水力插板透水式双丁坝坝头局部冲刷优化试验

发布时间：2018-03-02 06:12

本文关键词： 水力插板透水式双丁坝坝头冲刷丁坝间距挑角透水率丁坝长度正交试验　出处：《水电能源科学》2017年08期 　论文类型：期刊论文

【摘要】：水力插板透水丁坝为一种新型丁坝,丁坝坝头局部冲刷严重危害丁坝的稳定性和安全性,而双丁坝是丁坝群的组成单元,合理的布置和设计双丁坝至关重要。在第一个丁坝布置的情况下,通过改变丁坝间距及第二个丁坝的挑角、透水率、长度进行单因素试验,获得各单因素与第二个丁坝坝头冲刷坑深度的回归方程,再从每组单因素试验结果中选择最佳试验水平,利用L9(34)正交试验设计表设计4因素3水平的正交试验。结果表明,4个单因素对第二个丁坝坝头冲刷坑深度的影响为丁坝间距丁坝长度丁坝透水率丁坝挑角。进而获得以减小丁坝坝头冲刷坑深度为目的的水力插板透水式双丁坝经济合理的设计参数和布置方案为丁坝间距90cm,第一、二个丁坝长度分别为30、25cm,第一、二个丁坝透水率为30%,第一、二个丁坝挑角为60°。
[Abstract]:Hydraulic plug plate permeable spur dike is a new type of spur dike. The local scour of the dike head seriously endangers the stability and safety of the spur dike, and the double spur dike is the component unit of the spur dike group. Reasonable arrangement and design of double spur dikes are very important. In the case of the first spur dike arrangement, single factor tests are carried out by changing the spacing of the spur dike, the angle of the second spur, the permeability and the length of the dike. The regression equations of each single factor and the depth of the second groin head scour pit are obtained, and the optimum test level is selected from each group of single factor test results. The orthogonal tests with 4 factors and 3 levels were designed by using the orthogonal test design table. The results show that the influence of four single factors on the depth of the second groin head scour pit is the angle of the spur dike penetration rate of the dike dike length between the spur dikes and the dike length. The economical and reasonable design parameters and layout scheme of hydraulic plug penetrable double spur dike with the aim of reducing the depth of the scour pit at the dike head are obtained as 90 cm spacing of the spur dike. The length of two groins is 30 ~ 25 cm, the first, the permeability of two groins is 30 and the first, the angle of two groins is 60 掳.
【作者单位】：新疆农业大学水利与土木工程学院;
【基金】：国家自然科学基金项目(51469032) 新疆水利水电工程重点学科基金项目(xjzdxk-2010-02-12) 新疆高校科研计划项目(XJEDU2013I12)
【分类号】：TV863

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