高流速大粒径漂卵石复杂条件下非通航河道疏浚施工技术研究

Research on Dredging Construction Technology of Non-navigable River under Complex Conditions such as High Velocity and Large Particle Size Boulders and Pebbles

水电开发项目通过拓挖水电站下游河道以增加水头、提高装机容量可以取得良好的经济效益。然而,受河道水文气象、地质条件等现场复杂条件的影响,部分电站下游河道不具备拓挖条件。阐述了大渡河沙坪一级水电站下游河道治理工程,针对高流速、大粒径漂卵石复杂条件下非通航河道疏浚施工技术进行的研究,提出了复杂条件下河道疏浚技术难题的解决思路及方法,所取得的经验可为类似工程疏浚施工提供参考。

In hydropower development projects,good economic benefits can be achieved by the expansion of downstream river channels of hydropower stations to increase water head and increase installed capacity.However,due to complex site conditions such as hydrometeorology and geological strata of river channels,some downstream river channels of hydropower stations do not have the conditions for expansion and excavation.This paper introduces the research on the dredging construction technology of non-navigable river under complex conditions such as high velocity and large particle size boulders and pebbles of the downstream river treatment project of Shaping I Hydropower Station in Dadu River,and puts forward the ideas and methods to solve the technical problems of river dredging under complex conditions,so as to provide reference for similar projects.