新疆卡拉贝利水库淤积现状分析及预测

泥沙淤积直接影响水库的正常运用和使用寿命,为掌握新疆卡拉贝利水库现状及未来的泥沙淤积情况,本文首先根据实测资料分析卡拉贝利水库运行6年的库区泥沙淤积情况,然后建立水库一维泥沙数学模型,在对模型进行验证的基础上,预测计算水库运用50年的泥沙淤积情况。研究结果表明,所建模型可以较好地模拟出卡拉贝利水库泥沙淤积过程及分布,计算结果与实测资料吻合良好,卡拉贝利水库运行初期淤积速度较快,主要淤积在死水位以下的河道主槽内;水库运行20年时死库容基本淤满,此后淤积速度明显减缓;水库运行30年后,平均排沙比在90%以上,库区泥沙基本达到平衡状态;在水库运行50年时,总库容损失49.24%,库区总淤积量为12871.95万m^(3)。

Application of the Sediment Mathematical Modelling on Planned Project of Lingdingyang Bay

Based on the combined hydraulic calculation for the eastern network region at the Pearl River estuary and several outlets to the Lingdingyang Bay, the sediment calculation modelling was introduced in the establishment of the sediment mathematical model for Lingdingyang Bay and the eastern region with one and two dimensional flow calculation. Model adjustment and verification were performed in conjunction with field data. The simulated results coincide well with measured data.In addition the model is applied to predict the shore-line planning scheme of Lingdingyang Bay.The theoretical criterion is provided for the shore line plan in the model.And a new mathematical simulated method is put out to research the planning engineering concerned with one-dimensional net rivers and two-dimensional estuary.

北展分滞洪工程改造方案研究

北展分滞洪区是黄河下游的重要防洪工程。但自建立以来还没有投入使用。随着黄河防洪形势的变化 ,改变目前这种分滞洪区布置模式的要求也提到了议事日程上。就北展分滞洪区的改造问题 ,当地政府及有关领导提出了建设济南堰 ,彻底解决黄河洪水对济南市的威胁 ,利用黄河水资源为泉城造福的设想。作者通过一维水流泥沙数学模型研究了工程改造过程中的一系列问题 ,包括洪水分流后的大河泥沙淤积、河道水位变化、对河道防洪功能的影响。