caused by water-air interaction under cyclone rainfall, and the groundwater pressure fluctuation in the strong-weak weathering transition zone was the main cause of slope deformation. The pore water pressure of the slope weathering transition zone was positively correlated with rainfall intensity during rainfall infiltration, while the axial force loss of rock bolts in the weathering transition zone was intensified. The unloading response of the Intelligent Terminal Structure of the slope anchoring system was significant during the period of groundwater pressure fluctuation. Moreover, based on the nonlinear relationship between the axial force of the rock bolt and the pore water pressure, the stability monitoring criterion of weathered transition zone was proposed.

Deformable support systems are a new support technology for preventing geo-hazards such as large deformations of engineering rock masses, rock bursts, and roof falling. An intelligent terminal structure (ITS) is a device that consists of a memory tooth and a yield ring. It is assembled at the end of a traditional cable bolt and has the dual functions of adapting to the large deformation of rock masses and sensing the deformation of surrounding rock masses. This study focuses on adapting support systems to the deformation of rock masses dilation of tunnels and other underground engineering projects and monitoring the support systems. The design principle of the ITS of a cable bolt and the technical method for the perception of the deformation of a rock mass are proposed. The results determined that the CB-T6.0-R4.5 design parameters of the ITS of a cable bolt for a deformation support system of surrounding rock masses. This is beneficial for accurately recording the stress and deformation behavior of rock masses through the deformation of the ITS of a cable bolt. Therefore, the cable bolt with an ITS has important value for applications in deformable support technology and safety monitoring of engineering rock mass reinforcement.