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In this paper, the causes of mass loss of throwing materials in flood control of the Yellow River were analyzed and the stress analysis model of throwing body in moving water was established with gabion as the research object. Based on the force analysis of gabion, the influence of the velocity and depth of the dangerous section to the stability of the throwing materials was studied. The results show that increasing velocity and water depth can lead to poor stability of the throwing materials in the dynamic water and increasing weight (size) of throwing materials can effectively reduce the displacement and enhance its stability. Finally, some measures are put forward, such as designing a reasonable weight throwing materials, reserving enough throwing distance or using linked gabion system to ensure the stability. [ABSTRACT FROM AUTHOR]

In order to clarify the main causes of the breakage of hind willow-rock during the flood control and emergency rescue of the Yellow River, take measures to avoid the breakage of hind willow-rock and realize the intensification of the Yellow River flood control and emergency rescue, in this paper, taking hind willow-rock,L, the research object, the analysis model of breaking resistance force in moving water was established. The calculation formula of breaking moment of bind willow-rock was deduced,md the maximum stress of bind willow-rock at different velocities was willow-rock. The main reasons for the breakage arc the selection of willow material, the manufacturing technology of bounding, the setting of the rope and the force extended during the hind willow-rock pushing. Using gabion to strength then the hind willow-rock, choosing high quality flexible willow branches, strictly controlling the manufacturing technology, reasonably setting the number and spacing of the rope and even force when pushing the bind willow-rock down can effectively avoid the breakage of the bind willow-rock. [ABSTRACT FROM AUTHOR]