摘要
通过现场施工数据分析、现场观测、中子示踪、ADCP监测、数学及物理模型等多种方法对长江口深水航道治理工程的疏浚抛泥施工工艺进行综合研究,并提出了优化措施。研究结果表明,由于长江口独特的土质和水流特性,全潮时段利用距耙吸船施工区段较近的贮泥坑倾倒疏浚土,不考虑潮位和流速的影响的施工工艺造成各贮泥坑的抛泥流失率较大,通过采取限制各贮泥坑抛泥时段以及贮泥坑位置移动至低流速区等优化措施,能有效降低贮泥坑疏浚弃土的流失以及流失疏浚土对航道回淤的影响。
Through the construction data analysis,site construction,on-site observation,neutron tracer,ADCP monitoring,mathematical and physical models,we carried out a comprehensive research on the silt spoiling technology in the Yangtze Estuary Dredging Project and proposed the optimized scheme.The results show that,due to the special soil and water characteristics of the Yangtze Estuary,the dredged silt is spoiled into the storage pit which is near the construction zone of the cutter suction dredger in all tide time.The technology without consideration of the effects of tide and flow leads to a greater loss of spoiled silt in the pits.By taking the measures including controlling the spoil time and moving the storage pits to the low flow speed areas,we can reduce effectively the loss of spoil silt and the influence of the lost silt on the waterway as well.
出处
《水运工程》
北大核心
2010年第11期75-79,共5页
Port & Waterway Engineering
关键词
长江口
疏浚工程
抛泥施工
工艺优化
the Yangtze Estuary
dredging engineering
silt spoiling
technology optimization
