Shortcomings existed in calculation of the key parameters and design of the check dam structures in the engineering mitigation due to the complex of debris flow process and the immature theory of debris flow.Firstly
the development process for debris flow mitigation and its important function was introduced simply.Secondly
the main achievements and shortcomings were concluded on the basis of the discharge capacity of the spillway
impacting force exerted on the check dam by debris flow
scour depth and embedded depth of foundation
and the stability of a check dam.Finally
the prospect of closed-type check dams was discussed according to the calculation method of key parameters
new types of check dam structure
new development and application of abrasion and erosion resistance materials
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