Dalinghe Xizhi River Regulation Project Design

Traditional river regulation is the primary goal of flood prevention,mainly including dredging and dredging,hard material masonry,etc.ignoring the ecological nature of the river,and the river and surrounding ecological environment are easily destroyed.Ecological river management is based on flood control safety and follows the design concept of "ecology,humanism and environmental protection" to create a harmonious symbiosis space for people,rivers,culture and ecology.Ecological river management is an effective means to build a good water environment system,and it is also a trend of future river management.This paper first introduces the concept,principle and application of river ecological management,and puts forward the key points of modern river ecological management;then introduces several types of engineering application of ecological dredging and ecological slope protection,and provides specific technical support for river ecological management construction;Finally,from the project overview,meteorological hydrology,engineering geology,engineering tasks and scale,engineering layout and major buildings,engineering design calculations,etc.,the river regulation project of Dalinghe Xizhi River in Lingyuan City is introduced in detail,which is the ecological river channel construction in Liaoning Province.Provides reference.The Dalinghe West Branch Control Project is located in Songzhangzi Town,Lingyuan City.The flood control standard for the river section is once in 10 years,and the designed flood peak flow is 556m3/s.The main construction contents of the project include 2 items,namely 2.443km of river dredging and dredging(including 1 garbage cleaning),bank slope remediation and restoration of 4.774km.The design of the bank slope side water slope is 1:2.5,the bank top width is 3.0m,and the back water side slope is 1:2.The shore of the bank slope is protected by stone cages:1.6×1.5m,1.3×1.0m,1.0×1.0m,1.3×1.5m stone cages are placed at a height of 0.3m,and 300g/m2 geotextile is laid in the lower part of the stone cage.Filter.The depth of the stone cage is 1.5m below the design of the river bottom.In the process of dredging and dredging,combined with the current situation of the shore foot elevation,the depth of the stone cage is 1.5?2.5m,that is,the soil before the wall is 1.5?2.5m thick,the wall The height of the rear bank slope is 0.5?2.0m.In order to further stabilize the bank slope and at the same time improve the ecological nature of the river channel,this design will plant cotton aphid in the area of the side slope of the water side and the side of the water side,and solidify the soil.The seedlings require more than 6 branches,the crown is full,the plant spacing is 0.5×0.5m,and the planting shape is planted.The planting hole size is 30cm deep and 30cm in diameter.