地面沉降成灾临界水位的识别及意义

Identification of Disaster-causal Critical Water Table of Land Subsidence and Its Significance

在分析以往研究不足的基础上,首次提出了地面沉降成灾临界水位的概念及一般确定方法。以长江三角洲地面沉降区代表城市为例,给出了根据已发生地面沉降灾害城市的地面沉降监测数据确定地面沉降成灾临界水位的具体方法,并确定了该地区地面沉降成灾临界水位。分析了地面沉降成灾临界水位对预防地面沉降灾害发生及合理开采地下水资源的重要意义。

Based on the previous research, the concept of ＂disaster causal critical water table＂ and its general identification method are propounded for the first time. Taking the typical cities in subsidence zone in Yangtze River delta as an example, the concrete identification method of disaster causal critical water table of land subsidence is brought forward according to the monitoring data of land subsidence and the critical water table is identified. In addition, the significance of the disaster causal critical water table to preventing land subsidence disaster and exploiting groundwater resource reasonably is also analyzed.