| 摘要: |
| 拟建阿拉尔拦河闸位于新疆塔河干流，本文基于河流动力学理论，分析了蓄水运用后，闸前河段泥沙淤积分布的规律及其内在机理。依据试验观测资料，拦河闸蓄水运用后，闸上游约7.2km以下河段的水流挟沙力趋于减小，并利用15年长系列模型试验结果进行了对比验证，泥沙淤积分布与水力条件变化导致的泥沙淤积结论相符，淤积形态与已有成果接近。经过综合分析，导致闸前景观水域面积减小的淤积部位位于闸前1.2km-2.7m河段，结合清淤技术措施的性能特点和河道本身的实际淤积情况，经过不同清淤设备的性能参数比选，推荐采用泵吸式设备进行清淤工作。 |
| 关键词: 拦河闸，;蓄水，;淤积，;景观水域，;清淤措施 |
| DOI： |
| 分类号:TV149.2 |
| 基金项目: |
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| Discussion on the sediment accumulation features and dredging measures in front of the sluice after water storage of the Alaer Barrage |
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wangpuqing
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Yellow River Institute of Hydraulic Research, YRCC
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| Abstract: |
| The proposed Alaer Barrage is located in the main stream of Tarim River in Xinjiang. Based on the theory of river dynamics, this paper analyzed the sediment accumulation in front of the sluice and its internal mechanism after water storage. According to the observed data, after the barrage retains water, the sediment-carrying capacity of the river about 7.2km below the upstream of the sluice tends to decrease. Compared with the results of 15-year model tests, the sediment accumulation is consistent with that caused by changes in hydraulic conditions, and the siltation feature is close to the existing findings. After comprehensive analysis, the siltation that leads to the reduction of the landscape waters in front of the sluice usually occurs in the river section 1.2km-2.7m away from the sluice. Combined with the features of the dredging technical measures and the actual siltation of the river itself, this paper compared the performance parameters of different dredging equipment, and finally recommended the pump suction type. |
| Key words: barrage, water storage, siltation, landscape waters, dredging measures |
