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A platform for research: civil engineering, architecture and urbanism
Closure gap vertical closure flow intercepting method
The invention provides a closure gap vertical closure flow intercepting method which is characterized in that after a pre-entering stage, throwing materials falling from a dike head are flatly laid and stacked into a bottom protection stacking body in the range from the dike axis to a downstream slope toe of a transverse cofferdam through water flow driving force, the throwing materials mainly comprise materials with the equivalent sphere diameter D2, and the equivalent sphere diameter D2 is smaller than the equivalent sphere diameter D2; the starting flow velocity of the material is smaller than Va, the stopping flow velocity of the material is larger than Vb, Va is the water flow velocity at the falling position of the throwing material, Vb is the water flow velocity at the end position, close to the downstream, of the set transverse cofferdam, gamma s is the density of the material, gamma is the density of water, and K starting and K stopping are the starting coefficient and the stopping coefficient of the material respectively; g is gravitational acceleration.
本发明提供一种龙口立堵截流方法，其特征在于：在预进占阶段之后，利用水流驱动力，将在戗堤堤头处落下的抛投料平铺堆叠成在戗堤轴线至横向围堰下游坡脚范围内的护底堆积体，所述抛投料主要包括当量球径为D2的材料，所述材料的起动流速小于Va，所述材料的止动流速大于Vb，Va为所述抛投料落下的位置处的水流流速，Vb为在设定的横向围堰靠近下游的端部位置的水流流速，γs为所述材料的密度，γ为水的密度，K起动、K止动分别为所述材料的起动系数、止动系数，g为重力加速度。
Closure gap vertical closure flow intercepting method
The invention provides a closure gap vertical closure flow intercepting method which is characterized in that after a pre-entering stage, throwing materials falling from a dike head are flatly laid and stacked into a bottom protection stacking body in the range from the dike axis to a downstream slope toe of a transverse cofferdam through water flow driving force, the throwing materials mainly comprise materials with the equivalent sphere diameter D2, and the equivalent sphere diameter D2 is smaller than the equivalent sphere diameter D2; the starting flow velocity of the material is smaller than Va, the stopping flow velocity of the material is larger than Vb, Va is the water flow velocity at the falling position of the throwing material, Vb is the water flow velocity at the end position, close to the downstream, of the set transverse cofferdam, gamma s is the density of the material, gamma is the density of water, and K starting and K stopping are the starting coefficient and the stopping coefficient of the material respectively; g is gravitational acceleration.
本发明提供一种龙口立堵截流方法，其特征在于：在预进占阶段之后，利用水流驱动力，将在戗堤堤头处落下的抛投料平铺堆叠成在戗堤轴线至横向围堰下游坡脚范围内的护底堆积体，所述抛投料主要包括当量球径为D2的材料，所述材料的起动流速小于Va，所述材料的止动流速大于Vb，Va为所述抛投料落下的位置处的水流流速，Vb为在设定的横向围堰靠近下游的端部位置的水流流速，γs为所述材料的密度，γ为水的密度，K起动、K止动分别为所述材料的起动系数、止动系数，g为重力加速度。
Closure gap vertical closure flow intercepting method
一种龙口立堵截流方法
ZENG SHAOYUE (author) / YANG SHENG (author) / WANG LIJIE (author) / MIAO BAOGUANG (author) / DAI XIAOBING (author)
2022-07-22
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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