Article(id=1301938731196371763, tenantId=1146029695717560320, journalId=1301849983571558468, issueId=1301938707137848028, articleNumber=null, orderNo=null, doi=10.14027/j.issn.1000-0550.2025.011, pmid=null, cstr=32268.14/j.cjxb.62-1038.2025.011, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1730736000000, receivedDateStr=2024-11-05, revisedDate=1742054400000, revisedDateStr=2025-03-16, acceptedDate=1746979200000, acceptedDateStr=2025-05-12, onlineDate=1788335982369, onlineDateStr=2026-09-02, pubDate=1786291200000, pubDateStr=2026-08-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1788335982369, onlineIssueDateStr=2026-09-02, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1788335982369, creator=13701087609, updateTime=1788335982369, updator=13701087609, issue=Issue{id=1301938707137848028, tenantId=1146029695717560320, journalId=1301849983571558468, year='2026', volume='44', issue='4', pageStart='1215', pageEnd='1587', issueExtLink='null', onlineDate='null', pubDate='1786291200000', pubDateStr='2026-08-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1788335976633, creator='13701087609', updateTime=1788405108360, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1302228666671460469, tenantId=1146029695717560320, journalId=1301849983571558468, issueId=1301938707137848028, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1302228666671460470, tenantId=1146029695717560320, journalId=1301849983571558468, issueId=1301938707137848028, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1426, endPage=1441, ext={EN=ArticleExt(id=1301938731397698356, articleId=1301938731196371763, tenantId=1146029695717560320, journalId=1301849983571558468, language=EN, title=Sedimentary Evolution and Architecture in Sandy Braided Rivers with Different Discharge: Insights from sedimentary numerical simulation, columnId=null, journalTitle=Acta Sedimentologica Sinica, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Objective The discharge rate regulates the sedimentary evolution and morphological scale of a braided river. In this study, the influence of discharge rate on the formation of braided channels, bars and internal sedimentary architecture is systematically analyzed for the first time. Methods Five groups of three-dimensional sedimentary numerical simulation experiments with different flow rates were carried out using Delft3D software to explore the evolution, morphological patterns and scale differences of braided channels and bars formed as a result of various flow rates. The models reproduce the internal architectural patterns of a range of bars developed in braided rivers with different flow rates and summarize the sedimentary characteristics and evolution of sandy braided rivers. Results (1) The rate of discharge is positively correlated with the sedimentary evolution of braided rivers. Low-discharge braided rivers exhibit limited evolution, in which bars mainly tend to migrate vertically and are less dissected by channels. By contrast, high-discharge braided rivers undergo intensive evolution, characterized by lateral migration and frequent dynamic equilibrium processes involving compound bars and dissection. (2) The discharge rate influences the plane pattern and channel depth of braided channels. As discharge increases, the braided channel becomes wider and deeper, resulting in a reduced overall number of channels but more highly developed chutes of the channel bars. Lower-discharge braided channels are shallower and primarily consist of numerous narrow, relatively fixed interwoven river networks. (3) Discharge further governs the co-evolution of channels and bars. Greater discharge enhances bar complexity, promoting the development of large complex compound bars and side bars with intricate internal stacking relationships and more frequent chutes. (4) Despite strong spatial heterogeneity in the internal architecture of channel bars in sandy braided rivers, consistent patterns emerge: all bars develop downstream accretions (DA) in the core, vertical accretions (VA) layered above, and lateral accretions (LA) deposited at the sides. A key distinction lies in the increased proportion of LA at higher discharge conditions. (5) Discharge correlates positively with accretion size but inversely with aspect ratio and flakiness ratio. Median aspect ratios of bars are 3.5 in low-discharge systems versus 4.5 in high-discharge systems. Conclusions The study proposes a positive correlation between discharge and the scale of channel bars and accretions in sandy braided rivers. This clarifies flow-controlled sedimentary characteristics and scale variations, providing a basis for analyzing complex subsurface reservoir architectures.
, authors=Ying GUO
1, 2, Kui CHEN
2, QingSong GAO
2, GuangLei REN
2, ShaoHua LI
1, WenJie FENG
1, LinSong LIU
2, Hui RAN
2, authorsList=Ying GUO, Kui CHEN, QingSong GAO, GuangLei REN, ShaoHua LI, WenJie FENG, LinSong LIU, Hui RAN, authorCompany=null, correspAuthors=ShaoHua LI, authorNote=null, correspAuthorsNote=
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1301938731729048373, articleId=1301938731196371763, tenantId=1146029695717560320, journalId=1301849983571558468, language=CN, title=不同流量砂质辫状河沉积演化与构型差异解析, columnId=null, journalTitle=沉积学报, columnName=, runingTitle=null, highlight=null, articleAbstract=
目的 辫状河的沉积演化、形态及规模,受流量这一关键因素的影响,但目前尚未系统分析其对辫状水道、心滩及内部结构的影响程度。 方法 采用Delft3D软件通过5组不同流量三维沉积数值模拟实验,探究不同流量下辫状水道、心滩的演化、形态样式及规模差异,再现不同流量辫状河多沉积类型砂坝内部叠置样式和构型特征,总结砂质辫状河沉积特征和演化规律。 结果 (1)流量与辫状河的沉积演化速率成正比。低流量辫状河演化程度低,砂坝以向下迁移为主,不易被河道分割;而高流量辫状河演化程度高,砂坝以侧向迁移为主,心滩合并、被分割的动态平衡过程较普遍。(2)流量是决定辫状水道平面样式和水深的主导因素。流量越大,河道越宽、直、深,分岔少,演化成熟阶段辫状水道网络复杂;而流量较小的辫状河河道,河道水浅、窄、分岔多,演化成熟阶段辫状水道以相对固定的交织河网为主。(3)流量进一步影响辫状水道和心滩的协同演化过程。流量越大,心滩样式更复杂,出现规模较大的复合改造坝和河边滩,其内部叠切关系更复杂,更易发育窜沟。(4)虽然砂质辫状河心滩内部结构具有很强的空间变异性,但仍存在相似点。相同点在于自下而上均发育顺流加积体、侧积体、垂向加积体,不同点在于流量越大,心滩内部侧积体占比增加。(5)流量与增生体规模呈正相关关系,但与长宽比、长厚比呈负相关关系,其中低流量辫状河心滩长宽比中位数为3.5,高流量辫状河心滩长宽比为4.5。 结论 该研究提出了流量与砂质辫状河的心滩及内部增生体的规模成正比的观点,明确了砂质辫状河受流量影响沉积特征和规模差异,为地下复杂储层构型解剖提供依据。
, authors=郭颖
1, 2, 陈奎
2, 高青松
2, 任广磊
2, 李少华
1, 冯文杰
1, 刘林松
2, 冉辉
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83(11): 1033-1046., articleTitle=Morphological and stratigraphical signature of floods in a braided gravel-bed river revealed from flume experiments, refAbstract=null)], funds=[Fund(id=1307264070982332601, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, awardId=P23031, language=EN, fundingSource=Science and Technology Research Project of SINOPEC(P23031), fundOrder=null, country=null), Fund(id=1307264071049441466, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, awardId=P23031, language=CN, fundingSource=中国石化科技攻关项目(P23031), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1307264061696143452, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, xref=1., ext=[AuthorCompanyExt(id=1307264061704532061, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, companyId=1307264061696143452, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.中国石化华北油气分公司勘探开发研究院,郑州 450006)])], figs=[ArticleFig(id=1307264066251157653, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.1, caption=
Grid and initial water depths for numerical simulation of sandy braided rivers, figureFileSmall=woWzAb4ysJOa8NmbYI5ATA==, figureFileBig=TJ+0ZXTd8DsrYYEmKwtEOw==, tableContent=null), ArticleFig(id=1307264066314072214, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图1, caption=
砂质辫状河模拟网格与初始水深分布, figureFileSmall=woWzAb4ysJOa8NmbYI5ATA==, figureFileBig=TJ+0ZXTd8DsrYYEmKwtEOw==, tableContent=null), ArticleFig(id=1307264066477650071, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.2, caption=
Comparision of sedimentary evolution in high⁃and low⁃discharge sandy braided rivers(a-c) low-discharge rivers at steps 1 510, 3 250 and 3 890; (d-f) high-discharge rivers at steps 600, 810 and 1 100
, figureFileSmall=JNf8vnv0knjOfSnHLaHDPQ==, figureFileBig=QXsiC5nXImkaIgA6UVIjQg==, tableContent=null), ArticleFig(id=1307264066561536152, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图2, caption=
高、低流量砂质辫状河演化过程对比(a~c)低流量(D=5 000 m3/s)第1 510、3 250、3 890步长下低流量砂质辫状河沉积地貌图;(d~f)高流量(D=40 000 m3/s)第600、810、1 100步长下高流量砂质辫状河沉积地貌图
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Comparision of Channel bar evolution model in high⁃and low⁃discharge sandy braided river evolution (Guo et al., 2023)(a-c) low discharge; (d-f) high discharge
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高、低流量砂质辫状河心滩演化模式对比(Guo et al.,2023)(a~c)低流量;(d~f)高流量
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Trend in sandbar size evolution during the evolution of sandy braided rivers under different discharge conditions(a) average length; (b) average width; (c) average aspect ratio; (d) average area
, figureFileSmall=hoaCdy43MRg+Kt80Odn8Vg==, figureFileBig=BFWS5sbhdKI2S6EminNHIQ==, tableContent=null), ArticleFig(id=1307264068461555868, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图4, caption=
不同流量下砂质辫状河演化过程中砂坝规模演变趋势(a)平均坝长;(b)平均坝宽;(c)平均长宽比;(d)平均面积
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Simulated profiles of sandy braided rivers at different discharge conditions, figureFileSmall=2x7eTrSmT+SI6uq/4wMr8w==, figureFileBig=md+ybwyFzVWn7aiHS81Q1w==, tableContent=null), ArticleFig(id=1307264068625133726, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图5, caption=
不同流量条件对照模拟组砂质辫状河剖面(a)剖面位置:x=60 km,y=0~3.2 km;步长=3 800;D=5 000 m3/s;(b)剖面位置:x=60 km,y=0~3.2 km;步长=3 800;D=10 000 m3/s;(c)剖面位置:x=60 km,y=0~3.2 km;步长=3 800;D=20 000 m3/s;(d)剖面位置:x=60 km,y=0~3.2 km;步长=3 800;D=40 000 m3/s;(e)剖面位置:x=60 km,y=0~3.2 km;步长=3 800;D=80 000 m3/s
, figureFileSmall=2x7eTrSmT+SI6uq/4wMr8w==, figureFileBig=md+ybwyFzVWn7aiHS81Q1w==, tableContent=null), ArticleFig(id=1307264068700631199, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.6, caption=
Analysis diagrams of braided channels at different discharge mature stages(a) sedimentary water depth; (b) number, curvature and bifurcation coefficient of braided channels
, figureFileSmall=sK7x/kAfqWBLoeZwU8FKUg==, figureFileBig=47llEX/7useCg2ENhdC+xQ==, tableContent=null), ArticleFig(id=1307264068759351456, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图6, caption=
不同流量成熟时期辫状水道分析图(a)沉积水深;(b)辫状水道数量、弯度及分岔系数
, figureFileSmall=sK7x/kAfqWBLoeZwU8FKUg==, figureFileBig=47llEX/7useCg2ENhdC+xQ==, tableContent=null), ArticleFig(id=1307264068851626145, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.7, caption=
Depositional geomorphology at mature stages of simulated sandy braided rivers under different discharge, figureFileSmall=BPkk4zaXNQ6JoVCv70hBnQ==, figureFileBig=I6dGbHnINCNDoP1NIVpGcA==, tableContent=null), ArticleFig(id=1307264068935512226, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图7, caption=
不同流量下模拟砂质辫状河演化成熟时期沉积地貌图(a,a’)D=5 000 m3/s,步长:3 890;(b,b’)D=10 000 m3/s,步长:2 990;(c,c’)D=20 000 m3/s,步长:1 500;(d,d’)D=40 000 m3/s,步长:1 100;(e,e’)D=80 000 m3/s,步长:880
, figureFileSmall=BPkk4zaXNQ6JoVCv70hBnQ==, figureFileBig=I6dGbHnINCNDoP1NIVpGcA==, tableContent=null), ArticleFig(id=1307264069006815395, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.8, caption=
Sandbar parameters at mature stages for different discharge(a) distribution of area proportion for different types of sandbars; (b) distribution of aspect ratios for different types of sandbars
, figureFileSmall=K9wadxv48ea97xNA9+R5kw==, figureFileBig=wT46SbzI1ve4i4C0tgwj+g==, tableContent=null), ArticleFig(id=1307264069069729956, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图8, caption=
不同流量成熟时期砂坝参数(a)不同类型砂坝面积占比分布图;(b)不同类型砂坝长宽比分布图
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Distribution of sedimentary microfacies at mature stages for simulated sandy braided rivers in different flows, figureFileSmall=7T/7rNPSEFKRhy3qoAKmeg==, figureFileBig=pTAqviH89acMwbf/OmyRNQ==, tableContent=null), ArticleFig(id=1307264069312999590, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图9, caption=
不同流量下模拟砂质辫状河演化成熟阶段沉积微相分布图(a)D=5 000 m3/s,步长:3 730;(b)D=10 000 m3/s,步长:2 850;(c)D=20 000 m3/s,步长:1 345;(d)D=40 000 m3/s,步长:940;(e)D=80 000 m3/s,步长:880
, figureFileSmall=7T/7rNPSEFKRhy3qoAKmeg==, figureFileBig=pTAqviH89acMwbf/OmyRNQ==, tableContent=null), ArticleFig(id=1307264069396885671, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.10, caption=
Sedimentary architecture of unit bar developed with low discharge braided river at mature stages(a) transverse section; (b) longitudinal section
, figureFileSmall=yrj3btJHb7VgVxbpmr4v6w==, figureFileBig=m7wUgCsMRnekzBI+Wbnu5A==, tableContent=null), ArticleFig(id=1307264069497548968, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图10, caption=
低流量辫状河演化成熟阶段单元坝沉积构型(a)切物源方向剖面;(b)顺物源方向剖面
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Sedimentary architecture of unit bar developed with high discharge braided river at mature stages(a) longitudinal section AA΄; (b) longitudinal section CC΄; (c) plan view of the sandbar; (d) water flow mode
, figureFileSmall=TmTYka16E0oofEZuPXQzkQ==, figureFileBig=j8ndQAhLAI++WSEwRxnGrA==, tableContent=null), ArticleFig(id=1307264069690486954, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图11, caption=
高流量辫状河演化成熟阶段单元坝沉积构型(a)顺物源方向剖面AA’;(b)顺物源方向剖面CC’;(c)平面分布图;(d)水流模式;①~⑨不同期次增生体
, figureFileSmall=TmTYka16E0oofEZuPXQzkQ==, figureFileBig=j8ndQAhLAI++WSEwRxnGrA==, tableContent=null), ArticleFig(id=1307264069774373035, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.12, caption=
Sedimentary architecture of compound bar developed with low discharge braided river at mature stages(a) transverse section AA΄; (b) transverse section BB΄; (c) longitudinal section CC΄; (d) plan view of the sandbar;①-⑤ represents different stages of accretions
, figureFileSmall=o09hoojyyyjvwnk0pkgOYw==, figureFileBig=IlQpmiEMo4Q5wJjc/EHtgQ==, tableContent=null), ArticleFig(id=1307264069854064812, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图12, caption=
低流量辫状河演化成熟阶段复合坝沉积构型(a,b)切物源方向剖面AA’、BB’;(c)顺物源方向剖面CC’;(d)平面分布图;①~⑤不同期次增生体
, figureFileSmall=o09hoojyyyjvwnk0pkgOYw==, figureFileBig=IlQpmiEMo4Q5wJjc/EHtgQ==, tableContent=null), ArticleFig(id=1307264069933756589, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.13, caption=
Sedimentary architecture of compound bar developed with high discharge braided river at mature stages(a) transverse section AA΄; (b) transverse section BB΄; (c) transverse section CC΄; (d) longitudinal section DD΄; (e) plan view of the sandbar;①-⑩ represents different stages of accretions
, figureFileSmall=wBSIFUUlJGuzgsupdQtUlQ==, figureFileBig=4F2o0misrcMY4UPgJ5cHDQ==, tableContent=null), ArticleFig(id=1307264070017642670, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图13, caption=
高流量辫状河演化成熟阶段复合坝沉积构型(a~c)切物源方向剖面AA’、BB’、CC’;(d)顺物源方向剖面DD’;(e)为平面分布图;①~⑩不同期次增生体
, figureFileSmall=wBSIFUUlJGuzgsupdQtUlQ==, figureFileBig=4F2o0misrcMY4UPgJ5cHDQ==, tableContent=null), ArticleFig(id=1307264070097334447, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.14, caption=
Comparison of sedimentary architecture scale parameters in unit bar and compound bar of high⁃and low⁃discharge braided river(a) dip angle; (b) length; (c) width; (d) thickness
, figureFileSmall=6gmCTldywxAIVY/gpQ5Vug==, figureFileBig=XRk3vl2jGZXMbiC7yLjJaA==, tableContent=null), ArticleFig(id=1307264070181220528, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图14, caption=
高、低流量辫状河单元坝、复合坝沉积构型规模参数对比(a)倾角;(b)高度;(c)长度;(d)宽度
, figureFileSmall=6gmCTldywxAIVY/gpQ5Vug==, figureFileBig=XRk3vl2jGZXMbiC7yLjJaA==, tableContent=null), ArticleFig(id=1307264070273495217, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.15, caption=
Comparison of sedimentary architecture between highdischarge braided river sandbar and rock outcrop(a) plan view of sandbar; (b) transverse section CC’; (c1, c2) field outcrop section and dissection diagram
, figureFileSmall=v74jvTouXH8RYl3rq0FWDA==, figureFileBig=Mbk3NEkdp/+uBDpq+WulqA==, tableContent=null), ArticleFig(id=1307264070348992690, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图15, caption=
高流量辫状河单元坝与野外露头沉积构型对比(a)高流量辫状河单元坝平面图;(b)切物源剖面CC’;(c1,c2)野外露头剖面及解剖图
, figureFileSmall=v74jvTouXH8RYl3rq0FWDA==, figureFileBig=Mbk3NEkdp/+uBDpq+WulqA==, tableContent=null), ArticleFig(id=1307264070416101555, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Fig.16, caption=
Comparison of sedimentary architecture between high⁃discharge braided river sandbar and drill core data(a) transverse section; (b) longitudinal source profile; (c) underground wells at different locations
, figureFileSmall=xeIN2eIQJGjXtKzc1VbQSA==, figureFileBig=Xjkcv+YlJWaEVxjgBju4hg==, tableContent=null), ArticleFig(id=1307264070495793332, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=图16, caption=
高流量辫状河单元坝与井下实钻案例沉积构型对比(a,b)辫状河单元坝顺物源和切物源剖面图;(c)不同位置与井下对比
, figureFileSmall=xeIN2eIQJGjXtKzc1VbQSA==, figureFileBig=Xjkcv+YlJWaEVxjgBju4hg==, tableContent=null), ArticleFig(id=1307264070583873717, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Table 1, caption=
Hydrological parameter survey of sandy braided river (modified from Liu et al., 2024)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 河流 | 位置 | 水文站 | 平均洪峰流量m3/s | 河道宽度/m | 宽度测量坐标 | 等效流量m2/s |
|---|
| 1 | 亚马孙河 | 巴西 | Santo Antonio Do Ica | 68 192.99 | 10 532 | 59°42'48" W,3°2'52" S | 6.47 |
| 2 | 巴拉那河 | 阿根廷 | Corrientes | 21 917.69 | 1 722 | 63°13'51" W,23°47'27" S | 12.73 |
| 3 | 马更些河 | 加拿大 | Norman Wells | 18 130.55 | 2 811 | 111°32'40" W,59°26'18" N | 6.45 |
| 4 | 贾木纳河 | 印度 | Bahadurabad | 50 531.08 | 3 140 | 84°38'41" E,25°19'54" N | 16.09 |
| 5 | 恒河 | 印度 | Farakka | 44 419.30 | 5 136 | 80°29'20" E,18°0'28" N | 8.65 |
| 6 | Rakaia river | 新西兰 | Fighting Hill | 398.31 | 606 | 168°18'23" E,45°55'10" N | 0.66 |
| 7 | 育空河 | 美国 | Ruby, Alas | 12 966.21 | 4 914 | 131°5'29" W,67°3'4" N | 2.64 |
| 8 | 维斯瓦河 | 波兰 | Warsaw | 1 151.13 | 1 350 | 20°21'18" E,52°22'20" N | 0.85 |
| 9 | 奈厄布拉勒河 | 美国 | Near Verdel, Nebr | 98.11 | 1 787 | 107°34'12" W,46°6'58" N | 0.05 |
| 10 | 南萨斯喀彻温河 | 加拿大 | Saskatoon | 846.79 | 550 | 111°32'52" W,56°50'2" N | 1.54 |
| 11 | 松花江 | 中国 | 哈尔滨 | 3 397.06 | 3 230 | 129°2'26" E,45°46'11" N | 1.05 |
| 12 | 普拉特河 | 美国 | Louisville, Nebr | 534.69 | 2 266 | 77°14'46" W,42°40'20" N | 0.24 |
| 13 | Halil Rud river | 伊朗 | Hossein Abad Jiroft | 36.40 | 407 | 57°44'56" E,28°24'20" N | 0.09 |
), ArticleFig(id=1307264070663565494, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=表1, caption=
砂质辫状河流量等参数调研(据刘警阳等,2024修改)
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| 序号 | 河流 | 位置 | 水文站 | 平均洪峰流量m3/s | 河道宽度/m | 宽度测量坐标 | 等效流量m2/s |
|---|
| 1 | 亚马孙河 | 巴西 | Santo Antonio Do Ica | 68 192.99 | 10 532 | 59°42'48" W,3°2'52" S | 6.47 |
| 2 | 巴拉那河 | 阿根廷 | Corrientes | 21 917.69 | 1 722 | 63°13'51" W,23°47'27" S | 12.73 |
| 3 | 马更些河 | 加拿大 | Norman Wells | 18 130.55 | 2 811 | 111°32'40" W,59°26'18" N | 6.45 |
| 4 | 贾木纳河 | 印度 | Bahadurabad | 50 531.08 | 3 140 | 84°38'41" E,25°19'54" N | 16.09 |
| 5 | 恒河 | 印度 | Farakka | 44 419.30 | 5 136 | 80°29'20" E,18°0'28" N | 8.65 |
| 6 | Rakaia river | 新西兰 | Fighting Hill | 398.31 | 606 | 168°18'23" E,45°55'10" N | 0.66 |
| 7 | 育空河 | 美国 | Ruby, Alas | 12 966.21 | 4 914 | 131°5'29" W,67°3'4" N | 2.64 |
| 8 | 维斯瓦河 | 波兰 | Warsaw | 1 151.13 | 1 350 | 20°21'18" E,52°22'20" N | 0.85 |
| 9 | 奈厄布拉勒河 | 美国 | Near Verdel, Nebr | 98.11 | 1 787 | 107°34'12" W,46°6'58" N | 0.05 |
| 10 | 南萨斯喀彻温河 | 加拿大 | Saskatoon | 846.79 | 550 | 111°32'52" W,56°50'2" N | 1.54 |
| 11 | 松花江 | 中国 | 哈尔滨 | 3 397.06 | 3 230 | 129°2'26" E,45°46'11" N | 1.05 |
| 12 | 普拉特河 | 美国 | Louisville, Nebr | 534.69 | 2 266 | 77°14'46" W,42°40'20" N | 0.24 |
| 13 | Halil Rud river | 伊朗 | Hossein Abad Jiroft | 36.40 | 407 | 57°44'56" E,28°24'20" N | 0.09 |
), ArticleFig(id=1307264070739062967, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=EN, label=Table 2, caption=
Sedimentary numerical simulation parameters of sandy braided river
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| 参数项 | 模拟设定值 | 说明 |
|---|
| 沉积物粒度中值/μm | 300 | — |
| 泥质沉积物供应量/(kg/m3) | 10 | 参考现代沉积数据 |
| 砂质沉积物浓度/(kg/m3) | 2.5 |
| 沉积物组分 | 细砂 | 中砂 | 粗砂 | 巨砂 | 多种组分混合后中值粒径约为300 μm |
| 砂质沉积物组分粒度中值/μm | 150 | 300 | 750 | 1 500 |
| 砂质沉积物组分含量/(质量占比,%) | 25 | 50 | 15 | 10 |
| 沉积物浓度/(kg/m3) | 1.25 | 2.5 | 0.75 | 0.5 |
| 砂质沉积物密度/(g/cm3) | 2.65 | — |
| 底床坡度/(°) | 9.3×10-5 | 冲积平原坡度平缓 |
| 河道宽度/km | 3.2 | — |
| 水流量/(m3/s) | 5 000 | 10 000 | 20 000 | 40 000 | 80 000 | 变量 |
| 等效流量 | 1.56 | 3.12 | 6.25 | 12.5 | 25.0 | m2/s |
| 参考河流 | 南萨斯喀彻温河1.54 | 育空河2.64 | 亚马孙河6.47 | 贾木纳河16.09 | — | — |
| 演化成熟步长 | 3 890 | 2 990 | 1 500 | 1 100 | 880 | — |
| 平均水深/m | 4~6 | 取决于河宽、底床坡度及水 |
| 控制流速/(m/s) | 0~4.5 |
| 网格单元大小/m | 50×20 | — |
| 平面网格单元总量/个 | 1 600×160 | — |
| 模拟区域尺寸/m | 80 000×3 200 | — |
| 地貌演化系数 | 48 | 沉积模拟加速48倍 |
| 底床糙度-Chezy值/(m1/2/s) | 45 | 经验参数 |
| 水平涡黏系数/(m2/s)* | 1 000 | — |
| 垂向涡黏系数/(m2/s)* | 0.001 | — |
| 临近干网格侵蚀系数 | 0.25 | — |
| 水动力计算时间步长/min | 0.2 | — |
| 沉积模拟数据保存时间步长/min | 15 | — |
), ArticleFig(id=1307264070810366136, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1301938731196371763, language=CN, label=表2, caption=
砂质辫状河沉积数值模拟参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数项 | 模拟设定值 | 说明 |
|---|
| 沉积物粒度中值/μm | 300 | — |
| 泥质沉积物供应量/(kg/m3) | 10 | 参考现代沉积数据 |
| 砂质沉积物浓度/(kg/m3) | 2.5 |
| 沉积物组分 | 细砂 | 中砂 | 粗砂 | 巨砂 | 多种组分混合后中值粒径约为300 μm |
| 砂质沉积物组分粒度中值/μm | 150 | 300 | 750 | 1 500 |
| 砂质沉积物组分含量/(质量占比,%) | 25 | 50 | 15 | 10 |
| 沉积物浓度/(kg/m3) | 1.25 | 2.5 | 0.75 | 0.5 |
| 砂质沉积物密度/(g/cm3) | 2.65 | — |
| 底床坡度/(°) | 9.3×10-5 | 冲积平原坡度平缓 |
| 河道宽度/km | 3.2 | — |
| 水流量/(m3/s) | 5 000 | 10 000 | 20 000 | 40 000 | 80 000 | 变量 |
| 等效流量 | 1.56 | 3.12 | 6.25 | 12.5 | 25.0 | m2/s |
| 参考河流 | 南萨斯喀彻温河1.54 | 育空河2.64 | 亚马孙河6.47 | 贾木纳河16.09 | — | — |
| 演化成熟步长 | 3 890 | 2 990 | 1 500 | 1 100 | 880 | — |
| 平均水深/m | 4~6 | 取决于河宽、底床坡度及水 |
| 控制流速/(m/s) | 0~4.5 |
| 网格单元大小/m | 50×20 | — |
| 平面网格单元总量/个 | 1 600×160 | — |
| 模拟区域尺寸/m | 80 000×3 200 | — |
| 地貌演化系数 | 48 | 沉积模拟加速48倍 |
| 底床糙度-Chezy值/(m1/2/s) | 45 | 经验参数 |
| 水平涡黏系数/(m2/s)* | 1 000 | — |
| 垂向涡黏系数/(m2/s)* | 0.001 | — |
| 临近干网格侵蚀系数 | 0.25 | — |
| 水动力计算时间步长/min | 0.2 | — |
| 沉积模拟数据保存时间步长/min | 15 | — |
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