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窝崩是发生在长江中下游极具危险性的崩岸形式,严重时会造成生命及财产的重大损失,因此,有必要对窝崩成因及抢护措施进行研究.根据三江口窝崩前后的河道实测地形资料,分析比较了崩塌前后河床地形及断面变化、崩岸发生的原因,计算了各测次的水下体积,研究了相关抢护措施及效果.分析研究结果表明,窝崩发生后80%以上的崩体均淤积在口门上下约1 km河道内,经过1个月冲刷,约有37%崩体被水流带走.文中介绍的抢护措施及效果可为相似抢护工程提供借鉴参考.
The nest collapses occurred in the extremely dangerous collapsible bank in the middle and lower reaches of the Yangtze River, causing serious loss of life and property when it is serious. Therefore, it is necessary to study the cause of collapsing and the measures of grab and rescue. According to the measured terrain data of the river, the change of topography and section of the riverbed before and after the collapse and the reason of bank collapse were analyzed and compared, and the underwater volume of each survey was calculated, and the relative measures and effects of the measures were researched.The analysis results show that after the collapse More than 80% of the collapsing bodies were deposited in the 1 km channel above and below the door, and about 37% of the collapses were washed away by water after 1 month of erosion.The measures and effects described in the article can be provided for similar projects Reference for reference.