推移质翻越低坝输移特性的试验研究

TV142.2; 对于山区河流低坝而言,平时淤积在坝前的推移质粗沙可能会在洪水期集中翻越坝顶,形成高强度输沙.本文开展水槽试验,研究推移质粗沙自上游起动、推进、再翻越坝顶后向下游输移的过程,分析了输沙参数的变化特性及数理规律,描述了翻坝输沙模式及运动特征,揭示了输沙规律与河床形态之间的自然联系.取得如下认识:①输沙量随时间大致以幂函数规律增长.②低坝附近区域河床形态终将趋于稳定,上游和下游均形成相对稳定的曲面斜坡淤积体.③在不同的水流强度下推移质翻坝输移模式存在差异.对于一般水流强度工况,上游淤积体曲面斜坡表面泥沙颗粒以滚动或滑动模式起动,推移至接近坝顶位置时再跃移翻坝,后向下游输移;对于更高...

Full description

Saved in:
Bibliographic Details
Published in水科学进展 Vol. 31; no. 3; pp. 356 - 365
Main Authors 晏自立, 徐元, 李丹勋
Format Journal Article
LanguageChinese
Published 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084 30.05.2020
Subjects
推移质
挟沙力
输沙率
输移特性
径流式低坝
河床形态
Online AccessGet full text
ISSN1001-6791
DOI10.14042/j.cnki.32.1309.2020.03.005

Cover

Abstract TV142.2; 对于山区河流低坝而言,平时淤积在坝前的推移质粗沙可能会在洪水期集中翻越坝顶,形成高强度输沙.本文开展水槽试验,研究推移质粗沙自上游起动、推进、再翻越坝顶后向下游输移的过程,分析了输沙参数的变化特性及数理规律,描述了翻坝输沙模式及运动特征,揭示了输沙规律与河床形态之间的自然联系.取得如下认识:①输沙量随时间大致以幂函数规律增长.②低坝附近区域河床形态终将趋于稳定,上游和下游均形成相对稳定的曲面斜坡淤积体.③在不同的水流强度下推移质翻坝输移模式存在差异.对于一般水流强度工况,上游淤积体曲面斜坡表面泥沙颗粒以滚动或滑动模式起动,推移至接近坝顶位置时再跃移翻坝,后向下游输移;对于更高水流强度工况,后期的翻坝输沙模式可能发生显著转变,周期性边壁漩涡成为翻坝输沙的主要动力来源.
AbstractList TV142.2; 对于山区河流低坝而言,平时淤积在坝前的推移质粗沙可能会在洪水期集中翻越坝顶,形成高强度输沙.本文开展水槽试验,研究推移质粗沙自上游起动、推进、再翻越坝顶后向下游输移的过程,分析了输沙参数的变化特性及数理规律,描述了翻坝输沙模式及运动特征,揭示了输沙规律与河床形态之间的自然联系.取得如下认识:①输沙量随时间大致以幂函数规律增长.②低坝附近区域河床形态终将趋于稳定,上游和下游均形成相对稳定的曲面斜坡淤积体.③在不同的水流强度下推移质翻坝输移模式存在差异.对于一般水流强度工况,上游淤积体曲面斜坡表面泥沙颗粒以滚动或滑动模式起动,推移至接近坝顶位置时再跃移翻坝,后向下游输移;对于更高水流强度工况,后期的翻坝输沙模式可能发生显著转变,周期性边壁漩涡成为翻坝输沙的主要动力来源.
Author 晏自立
徐元
李丹勋
AuthorAffiliation 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084
AuthorAffiliation_xml – name: 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084
Author_FL XU Yuan
LI Danxun
YAN Zili
Author_FL_xml – sequence: 1
  fullname: YAN Zili
– sequence: 2
  fullname: XU Yuan
– sequence: 3
  fullname: LI Danxun
Author_xml – sequence: 1
  fullname: 晏自立
– sequence: 2
  fullname: 徐元
– sequence: 3
  fullname: 李丹勋
BookMark eNotj71KA0EURqeIYIx5CsFux3vv7Ow4pQT_IGCjdZjdmZFsZAMuolhZ2CiSRtMIAbtEGxsJSFBfRrPrW7ii1YGvOB9nidWyfuYYW0HgGEJIaylPsl6XC-IoQHMCAg6CA8gaqyMABpHSuMiaed6NAYik0iTqDOaDSTGelS-T4mNWTq8_3wZfo1H5fluNxdXr_GJc3F-Wz8Pvp5vi4a54nC6zBW-Octf8Z4MdbG3ut3aC9t72bmujHeQIKAPUsC69dxGBRQvKURzaKHTeJ6FFiK0hrXRiMRZOkpaoFMZkLTkTRmCNaLDVP--pybzJDjtp_-Q4qx47ee8sPf8NBFHliR8uNVsq
ClassificationCodes TV142.2
ContentType Journal Article
Copyright Copyright © Wanfang Data Co. Ltd. All Rights Reserved.
Copyright_xml – notice: Copyright © Wanfang Data Co. Ltd. All Rights Reserved.
DBID 2B.
4A8
92I
93N
PSX
TCJ
DOI 10.14042/j.cnki.32.1309.2020.03.005
DatabaseName Wanfang Data Journals - Hong Kong
WANFANG Data Centre
Wanfang Data Journals
万方数据期刊 - 香港版
China Online Journals (COJ)
China Online Journals (COJ)
DatabaseTitleList
DeliveryMethod fulltext_linktorsrc
Discipline Geography
DocumentTitle_FL Experimental study on characteristics of bed load transport over low-head, run-of-river dams
EndPage 365
ExternalDocumentID skxjz202003005
GrantInformation_xml – fundername: 国家重点研发计划资助项目; 国家自然科学基金资助项目
  funderid: (2016YFC042308); (51879138)
GroupedDBID -01
2B.
4A8
92H
92I
93N
ABJNI
ACGFS
ALMA_UNASSIGNED_HOLDINGS
CCEZO
CCVFK
CW9
PSX
TCJ
TGT
U1G
U5M
UY8
ID FETCH-LOGICAL-s1015-19085ffe620d1d07e2b4d64effc4d10bda2979cd1b3e52951771b2dd2ea460da3
ISSN 1001-6791
IngestDate Thu May 29 04:03:15 EDT 2025
IsPeerReviewed true
IsScholarly true
Issue 3
Keywords 推移质
挟沙力
输沙率
输移特性
径流式低坝
河床形态
Language Chinese
LinkModel OpenURL
MergedId FETCHMERGED-LOGICAL-s1015-19085ffe620d1d07e2b4d64effc4d10bda2979cd1b3e52951771b2dd2ea460da3
PageCount 10
ParticipantIDs wanfang_journals_skxjz202003005
PublicationCentury 2000
PublicationDate 2020-05-30
PublicationDateYYYYMMDD 2020-05-30
PublicationDate_xml – month: 05
  year: 2020
  text: 2020-05-30
  day: 30
PublicationDecade 2020
PublicationTitle 水科学进展
PublicationTitle_FL Advances in Water Science
PublicationYear 2020
Publisher 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084
Publisher_xml – name: 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084
SSID ssib002257923
ssib023167946
ssj0039382
ssib025872836
ssib051373317
ssib000862358
Score 2.2845337
Snippet TV142.2; 对于山区河流低坝而言,平时淤积在坝前的推移质粗沙可能会在洪水期集中翻越坝顶,形成高强度输沙.本文开展水槽试验,研究推移质粗沙自上游起动、推进、再翻越坝顶后向...
SourceID wanfang
SourceType Aggregation Database
StartPage 356
Title 推移质翻越低坝输移特性的试验研究
URI https://d.wanfangdata.com.cn/periodical/skxjz202003005
Volume 31
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
journalDatabaseRights – providerCode: PRVEBS
  databaseName: EBSCOhost Academic Search Ultimate
  issn: 1001-6791
  databaseCode: ABDBF
  dateStart: 20160701
  customDbUrl: https://search.ebscohost.com/login.aspx?authtype=ip,shib&custid=s3936755&profile=ehost&defaultdb=asn
  isFulltext: true
  dateEnd: 99991231
  titleUrlDefault: https://search.ebscohost.com/direct.asp?db=asn
  omitProxy: true
  ssIdentifier: ssib025872836
  providerName: EBSCOhost
link http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnR1Na9RAdKgtqBfxE78t6BxTJzP5mDlmulmLoKcWeitJZqJtYQW3BenJgxdFelEPCgVvrV68SEGK-me0u_4L35tksylW_IAQZt-89-Z9bPJe5pOQG9KY3OQF83B3Ly9QpfEyGwnP54VflCrKcjd6fuduNLcQ3F4MFyeOvG7NWlpfy2eKjUPXlfyPVwEGfsVVsv_g2YYpAKAM_oU7eBjuf-VjmkZUpjSRNI1pElOtaSqpDmqI7o4ggJbQNKC6g_hpSFUHL6xKqRIt8phKRbVynBkCAaISKgNETrpUhTRVNAHIrKNiVAWuAFRRO9NFDpqhMBVz5WO7SYcmkWsXWGmEaJ9W51-i25FIKSq7iCJjbAepNZV6jBI6oRkWJFziAHGlIGgqnRZQ3xDXfRu8GpZnzb_RSSqRF6KPLJQETvtG5EYbKHAU8hC1XLNI3iADQ4m2aRsDDKZdWxo4hI6PRDHRLRpdhAxTdBpYGowAIqFbeK0QVKm05QQHAWm5KwNExU6ShCazAMSRlep4vDr24Oy2KK4OLxsFpzpELrf7LlykEWHUSlpEdeDGL_EwgHeyC4hFb3V5RnA8_BuXZ3FWbe0bjtOAZnJmf_XRygaiMOF2B57iEDDZJJlKdEd3D3wLi9aQOgSG9l6UHLdYUOO-Bh7KGFLZ5nfoCzwutOkdEUrIampCbYWj5PpIg5u_l9-tteuVWe9eKy2cP0lO1N9z00n1cJ4iExv3T5Njt2y9E_wZwvY3dwbbe8OPO4Ove8PdZ98-b37f2hp-eQHAwdNP-4-3B2-eDD-8-vH--eDty8G73bNkoZvOz8559TElXh_iWehBSi3DsrRgJOMbFlueByYKbFkWgfFZbjKuYlUYPxcWh9X9OPZzbgy3WRAxk4lzZLL3oGfPk2nBIZv2C4v7PACDIGOFENL4tuCF5VZcINdqbZfq11B_6aC7Lv4R4xI5Pn7ULpPJtYfr9gok1mv51drFPwGbdpMc
linkProvider EBSCOhost
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=%E6%8E%A8%E7%A7%BB%E8%B4%A8%E7%BF%BB%E8%B6%8A%E4%BD%8E%E5%9D%9D%E8%BE%93%E7%A7%BB%E7%89%B9%E6%80%A7%E7%9A%84%E8%AF%95%E9%AA%8C%E7%A0%94%E7%A9%B6&rft.jtitle=%E6%B0%B4%E7%A7%91%E5%AD%A6%E8%BF%9B%E5%B1%95&rft.au=%E6%99%8F%E8%87%AA%E7%AB%8B&rft.au=%E5%BE%90%E5%85%83&rft.au=%E6%9D%8E%E4%B8%B9%E5%8B%8B&rft.date=2020-05-30&rft.pub=%E6%B8%85%E5%8D%8E%E5%A4%A7%E5%AD%A6%E6%B0%B4%E6%B2%99%E7%A7%91%E5%AD%A6%E4%B8%8E%E6%B0%B4%E5%88%A9%E6%B0%B4%E7%94%B5%E5%B7%A5%E7%A8%8B%E5%9B%BD%E5%AE%B6%E9%87%8D%E7%82%B9%E5%AE%9E%E9%AA%8C%E5%AE%A4%2C%E5%8C%97%E4%BA%AC%2C100084&rft.issn=1001-6791&rft.volume=31&rft.issue=3&rft.spage=356&rft.epage=365&rft_id=info:doi/10.14042%2Fj.cnki.32.1309.2020.03.005&rft.externalDocID=skxjz202003005
thumbnail_s http://utb.summon.serialssolutions.com/2.0.0/image/custom?url=http%3A%2F%2Fwww.wanfangdata.com.cn%2Fimages%2FPeriodicalImages%2Fskxjz%2Fskxjz.jpg