1) midfan
['mid,fæn]
中部洪积扇
2) alluvial fan
洪积扇
1.
The probability curves of alluvial fan conglomerate reservoir have the characteristics of coarse-grained, wide-range and low-slope.
粒度分析资料是一个传统的划相指标,洪积扇储层的概率粒度曲线以其粗粒度、宽区间、低斜率为特征。
2.
Based on the study of different hierarchical bounding surfaces and the transplantation of the Miall\'s idea in the complex reservoir of alluvial fans,a hierarchy analysis method is established,which is suited for the development precision on the inner structure of the alluvial fans.
在厘定其不同层次界面成因的基础上,把Miall研究思路成功移植到洪积扇相复杂储层中,建立了与开发精度相匹配的洪积扇储层内部结构研究的层次分析法,即复合水道、单期水道和高渗透段3个层次。
3) alluvial and flood fan
冲洪积扇
1.
On Nitrogen transform and hydro-geochemical characteristics of the Hun river alluvial and flood fan;
浑河冲洪积扇中下游地下水中氮转化与水文地球化学特征的研究
4) proluvial fan
洪积扇
1.
Distribution areas of proluvial fan are from several square meters to more than one hundred square kilometers,the thickness are from several meters to hundreds meters.
洪积扇分布面积小则数平方米,大则几十上百平方公里,分布厚度由几米到几十米,甚至几百米。
2.
In order to improve the depiction of reservoir heterogeneity of thick proluvial fan reservoir,a novel method for classifying flow units is presented.
针对洪积扇相储层沉积厚度大、储集岩性粗、非均质性强等特点,提出了以地质研究为主线,定性分析与定量分析相结合的分层次流动单元研究方法。
3.
The thick-loess in proluvial fan is widely dispersed over North China,especially on the edge of a basin which is surround by proluvial fans where are considered as the sites of large-scale power stations or other kinds of heavy plants in recent years due to its open and broad terrain but poor soil.
山前冲洪积扇厚层黄土在北方广泛分布 ,近几年已成为大型火电厂和其他工业建筑主要选址地段。
5) ancient proluvial fan
古洪积扇
6) midfan
['mid,fæn]
中部冲积扇<地>
补充资料：洪积扇
| 洪积扇 puluvial fan 干旱、半干旱地区暂时性山地水流出山口堆积形成的扇形地貌。组成洪积扇的泥沙、石块颗粒粗大，磨圆度差，层理不明显，透水性较强，扇面上水系不发育。由于山前构造断裂下降，洪积物厚度可达数百米。从扇顶至扇缘高差也可达数百米。一系列洪积扇互相联结形成洪积平原，又称山麓洪积平原。洪积扇因山地不断抬升，山前平原不断下降，形成上叠式扇体。当山地上升规模、幅度均较大时，老扇随之抬升，在其下方发育新扇体，形成串珠状洪积扇。当山地前缘有不等量的新构造活动时，新扇体向相对下降的一侧移动，使新老扇体并列向一侧偏转，造成不对称形态。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条