braided river
[地理] 辫状河
网状河
2025-06-26 02:29 浏览次数 3
[地理] 辫状河
网状河
braided river deltas, formed during progradation from braided rivers to lakes, are extensively developed in the sangonghe formation of jurassic in yanqi basin.
焉耆盆地侏罗系三工河组广泛发育由辫状河进积到湖泊中形成的辫状河三角洲。
also, with the mid-term datum rising, the braided river channel sand body is thickened, the sand grain size is getting coarser, with sand-shale ratio increasing.
同时认为,储集层物性随着中期基準面的上升,辫状河道沉积砂体变厚、粒级变粗、砂泥比增大;
the braided river was transited to meandering river in extension system tract.
扩张体系域时期是由辫状河向曲流河过渡;
upper guantao formation in laohekou oilfield of shengli oil province is a typical reservoir of fluvial facies with major oil - bearing system containing meandering and braided river sedimentation.
胜利油区老河口油田的馆上段为典型的河流相油藏,主力含油层系存在曲流河沉积和网状河沉积。
the braided river is further divided into gravel braided river and sandy braided river, the upstream and downstream are also defined.
其中对辫状河进一步划分为两种类型,即砾质辫状河和砂质辫状河,并划分出了辫状河上游和下游。
based on the analysis above, the high- resolution sequence stratigraphy models from braided river delta to turbidite fan are constructed.
建立了研究区以中期旋回为单元的高分辨率层序地层发育模式;
the middle and lower reaches of the yangtze river is typical bending braided river which have many shoals and the riverbed evolution of these reaches is serious.
我国长江中下游是典型的河槽分汊型河流,浅滩众多,河床演变剧烈,主槽与支汊交替转化,碍航问题突出,成为制约航运发展的「瓶颈」。
taking hb braided river massive reservoir with strong basal ground water as an example, the paper discusses the deliverability decreasing methods of similar reservoirs and develops the curves.
以hb辫状河强底水块状油藏为例,探讨了同类油藏特征下产能递减规律,建立此类油藏产能递减典型曲线。
there is braided river delta sedimentary system in the northeast of the gentle slope, while delta in the northwest.
在东北部缓坡带发育辫状河三角洲,而在西北部缓坡带则发育曲流河三角洲。
the sedimentary facies mainly consists of 5 types, such as meandering river , braided river, braided river delta, lake and swamp lake.
沉积相类型主要为曲流河、辫状河、辫状三角洲、湖泊、沼泽化湖泊等5种。
in vertical, from e31 to e32, it changes from braided river delta to a shallow lake facies, thus, formed a cycle which lithologic character is rough at bottom.
在纵向上,从e31-e32,从下向上由辫状河三角洲相变为浅湖相,构成了一正旋回沉积。
it analyzes characteristics of water flow and sediment motion and sediment transportation in the inlet reach of the braided river and their effects on fluvial evolution.
分析了分汊河道进口段的水沙运动及输沙特性以及对汊道演变的影响;
sangonghe formation(j 1 s)in baobei district of baolang oilfield, yanqi basin, is a braided river delta-lacustrine depositional system of shallow gentle slope with coarse grains.
宝浪油田宝北区块下侏罗统三工河组为浅水缓坡型粗粒辫状河三角洲-湖泊沉积体系。
the result shows that, the depositional system of the damoguaihe formation in beier basin composes of meandering river delta, fan delta, braided river delta, braided stream delta and lake.
结果表明,区域发育的沉积体系主要有曲流河三角洲、扇三角洲、辫状河三角洲、网状河三角洲和湖泊。
the bending braided river is common in the alluvial plain, which water and sediment movement characteristics are complex.
弯曲分汊型河道在沖积平原河流中常见,其水沙运动规律较为复杂。
the uranium mineralization is found in the braided river and lacustrine delta subfacies, and related to organic and pyrite-rich conglomerate and sandstone.
铀矿化赋存于网状河与河湖三角洲亚相中,与富含有机质和黄铁矿的砾巖、砂巖有关。
characteristics of water flow and sediment motion in braided river and their effects on fluvial evolution;
分汊河道是一种常见的河型,其特性研究在河道整治工程中有着重要的现实意义。
definitely brought forward that h2 and h3 lied in the transition zone from braided river to meandering river in the research area.
主要成果与创新如下: 1、明确提出h2、h3 段研究区为辫状河向曲流河的过渡区。
then consider that it exists two main facies in n1~n21, sedimentary environment of braided river delta and lake.
n21从西向东主要由辫状河三角洲平原渐变为辫状河三角洲前缘亚相;
in the abushan formation, alluvial fan, braided river and shallow salt lake facies are recognized.
邦爱组中识别出碳酸盐巖开阔台地相、局限台地相、蒸发台地相和碎屑潮坪相、泻湖相。
research results show that lower shihezi formation is mainly a set of proximal braided river deposits.
研究结果表明,下石盒子组主要为一套近源网状河流沉积。
main factors effecting on flow rate in braided river is gradient of anabranch, area of water, roughness and velocity.
影响汊道分流比的主要因素有:两汊的比降、过水断面积、糙率、流速等。
braided river delta that braided river systems prograde into an inland lake were well developed in the middle triassic of kuqa depression, tarim basin.
塔里木盆地库车坳陷中三叠统广泛发育由辫状河进积到内陆湖泊中而形成的辫状河三角洲。