台灣地質地貌因造山運動活躍，山區面積大約佔國土總面積的百分之七十以上，當強降雨或長延時降雨發生時，時常誘發山區邊坡破壞。降雨引致之邊坡破壞通常具有延時與徵兆，因此發展此類災害之預警系統較易發揮成效。本研究選定台20線52k處公路邊坡為監測場址，此場址已有破壞歷史，前期資料顯示滑動面位於地下水位以下之崩積層與岩盤介面，至今邊坡尚未穩定，研究以微機電系統搭配感測器，發展具備雨量量測、地下水位、土壤分層含水量與地表傾角監測功能之監測系統，搭配無線傳輸功能，於選定之監測場址形成分佈式邊坡監測網路，透過WCDMA(3G)技術即時將現地監測數據上傳至雲端，結合太陽能電源系統，系統達到全自動化及長期監測之目標。由雨量計與含水量計監測結果顯示系統可及時反應現地降雨事件，而地下水位監測結果顯示此處有自由下水層，可能導致崩積層破壞。電壓監測亦顯示電源系統在長時間降雨期間能支撐系統運作，達到長期監測之目標。

Taiwan's geological features are active due to orogenic movements. When heavy rainfall or long-delay rainfall occurs, mountain slopes are often induced to be destroyed. Rainfall-induced slope damage usually has delays and signs, so early warning systems for developing such disasters are more effective. In this study, the site at South Cross-Island Highway 52K is selected as the monitoring site. The system is equipped with several sensors to develop a monitoring system with rainfall measurement, groundwater level, soil water content and surface dip monitoring function. With the wireless transmission function, a distributed slope monitoring network is formed at selected monitoring sites. WCDMA (3G) technology instantly uploads local monitoring data to the cloud, combined with solar power system, the system achieves the goal of full automation and long-term monitoring. The monitoring results of the rain gauge and the soil water content show that the system can react to the local rainfall events in time, and the groundwater level monitoring results show that there is a free aquifer, which may cause the slope failure. Voltage monitoring also shows that the power system can support system operation during long-term rainfall and achieve long-term monitoring goals. With the monitoring data, several relation of rainfall and groundwater level are found, by these relation, groundwater level fluctuation can be better estimated, and the monitoring will continue to increase the accuracy of the estimation.

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