在最近比较长的一段时间中,我们进行了一项关于船闸上下游引航道泥沙淤积问题的试验研究工作。我们面对的条件比较复杂:河流上游的来沙基本上未受到控制,年平均含沙量超过每立方米一公斤;水利枢纽系径流式,无蓄水库容,坝前悬移质淤积,不要几年即达到相对平衡;河段不平直,枢纽位于急湾的下游,河宽、水深、比降、糙率等沿程变化急剧,坝 In the recent relatively long period of time, we conducted a pilot study on sediment deposition in the upstream and downstream navigation channels of the lock. The conditions we face are rather complicated: the incoming and outgoing water from the upper reaches of the river is basically uncontrolled, the annual average sediment concentration exceeds one kilogram per cubic meter; the water conservancy hub is of runoff type with no storage capacity and sediment deposition in front of the dam; A few years to achieve a relative balance; the river is not straight, the junction is located in the downstream of the emergency bay, the river width, water depth, gradient, roughness and other changes along the rapid changes in the dam