泥石流虹吸排水分流池自清淤能力分析

doi:10.3785/j.issn.1008 973X.2015.11.017

浙江大学学报(工学版)

土木工程

泥石流虹吸排水分流池自清淤能力分析

张文君1,孙红月1,潘攀2,魏振磊2

1.浙江大学海洋学院,浙江杭州 310058；2.浙江大学建筑工程学院,浙江杭州 310058

Analysis on self dredging capability of siphon drainage pool in debris flow

ZHANG Wen jun1, SUN Hong yue1, PAN Pan2, WEI Zhen lei2

1. Ocean College, Zhejiang University, Hangzhou 310058, China ; 2. College of Civil engineering and architecture, Zhejiang University, Hangzhou 310058, China

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摘要：

针对目前泥石流截、排水技术全部采用重力流形式,不仅土石方工程量大、排水效率低,而且泥石流的高挟沙量常常使截排水结构淤积而失效等问题,提出一种具有自清淤能力的水石分离虹吸排水技术.该技术可有效提高泥石流防治的效率和耐久性,虹吸分流池的水动力学特征和清淤能力是该技术能有效实施的基础.应用流体数值软件FLUENT建立三维数值模型,对分流池在虹吸作用下的水力特性进行分析,结果表明：分流池在虹吸作用下产生以虹吸管口为中心的向心速度场；分流池池底切应力与虹吸管径和水头差具有一定的函数关系；虹吸管口至池底面的距离为25%的虹吸管径时池底面的负压水头已具备很强的清淤能力.可以用于指导实际泥石流防治工程的虹吸分流池设计.

Abstract:

The gravity forced technologies are commonly utilized for the cut and drainage of water in debris flows. However, such technologies generally result in large volume of earth works and low draining efficiency. Moreover, large carrying sediments in debris flow often deposit the cut drainage structures. Therefore, a debris flow prevention technology which can separate water from debris flow was proposed. The technology can significantly improve the efficiency of prevention engineering and its durability. For such technologies, the hydrodynamic characteristics of shunt pool and dredging ability are the prerequisite. In the present study, a three dimensional numerical model was proposed to analyze the hydraulic characteristics of the pool under the siphon lift by the FLUENT software. The results reveal that a centriptal velocity field around the siphon pipeis produced due to the effects of siphon in the pool. Besides that, the bed shear stress in the pool is highly associated with the initial siphon head and the siphon pipe diameter. In addition, suction pressure approaches show strong cleansing capacity when the distance from the siphon pipe mouth to the bed is around 25% of the diameter of siphon pipe. The present investigation provides a scientific reference for the design of the siphon pool in the practical debris flow prevention engineering．

出版日期: 2015-11-01

X 43

基金资助:

国家自然科学基金资助项目（41272336）

通讯作者: 孙红月,女,教授.ORCID:0000 0002 2267 305X. E-mail: shy@zju.edu.cn

作者简介: 张文君（1990-）,男,硕士生,主要从事地质灾害防治研究. ORCID:0000 0002 5472 275X.E-mail: 21234020@zju.edu.cn

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引用本文:

张文君,孙红月,潘攀,魏振磊. 泥石流虹吸排水分流池自清淤能力分析[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008 973X.2015.11.017.

ZHANG Wen jun, SUN Hong yue, PAN Pan, WEI Zhen lei.

Analysis on self dredging capability of siphon drainage pool in debris flow. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008 973X.2015.11.017.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008 973X.2015.11.017 或 http://www.zjujournals.com/eng/CN/Y2015/V49/I11/2159

［1］康志成,李焯芬. 中国泥石流研究［M］. 北京：科学出版社,2004:38-41．
［2］费俊祥,舒安平. 泥石流运动机理与灾害防治［M］. 北京：清华大学出版社,2004：248-268．
［3］张盛鲲,彭敏. 汶川地震灾区文家沟特大地质灾害防治引水隧洞设计与动态施工［J］. 岩土钻掘工程,2013,40（3）：71-74．
ZHANG Sheng kun,PENG Min,Design of diversion tunnel for serious geological disaster prevention in wenchuan earthquake area and the dynamic construction ［J］. Exploration Engineering,2013,40(3)： 71-74．
［4］文联勇,谢宇,李东,等. “水石分离”在泥石流灾害防治工程中的应用［J］. 长江科学院院报,2012,29（5）：16-20．
WEN Lian yong,XIE Yu,LI Dong,et al. Separation of stone and water to prevent debris flow ［J］. Journal of Yangtze River Scientific Research Institute,2012,29(5)：1-8．
［5］胡云进,万五,蔡甫款. 窄深矩形断面明渠流速分布的研究［J］. 浙江大学学报:工学版,2008,42（1）：183-186
HU Yun jin,WAN Wu yi,CAI FU kuan,et al. Velocity distribution in narrow and deep rectangular open channels ［J］. Journal of Zhejiang University:Engineering Science, 2008,42(1)：183186．
［6］王福军. 计算流体动力学分析［M］. 北京：清华大学出版社,2006:711,115-116.
［7］李娟,牧振伟,何照清,等. 小洼槽长距离倒虹吸水头损失的数值计算［J］. 南水北调与水利科技,2013,11（5）：70-73．
LI Juan,,MU Zhen wei,HE Zhao qing, et al. Numerical stimulation of head loss of small trough and long distance inverted siphon ［J］. South to North Water Transfers and Water Science ＆Technology, 2013,11(5): 70-73．
［8］ DUFRESNE M,VAZQUEZ J,TERFOUS A, et al. Experimental investigation and CFD modeling of flow, sedimentation, and solids separation in a combined sewer detention tank. ［J］. Computers ＆Fluids 2009, 38(2): 1042-1049．
［9］ CHEN S C, WANG S C. WU C H. Sediment removal efficiency of siphon dredging with wedge type suction head and float tank ［J］. International Journal of Sediment Research, 2010, 25(2): 149-160．
［10］ ZHOU Y C,WANG Y P, CHEN Y M,et al. Experimental study of the performance of a siphon sediment cleansing set in a CSO chamber ［J］. Water Science & Technology, 2013, 68(1): 184-191.
［11］ LI Yu Cheng,LU Lin. Numerical simulation of moving scour boundary and turbulence flow around submarine pipelines ［J］. Journal of Hydrodynamics ：Series B, 2005, 17(4): 404-411．
［12］陈勇民. 承压式合流制溢流深井淤积及清淤技术研究［D］.杭州：浙江大学,2011:94-101．
CHEN Yong min. Study on sedimentation and cleansing technology for pressurized cso deep chamber ［D］. Hangzhou: Zhejiang University, 2011:94-101．
［13］ OMS C,GROMAIRE METZ,M C, et al. Measurement of local bed shear stress in combined sewers ［C］∥Urban Drainage Modeling:Orlando,Florida: ASCE 2001, 507-517．
［14］ FRANKIN E M.,CHARRU F. Morphology and displacement of dunes in a closed conduit flow ［J］. Powder Technology, 2009, 190(1): 247-251．

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