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甘肃省卓尼县上卓沟曾多次发生较大规模泥石流,灾害损失极其严重。为了有效治理,急需对泥石流的流动特性及拦挡结构在泥石流冲击荷载下的结构响应进行深入研究。本文首先利用图形建模软件RHINO建立上卓沟三维沟谷模型,泥石流流变模型选用宾汉流体模型,在合理确定各计算参数及边界条件的基础上应用CFX对上卓沟泥石流进行了三维数值模拟,得到流速等流场数据。将所得流场数据导入ANSYS进行泥石流与拦挡结构的双向流固耦合分析,得到了泥石流在沟谷内的运动规律及拦砂坝的应力和位移,为工程设计提出了建议,可为类似工程提供参考。
Zhuozhang County, Gansu Province Shang Zhuo ditch have occurred more large-scale debris flow, disaster losses are extremely serious. In order to effectively deal with this problem, it is urgent to study the flow characteristics of debris flow and the structural response of the dam structure under the shock load of debris flow. In this paper, three-dimensional model of Shang Zhuo ditch was established by using RHINO. The Bingham fluid model was selected for the debris flow rheological model. Three-dimensional numerical simulation of Shangxuogou debris flow was carried out by CFX based on the reasonable calculation of parameters and boundary conditions. , Get the flow rate and other flow field data. The flow field data was imported into ANSYS for bidirectional fluid-solid coupling analysis of debris flow and block structure. The movement law of debris flow in the valley and the stress and displacement of the dam were obtained, which provided suggestions for engineering design and could provide references for similar projects .