Monitoring, early warning and prevention measures for high-steep slopes in high-voltage tower areas

Abstract In high-voltage tower areas, high-steep slopes with siltstone as the main lithology have poor engineering characteristics, which can increase the risk of engineering failures and disasters, such as landslides, collapses, and cracking the supporting structure of buildings. Thus, it is necessary to protect the high-voltage towers in the prevention process, which also brings great challenges to monitor, early warn and respond to emergency disposal of engineering failures and disasters. In this paper, intelligent monitoring, early warning and forecasting were carried out on the high-steep slopes in the high-voltage tower areas along the expressway under construction in Guangxi, China. The emergency rescue measures for protecting the 500KV high-voltage towers on the top of slope were initiated. At the same time, automatic monitoring data, emergency rescue scheme and rescue effects were analysed. It was found that the information about early warning for disasters could be timely identified to support the cause analysis and assessment of disposal schemes effectively. Also, the early warning criterion of tangential angle could be used for early warning and forecasting the failures of high-steep slopes in high-voltage tower areas. From the analysis of the position of sliding slope surface, emergency disposal measures of timely layered counter-pressure method and micro-piles, we can effectively control the activities of landslides and prevent the further acceleration of landslide failures. The study can be an important reference for monitoring, early warning, forecasting and emergency rescue of high-steep slopes in high-voltage tower areas.