Open AccessIntegrated flood risk management on sedimentation, course stabilization and spare-course planning in Yellow River Delta
Author(s) -
Yiru Zhang,
Jing Chen,
Bo Huang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/675/1/012032
Subject(s) - sedimentation , river delta , silt , delta , hydrology (agriculture) , flood myth , channel (broadcasting) , sediment , course (navigation) , dike , estuary , environmental science , geology , water resource management , geomorphology , geography , oceanography , archaeology , geotechnical engineering , engineering , geochemistry , electrical engineering , aerospace engineering
The Yellow River Delta as the youngest land of China was originated in 1855, after the river changed its downstream course and emptied into Bohai Sea. Thereafter, the river channel shifted and swayed naturally due to great silt sedimentation in delta area. High silt concentration and sedimentation is the Yellow River’s major characteristic, which dominates the evolution law of the estuary, and lead to river bed rising, tail channel extending, swaying and even course diversion on the end. Dike heightening, enforcing projects and river regulation works have improved the discharging capability of river channel, but the fundamental measures to decrease flood risk in delta are sediment reduction in reservoir, sediment conservation in middle reaches and measures for course stabilization and spare-course planning. The paper gives a comprehensive analysis on water and sediments relationship, evolution process of tail channel, and presents possible solutions on flood risk management.