江苏省阳澄淀泖区水资源调度最低目标水位研究

采用江苏省阳澄淀泖区湘城和陈墓水文站1971—2007年的逐日实测水位数据,用P-Ⅲ型适线法分析汛期和非汛期不同频率下的水位,结合区域引排控制水位、防洪限制水位等因素,确定了阳澄区汛期、非汛期的最低目标水位为2.6 m、2.5 m,淀泖区为2.55 m、2.45 m。由航运最低水位、生态水位等进行复核,证明确定的最低目标水位是合理的。最后通过最低目标水位与太湖流域水量模型计算的水位进行可达性分析,结果说明区域现状水资源调度还不能保证各区在不同年型下的水资源总需求量,今后需加强水资源优化调度。

Study of minimum target water level for water resources regulation in Yangcheng and Dianmao districts of Jiangsu Province

The daily water levels observed from 1971 to 2007 at Xiangcheng and Chenmu hydrological stations in the Yangcheng and Dianmao districts of Jiangsu Province were analyzed. Through analysis of the water level with different frequencies in flood and non-flood seasons using the P-III type curve, with consideration of the regional diversion and drainage control water level and flood control water level, the minimum target water levels in flood and non-flood seasons were determined to be 2.6 m and 2.5 m for the Yangcheng District, and 2.55 m and 2.45 m for the Dianmao District, respectively. The determined minimum target water levels were re-checked using the minimum shipping water level and ecological water level, and were verified to be reasonable. Reachability analysis was conducted using the minimum target water level and the water level calculated by the water quantity model for the Taihu Basin. The results show that the regional water resources regulation cannot satisfy the total demand for water resources in the districts in different years, and optimal regulation of water resources should be strengthened in the future.