Research and investigation on continual collapsing coastal slope and rock tunnel

• Main Authors: HAI-YUEH CHUANG, 莊海岳
• Other Authors: 王泰典
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/5n9xgd

碩士 === 國立臺北科技大學 === 資源工程研究所 === 106 === In recent years, optical measurement technology has developed rapidly, and three-dimensional modeling based on optical technology, photogrammetry, and unmanned aerial vehicles has become increasingly popular. It has been widely used for real-time image acquisition after disasters, and quickly issued disaster information and disasters to competent authorities. Frequent collapses and rock fall were found in an abandoned highway in eastern Taiwan, where partial roadway was completely destroyed and rocks fallen on the ground in some bare rock section. Failure modes of rock slope were controlled by discontinuities. Subtle changes in lithology and attitude can exacerbate collapses. Novel technology boosted exquisite engineering geology investigation and analysis. Tunnel portal encompasses both engineering properties, convergence deformation of tunnels and slope stability, making quantitative investigation a challenge. This research focused on the causes to continual collapses of the slope adjacent to old Heping Tunnel. To adapt to the undulating and cave-in morphology, Unmanned Aerial Vehicle (UAV) was utilized to produce a high-resolution digital surface model of the slope that is high and steep. Failure modes of the slope were decided on the discontinuity geology interpreted from UAV-generated three-dimensional model. Main influence factors and forthcoming development of the case slope and tunnel were suggested along with micro-displacement monitoring and LiDAR scanning results of tunnel lining.