Study on the Multi-parameter Early Warning Based on Universal Equipment: A Case of Kamenziwan Landslide in the Three Gorges Reservoir

This paper takes the Kamenziwan landslide in the Three Gorges Reservoir as a case and introduces the whole process of the landslide monitoring and early warning, such as the site selection and design of reconnaissance investigation, installation, implementation, real-time transmission of monitoring data, and automatic warning. The front-end collection of monitoring data chose the universal integrated multi-parameter monitoring equipment (crack + dip Angle + accelerometer),rain gauge, accelerometer, etc for the professional monitoring of the key factors as "rainfall + deformation". NB-LOT and other public communication network were used for data transmission, which effectively reduced the communication cost and equipment consumption. The monitoring data was aggregated to the provincial platform and synchronized to the independently developed national system timely, and the early warning was automatically triggered by the criteria model. After nearly half a year' operation, the crack gauges and accelerometers installed on the landslide body have captured the obvious accelerated deformation information in time,showing the monitoring effect and early warning of the universal equipment. Besides,the system also sends real-time warning message to the mobile phones of relevant responsible personnel automatically which effectively guide the emergency work.