[1]吴显,汪磊,孙红月.斜孔虹吸排水管内泥沙起动流速方程的推导及应用[J].自然灾害学报,2018,(05):054-62.[doi:10.13577/j.jnd.2018.0507]
 WU Xian,WANG Lei,SUN Hongyue.Derivation and application of formula for sediment incipient velocity in inclined siphon drain pipe[J].,2018,(05):054-62.[doi:10.13577/j.jnd.2018.0507]
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斜孔虹吸排水管内泥沙起动流速方程的推导及应用
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2018年05期
页码:
054-62
栏目:
出版日期:
2018-10-28

文章信息/Info

Title:
Derivation and application of formula for sediment incipient velocity in inclined siphon drain pipe
作者:
吴显1 汪磊2 孙红月1
1. 浙江大学 海洋学院, 浙江 舟山 316000;
2. 浙江大学 建筑工程学院, 浙江 杭州 310058
Author(s):
WU Xian1 WANG Lei2 SUN Hongyue1
1. Ocean College, Zhejiang University, Zhoushan 316000 China;
2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
关键词:
虹吸排水斜孔较大颗粒概率论起动流速
Keywords:
siphon drainage in slopeinclined siphonlarge size sedimentprobability theoryincipient velocity
分类号:
TU42;TV142;X93
DOI:
10.13577/j.jnd.2018.0507
摘要:
边坡虹吸排水是一种新型的坡体排水措施,具有建设费用低、施工速度快等优点,能有效降低坡体的地下水位。对于滑体厚度较大的边坡,可以采用斜孔虹吸方法排出深部地下水。为保证虹吸过程的长期稳定,虹吸管一般采用4 mm内径。鉴于边坡虹吸排水具有间歇性特征,保障管内泥沙尤其是较大粒径的泥沙颗粒能随水流顺利排出是虹吸排水系统工作的基础。论文针对斜孔虹吸排水管中粒径为0.5~1 mm的较大颗粒泥沙的起动进行了研究,分析了泥沙颗粒在虹吸斜管水流中的受力状态并建立了起动模型。应用起动概率理论,对泥沙颗粒的粒径分布进行了分析,推导获得了倾斜虹吸管中大颗粒泥沙的起动流速方程,与经典解析公式及物理模型试验结果进行对比验证了其准确性。并进一步对得到的起动流速方程在实际虹吸排水工程中的应用做了分析与展望。
Abstract:
Siphon drains in slope, a novel slope drainage measure with lower construction cost and higher construction speed, can effectively reduce the slope’s groundwater level. For slopes with large slippery bodies, the Inclined siphon method can be used to drain the deep groundwater. In order to ensure the long-term stability of the siphon process, the diameter of siphon is usually 4mm. In view of the intermittent characteristics of slope siphon drainage, it is the foundation for siphon drainage system to ensure that the sediment, especially the large size sediment in the pipe can be discharged smoothly with the water flow. This paper studied the incipient motion of larger granular sediment with a particle size of 0.5~1 mm in an inclined siphon pipe, And the relative stress state of sediment was analyzed while the incipient model was established. Using the theory of incipient probability, the particle size distribution of sediment was analyzed, and the theoretical formula of the incipient velocity for large size sediment in inclined siphon was obtained by deduction. The accuracy was verified with the classical analytical formula and physical model test results, and the application of the incipient velocity formula in the actual siphon drainage project is analyzed and forecasted.

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相似文献/References:

[1]吴梦萍,孙红月,梅成.边坡虹吸排水孔间距研究[J].自然灾害学报,2017,(02):040.[doi:10.13577/j.jnd.2017.0205]
 WU Mengping,SUN Hongyue,MEI Cheng.Analysis of slope siphon drainage hole spacing[J].,2017,(05):040.[doi:10.13577/j.jnd.2017.0205]

备注/Memo

备注/Memo:
收稿日期:2018-03-20;改回日期:2018-07-02。
基金项目:国家自然科学基金项目(41772276);浙江省重点研发项目(2017C03006)
作者简介:吴显(1992-),男,硕士,主要从事地质灾害防治研究.E-mail:21634050@zju.edu.cn
通讯作者:孙红月(1970-),女,教授,主要从事地质灾害防治,岩土稳定性分析研究.E-mail:shy@zju.edu.cn
更新日期/Last Update: 1900-01-01