Abstract: Slope system is a natural mechanical system.Its deformation,cracking,instability,and slippage are a complex and difficult to measure natural mechanical process,which often causes serious casualties and loss of land resources due to shallow landslide disasters.Therefore,exploring the laws and sensitive parameters of rock mass degradation induced by internal and external forces in the shallow slope rock mass is the key to monitoring and conduct early warning of shallow landslides.In this paper,the selfdeveloped slope sliding force NPR anchor cable monitoring and early warning system is used to carry out the whole process monitoring test of the shallow rock mass degradation induced by land reclamation in Chenjiashan Village,Xinchang County.Through the slope geological survey,the slope sliding force NPR anchor cable monitoring and early warning system at the key monitoring points are installed,the onsite marking method is adopted to record the time and space characteristics of the land reclamation machinery excavation points and the monitoring points,so as to analyze the correlation between the deterioration deformation characteristics of shallow slope rock mass and the evolution characteristics of sliding force monitoring curves,and reveal the sensitivity of the system for slope stability monitoring and the presliding warning time of Chengjiashan Village under specific geological conditions.The test results show that for the slope type with loose accumulation layer in Chenjiashan Village,under the disturbance of land reclamation and excavation,the sliding force monitoring curve does not show the "unstable mode" of slow rise and the "crack mode of sudden rise" similar to the failure of rock slope.The sliding force monitoring curve presents a "multiple slip mode" with the step sudden drop as the excavation point gets closer to the monitoring point.The effective distance monitoring sensitivity of the system is 35 m for the slope type with loose accumulation layer,and the analysis results can provide a reference for the stability monitoring and early warning of similar slopes.

Key words: loosely accumulated shallow slope,land reclamation,distance sensitivity,sliding force monitoring and early warning system,early warning mode