宁夏骨干渠道透固体砌护结构研究

Research of the backbone channel built by laying bricks or stones in the irrigation area of Ningxia

为完善宁夏骨干渠道透固体砌护结构的设计,在总结已建工程透固体砌护结构应用现状的基础上,采用有限单元方法使用二维平面渗流稳定分析程序(Auto BANK)计算渠道透固体砌护方式的渗漏量和渠堤含水入渗量,通过极差和方差分析总结透固体布置位置、宽度和地下水位对渗漏量和入渗量的影响规律,提出透固体布置在圆弧坡脚梯形断面渠道渠底边部,宽度为渠底总宽的10%~20%为宜。

In order to improve design of permeable structure application in the backbone channel build by laying bricks or stones in the irrigation area of Ningxia,this article summarizes the present application situation of solid masonry structure and calculates the leakage and infiltration of the permeable structure with the finite element method using two-dimensional planar seepage stability analysis program(Auto BANK).this paper also analysis the affects of the position,width of permeable structure and the underground water level on seepage and infiltration capacity through the variance and range analysis and puts forward that the permeable structure should be arranged in the edge of bottom of the circular arc trapezoidal cross-section channel and the 10%~20% width of total width of canal bottom is proposed.