河道

The evolvement of Diffluence River is the more complicated than Single River, because the diversion"s thing is changed with channel"s distortion. The river diversion is the general reflection of a good many factors, which mutually influence and adjust. In particular, when main channel occurs scouring-silting change, which causes the movement of water, sediment, and river bed in river system, the diversion will more be changed, with the study on division of discharge and sediment been further into, some practical engineering problem are solved.

目前，在对河道分流的认识与治理开发上虽取得了不少成绩，但随着社会经济的发展，人们对分流河道演变规律的认识与治理要求越来越高，随着人类对河流改造活动的加剧，河道的水沙条件可能发生急剧的改变，这些变化有可能使分流分沙的缓慢变化加剧，甚至改变原来的分流规律，许多研究者对分流分沙进行了较深入的研究，并能较好地解决了工程实际问题。

Along with the extended construction of ecological watercourse, varies of hydrophyte are used to purify polluted water.

随着生态型河道的推广建设，各类水生植物被用于河道水体净化，然而植被的种植改变了原先河道的水体结构，影响了水体的水流特性。

In the paper, river and the downstream area of dike are regarded as a whole system, and hydraulic model of coupling 1-D river and gradual dike-break is established, therein the Preissmann implicit difference scheme is applied to Main River, and the FVM is applied to the breach and polder. On the basis of FVM and unstructured grids, TVD ?

本文将河道与堤坝下游区域视为一个整体，对于单一河道采用Preissmann四点隐式差分格式计算，对于溃口及圩区采用有限体积法，建立了一维河道与堤坝渐溃耦联的水力模型，也是一维、二维耦合的水流模型。

The result indicates that Chang 6^2 is a delta-lacustrine depositional system, and the principal producing pay is in subaqueous distributary channel where deposit fine sandstones and have good physical properties. The areas in the center of subaqueous distributary channel get high oil-produce while the flanks gel lower oil-produce relatively. The distribution of oil layer is mainly controlled by lithology, and Chang 6^2 is lithologic reservoir developed in the monocline setting which clime to the northwest.

研究表明：长6^2储层为三角洲－湖泊沉积体系，主要产油层位于长6(上标 2-2)的水下分流河道中，沉积细砂岩且物性较好，河道中心地区的产油量相对较高，而河道侧翼地区的产油量相时较低：长6^2中的油层分布主要受岩性控制，是在北西倾料的单料背景上发育的岩性油藏。

Based on the analysis of the existing pollution status of urban river s, the remediation technology including physical, chemical and bioecological technology were introduced, with analysis of their advantage, disadvantage and applicability.

在分析城市河道水体污染现状和污染源的基础上，介绍了物理、化学、生物生态等城市河道水质恢复技术，分析了不同技术的优缺点及适用性，并预测了城市河道水体恢复技术的发展趋势。

Based on the analysis of the existing pollution status of urban rivers, the remediation technology including physical, chemical and bioecological technology were introduced, with analysis of their advantage, disadvantage and applicability.

在分析城市河道水体污染现状和污染源的基础上，介绍了物理、化学、生物生态等城市河道水质恢复技术，分析了不同技术的优缺点及适用性，并预测了城市河道水体恢复技术的发展趋势。

The results show that the velocity of the flowbecomes larger at the narrow areas, the breadthwise distribution of the velocity isinfluenced by the underwater landform and the riverway. The computational watertemperature near the dam agrees well with the measured data.

计算所得的流场与河道地形相比可以看出，水面狭窄的江段水流流速较大，江段突扩段附近有明显回水区，流速的横向分布受河道弯曲及水下地形和河道主槽影响。

And after analyzing the heterogeneity of sand body, point the minor channels, especially, have important influence on the intraformational oil-flooding direction, forming and distribution of remaining oil because of their function as barrier, breaking fluid and poor permeability in fluvial sand body.

通过非均质性研究，进一步揭示了单一河道砂体内部非均质性，特别是次分流河道砂体的分布，在河道砂体内起到遮挡、阻流、特低渗透等作用，对层内水驱油方向、剩余油形成与分布具有重要影响。

The first kind deposition sequence is the superposition underwater distributary, forming chlorite and Laumontite cementation near the side of lake. The second deposition sequence is underwater distributary, forming chlorite and calcite cementation. The third deposition sequence is underwater river-bay, forming calcium and mud cementation.

第Ⅰ种沉积序列为迭置水下分流河道微相，主要发育绿泥石－浊沸石胶结相，在迭置水下分流河道靠近湖盆一侧；第Ⅱ种沉积序列为水下分流河道微相，主要发育绿泥石－方解石胶结相；第Ⅲ种沉积序列为水下分流间湾微相，主要发育钙质－泥质胶结相。

The reservoir quality of bank of river facies, distributary channel of shallow delta, distal bar and distal channel of delta front, sand sheet, overbank of terminal fan take second place.

河流相堤岸亚相、浅水三角洲分流河道、三角洲前缘远河道与远砂坝、前缘席状砂、末端扇河道漫溢相储层物性次之。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。