河道

Distributary channel sand of river depositional system and delta front sand of delta depositional system in Pinghu and Huagang group are the primary reservoir.

平湖组和花港组的河流相和三角洲相的分流河道和三角洲前缘等砂体是主要的储集层段。

Why have they so big difference in oil bearing properties in main band of distributary channel?

为什么同处于分流河道主体带上，含油性差别竟如此之大？

Deposit characters have fine succession, however, because of the underwater distributary channels movement and migration, the scale of the shallow deposits and delta front deposit were different.

沉积作用都有很好的继承性，但浅湖沉积分布范围以及三角洲前缘砂体的规模和展布特征随着水下分流河道的迁移和摆动而有所不同。

Based on research of underwater distributary channel, recombination bars and mouse bar , we can set up assorted scheme and discriminating characteristic .

将该区三角洲前缘"台型前缘"和"坡型前缘"两部分，其识别标志是以水下分流河道、复合河口坝和河口坝三种主要沉积微相为主导的多种微相的不同组合。

Lithic associations composed chiefly of quartzose sandstones were developed in delta plains and delta distributary channels with good physical properties to provide available reservoir space.

以石英砂岩为主的岩性组合主要形成于三角洲平原及三角洲前缘分流河道，物性好，提供了良好的储集空间。

In fact, the study to the hyperpycnal flow is very useful to the steadily of the down-stream and the full use of it.

从实际意义上来说，对黄河口泥沙异重流的研究有利于研究河口拦门沙的演化和治理问题，对黄河下游河道的稳定和充分利用等一系列问题都具有重大的现实意义。

Can we dredge the river to make it deeper?

我们能不能疏浚这条河道，把它挖得更深一点？

Under condition of high speed current in river, adredger's grab will drift when the dredger is working.

大流速下抓斗挖泥船的抓斗飘移是设计制造或合理使用在急流河道中施工的抓斗挖泥船所必须解决的问题。

Shandong Qingzhou Hongda dredging machine factory in a professional sand mining machinery, river dredging the pond, Salt Lake mining, iron-Shatti from sales of production equipment manufacturers, adjacent to State Road 309 and Jiqinggaosu roads, transportation is very convenient, founded in 1997 , Over the years I plant to its own product quality and integrity of the business philosophy and friends from various circles of love and support, in Shandong Province became the sand mining machinery in the area of one of the more influential enterprises.

山东青州宏达挖沙机制造厂是专业的采沙机械、河道池塘清淤、盐湖开采、铁沙提取设备的生产销售厂家，毗邻309国道和济青高速公路，交通十分便利，始建于1997年，多年来我厂以自身的产品质量，诚信的经营理念以及各界朋友的厚爱与支持，成为了山东省境内采沙机械领域中较有影响的企业之一。

Products are widely used in construction sites, ports, terminals, warehouses and freight yard mining, dredging boat-grab machine can be used for dredging rivers, reinforcing the embankment.

产品广泛应用于建筑工地、港口、码头、仓库货场和矿山企业，船式抓斗挖泥机可用于清淤河道、加固堤岸。

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。