摘要
台湾地面沉降始于20世纪50年代,主要集中于西部沿海平原,沉降面积达1165km^2,约占平原区 的1/10,目前以彰化、屏东等地较为严重,最大累积沉降量达3.2m,最大沉降速率为17.6cm/a。台 湾地面沉降主要因开采地下水引起。目前采用GPS、一孔多标感应分层监测等技术实施地面沉降 监测,通过用水规划制定与督导实施地面沉降的控制与管理。
The occurrence of land subsidence in Taiwan began from 1950s and major focused in west seaside champaign. The suffered region extended to 1165km and 1/10 of the champaign area. It's very serious in Zhanghua and Pingdong region at present,which has experienced 3.2m of subsidence and the velocity is 17.6cm per year. The occurrence of land subsidence is major due to the exploitation of groundwater. The technique of GPS and intensometer which has many sensors in a hole has been used in land subsidence measuring and planned water using are used to control and manage the land subsidence at present.
