Flow-passing-type debris flow blocking dam and dam group
A mud-rock flow and flow-through technology, which is applied in dams, water conservancy projects, sea area projects, etc., can solve the problems of failure of mud-rock flow accumulation pressure and the failure of retaining dams, etc., and achieve the effect of structural safety and convenient dredging
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[0015] The present invention will be described in detail below in combination with specific embodiments.
[0016] Such as figure 1 As shown, the over-flow debris flow retaining dam is composed of a main dam body, an overflow weir, and a discharge tunnel. The overflow weir is located above the main dam body, and several discharge tunnels are arranged at the bottom of the main dam body. , The discharge tunnel flow should meet the following conditions:
[0017] 1. The overflow capacity of the overflow weir and discharge tunnel meets the maximum flow rate of debris flow for the safety of the retaining dam;
[0018] Q 溢 +∑Q 泄 ≥Q max ;
[0019] 2. The discharge flow of the discharge tunnel should be less than the maximum discharge safety flow to ensure the safety of the downstream protection zone;
[0020] ΣQ 泄 ≤Q S ;
[0021] The minimum width of the discharge hole can ensure the maximum particle size of stones in the flow in the ditch and the passage of dredging vehicles ...
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Abstract
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