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两淮采煤沉陷区水系结构修复对矿区水生态环境功能十分重要,研究归纳了塌陷湖泊“封闭”、河湖常年联通与季节性联通及河流-湖泊串联等多种不同水量调蓄和污染负荷模式.在两淮矿区各选取3个塌陷湖泊站点,分别为淮南潘谢潘集站(PXPJ)、潘谢顾桥站(PXGQ)和潘谢谢桥站(PXXQ),淮北东湖(HBDH)、淮北中湖(HBZH)和淮北南湖(HBNH),利用Vollenweider混合箱式模型研究了湖泊水体磷含量对水量调蓄和污染负荷的响应特征.模拟结果和塌陷湖泊水体实际磷含量水平状态吻合良好,两淮塌陷湖泊中总磷(TP)的质量浓度ρ(TP)能分别保持在Ⅲ类(ρ(TP)≤0.05mg/L)、Ⅳ类(ρ(TP)≤0.10mg/L)或Ⅴ类(ρ(TP)≤0.20mg/L)水平范围,从而实现不同的水体功能目标.建立良好的生态缓冲带,减少外源污染负荷输入,优化水系结构与调蓄方式是不同水质目标实现的3个重要方面.
It is very important to rehabilitate the water ecosystem in the subsidence area of Lianghuai coalfield. It is concluded that the subsidence of the subsidence lake, the closure of the submarine lake, the connection of the perennial Unicom with the seasonal Unicom and the series of rivers and lakes, Pollution Load Model. Three sites of collapse lake were selected in Lianghuai mining area, which are respectively PXPJ, PXGQ, PXXQ, HBDH, , Lake Huaibei (HBZH) and Huaibei Nanhu (HBNH), and the Vollenweider mixed-box model was used to study the response characteristics of lake water phosphorus content to water storage and pollution load.The simulation results are in good agreement with the actual phosphorus content of the water bodies in the subsidence lake (Ρ (TP) ≤0.05mg / L), Ⅳ (ρ (TP) ≤0.10mg / L) or Ⅴ (ρ (TP) ≤0.20mg / L), so as to achieve different water body function targets.Establishing a good eco-buffer zone, reducing the input of external pollution load, optimizing the water system structure and the regulation and storage method are the goals of different water quality The three important aspects.