新型水文水井管结构设计与优化研究

为解决中深孔水文水井围填滤料的难题,提出一种管内填砾新技术,并重点介绍其核心元器件“一种新型井管投砾结构”的设计原理与过程。通过Fluent多相流分析模型及Ansys静力分析模块,对不同导向弧板坡度及不同井管开孔尺寸的模型进行了砾料填充过程及井管强度的仿真,得出砾料速度及井管最大应力对相关参数的灵敏度曲线。基于仿真结果,拟合出双目标(砾料速度与井管最大应力)对三因素(水平、竖直开孔尺寸和导向弧板的斜坡角度)的CCD响应曲面。最后以砾料速度及最大应力为目标函数,通过满意度函数优化求解新型井管核心元器件的最佳开孔结构及导向弧板的斜坡角度。

Study on Design and Optimization of New Hydrological Well Pipe Structure

In order to solve the problem of filling filter material in medium and deep hole hydrological well,a new technology of filling gravel in pipe is proposed,and the design principle and process of its core component“a new type of well pipe gravel structure”are emphatically introduced.Through the Fluent multiphase flow analysis model and Ansys statics analysis module,the gravel filling process and the strength of the well pipe were simulated for the models with different guide arc plate slopes and different well pipe opening sizes,and the sensitivity curves of the gravel velocity and the maximum stress of the well pipe to the relevant parameters were obtained.Based on the simulation results,the CCD response surface of two indexes(gravel velocity and maximum stress of well pipe)to three factors(horizontal,vertical hole size and slope angle of guide arc plate)is fitted.Finally,with the velocity and maximum stress as the objective functions,the optimal opening structure of the core components of the new well pipe and the slope angle of the guiding arc plate are solved by the satisfaction function optimization.