在缆道高悬点、无拉偏条件下开展推移质测验的试验研究

在乌江武隆站高悬点、无拉偏缆道上，从采样器在床面及出入水的稳定性、是否拖刮河床，以及偏离断面等方面对推移质测验的可靠性进行了试验；在此基础上，进一步测试了推移质断面输沙率。试验结果表明，在缆道高悬点、无拉偏条件下，AYT型采样器在中、低水位测验时效果较好，但高洪水位时可靠性难以保证。该成果对指导山区性河道推移质测验有重要意义。

Observation of Bed Load by Using High-Hanging Cableway without Drawing Deflection

With the high-hanging cableway without drawing deflection at Wulong Hydrometric Station on Wujiang River, the reliability of the bed load observation by AYT Sampler was analyzed in the stability of sampler on the surface of the river bed, stability of sampler in and out the water, bed scratching, and deflection from section. Based on the examination, the section transport rate was tested. The results show that the dependability of the AYT Sampler is better under the low and medium water level, but it is not convinced under the high flood water level. The conclusion is significant for guiding the bed load observation in the mountain river channels.