已有 393 次阅读2011-5-16 10:55
海河是天津的血脉,河道清淤为环保型清淤,清淤范围内一般清淤深度1~2m,最大4 m。实施目的为清除原河底全部淤泥层,用以改善河道水质、提高通航和行洪能力。01
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