Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Calculating and describing method for dual-structure riverbank collapse-retreat mode
The invention discloses a calculating and describing method for a dual-structure riverbank collapse-retreat mode. The calculating and describing method comprises the steps: 1, initial parameters of ariverbank are calculated, and basic parameters such as section water level data and soil body characteristics are analyzed; 2, according to the critical moment balance state of an upper cohesive soillayer, the critical collapse width of the upper cohesive soil layer is defined; 3, according to the erosion width of low-layer cohesionless soil, the condition, the scale and the collapse-retreat process formed by collapse of the upper cohesive soil layer around the axis are judged; 4, according to the relation between the layer thickness ratio and the bank slope gradient, the bank slope accumulation mode of a collapse body is defined, and the protection effect of the collapse body is considered through different modes; and 5, when the collapse body is decomposed under the effect of a water flow and after accumulations on the slope surface are carried to the downstream, the next erosion process is executed. The collapse process can be dynamically simulated and is more identical with the reality, and the calculation result can provide the scientific basis and the technical support for bank collapse prediction and early warning.
本发明公开了一种二元结构河岸崩退模式的计算和描述方法，包括：步骤1、计算河岸初始参数，分析断面水位资料，土体特性等基本参数；步骤2、根据上部粘性土层的临界力矩平衡状态界定其临界崩塌宽度；步骤3、根据下层非粘性土侵蚀宽度，判断上部粘性土层发生绕轴崩塌形成的条件、规模和崩退过程；步骤4、根据层厚比与岸坡坡度关系界定崩塌体岸坡堆积形式，并分别采用不同的模式考虑崩塌体的防护作用；步骤5、当崩塌体在水流的作用下分解且坡面上堆积物被挟带至下游后，进入下个侵蚀过程。本发明可以对崩塌过程进行动态模拟，与实际更为吻合，且计算结果可以为崩岸预测及预警提供科学依据和技术支撑。
Calculating and describing method for dual-structure riverbank collapse-retreat mode
The invention discloses a calculating and describing method for a dual-structure riverbank collapse-retreat mode. The calculating and describing method comprises the steps: 1, initial parameters of ariverbank are calculated, and basic parameters such as section water level data and soil body characteristics are analyzed; 2, according to the critical moment balance state of an upper cohesive soillayer, the critical collapse width of the upper cohesive soil layer is defined; 3, according to the erosion width of low-layer cohesionless soil, the condition, the scale and the collapse-retreat process formed by collapse of the upper cohesive soil layer around the axis are judged; 4, according to the relation between the layer thickness ratio and the bank slope gradient, the bank slope accumulation mode of a collapse body is defined, and the protection effect of the collapse body is considered through different modes; and 5, when the collapse body is decomposed under the effect of a water flow and after accumulations on the slope surface are carried to the downstream, the next erosion process is executed. The collapse process can be dynamically simulated and is more identical with the reality, and the calculation result can provide the scientific basis and the technical support for bank collapse prediction and early warning.
本发明公开了一种二元结构河岸崩退模式的计算和描述方法，包括：步骤1、计算河岸初始参数，分析断面水位资料，土体特性等基本参数；步骤2、根据上部粘性土层的临界力矩平衡状态界定其临界崩塌宽度；步骤3、根据下层非粘性土侵蚀宽度，判断上部粘性土层发生绕轴崩塌形成的条件、规模和崩退过程；步骤4、根据层厚比与岸坡坡度关系界定崩塌体岸坡堆积形式，并分别采用不同的模式考虑崩塌体的防护作用；步骤5、当崩塌体在水流的作用下分解且坡面上堆积物被挟带至下游后，进入下个侵蚀过程。本发明可以对崩塌过程进行动态模拟，与实际更为吻合，且计算结果可以为崩岸预测及预警提供科学依据和技术支撑。
Calculating and describing method for dual-structure riverbank collapse-retreat mode
一种二元结构河岸崩退模式的计算和描述方法
YU MINGHUI (Autor:in) / HU PENG (Autor:in) / XIE YAGUANG (Autor:in)
18.08.2020
Patent
Elektronische Ressource
Chinesisch
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