Jinan, Shandong Yellow River Embankment Dike Cutting Head Bent Dam Construction Scheme Of Reservoir Engineering

By geographical location and characteristics of the Yellow River is divided into upper, middle and lower three sections, the river length786km, drop94m, the basin area of23,000km2.The Lower Yellow River is in the process of long-term drainage sediment deposition shape formation, the river generally above on both sides of ground, is a watershed in the Haihe and Huaihe River Basin.Both sides of the Yellow River area of about3000acres,is currently China’s largest gravityirrigation. Downstreamflooding of the Yellow River、the amount of sand are reducing along way, river embankment distance and river channel morphology have wide and narrow’s characteristics.In the lower Yellow River37+089-39+789and40+490-44+590two corners,Main channel straight, but the levee had curved, river regime for many years straight and relatively smooth,After cutting the bends help maintain this stable river regime,Avoid the occurrence of floods floodplain (main channel length of only two corners here about1900m and2400m) due to local river width of mutations (by suddenly widened, and then suddenly narrowed, alternating twice) induced by abnormal changes in river regime, and even cause the downstream river potential adverse changes.After the dike cutting the bends, two corners of the dike length2700m and4100m respectively increased from approximately shortened to1868m and2340m,When the big floods of floodplain can be used new embankmen as a defensive focus, which greatly shortens the length of the defense, and the original dike as a second barrier, will greatly improve the degree of flood protection to ensure safety.According to Jinan City, the social and economic development, and create a national water ecological civilization city and ecological needs and socio-economic status, Licheng District,Using Zhang Chu nest embankment cecal embankment cut curved space newly built the levee between the original embankment construction of the settling of the canal,Using Dam head embankment Cecum embankment head cut curved space newly built the levee between the original embankment construction of regulating reservoir.This paper studies its necessity and technical economic feasibility.Licheng District, Jinan City, and by social and economic development, analytical needs of create urban ecological demonstration zones on the water and the stability of the river regime and other aspects,Discusses the necessity of the construction of the reservoir Cecum embankment curved cut;By the width of the cecum embankment of the river, project management, as well as the chance of a major flood on the development and application of local government attitudes Yellow River water resources,Discussing the technical feasibility of the construction of the reservoir at cutting the bends Cecum embankment;Analysis based on water resources and water shortage in Jinan City and the investigation and analysis of the water users,Conduct water supply analysis;By the river the river, the. water, the water conditions analysis,determine the number of days of water,and analysis of the Yellow River water quality;According to the terrain, the water conditions to determine the arrangement of curved cut new embankment, settling basin, Controlling Reservoirs and pumping stations^water culverts and other ancillary buildings the size and layout;engineering tying process and resettlement planning,engineering tying process investment estimates;Through analysis years of different flow of flood level river slipped,respectively analysis effect of the Yellow River is not cut off works of floodplain water、overbank water flow、over the river flow、floodplain flood passage and flood level,and identify measures to eliminate the adverse effects of the project need to be taken;According to the project layout and buildings to invest estimates,by analyzing its effectiveness to economic evaluation,demonstrated economic viability.Through analysis,provide a theoretical basis whether to implement the construction of reservoirs straightening project for the Cecum embankment.