淤积

First , erosion resulting from excessive deforestation in the upper reaches of the river and , second ,heavy silting which raised the riverbed in the main channel .

两个主要因素导致了夏季长江及其支流的特大洪水。第一，过度砍伐引起的河流上游的侵蚀，第二，严重的泥沙淤积抬高了主干道

First , erosion resulting from excessive deforestation in the upper reaches of the river and , second ,heavy silting which raised the riverbed in the main channel .

第一，过度砍伐引起的河流上游的侵蚀，第二，严重的泥沙淤积抬高了主干道的河床。英语学习网

First, erosion resulting from excessive deforestation in the upper reaches of the river and, second, heavy silting which raised the riverbed in the main channel.

第一两国度砍伐引起的河流上游的侵蚀，第二，严重的泥沙淤积抬高了主干道的河床。

It conducts thorough analysis on testing results of open sluicing of the reservoir during flood season in last three years and points out the fact that after scouring by a certain discharge, the reservoir will be difficult to be scoured even if bigger discharge comes.

对近三年来三门峡水库汛期敞泄排沙的试验结果进行了较为深入的分析，指出三门峡水库经过一定流量冲刷后，即令再来大流量也难以冲刷的事实，充分说明了水库冲刷与淤积并不是完全可逆的。

Then, all of the rats in toxication group received a single intragastric administration of ANIT (200 mg/kg) in order to induce acute intrahepatic cholestasis.

中毒组按200 mg/kg一次性灌服ANIT诱发大鼠急性肝内胆汁淤积病变，观察灌服ANIT后中毒组在48， 96， 144， 192 h胆汁流量、血中TB和ALT值及胃肠MMC的变化。

As for the excavation of the sand-gravel zones,except the toe slab and its 1/9 bottom width down stream,the alluvial layers are excavated to the micro-weathered rocks,while the other sections remain unexcavated.

闸门利用水力和杠杆原理实现自控关闭；闸坝平时挡水发电，洪水期自动翻倒泄洪冲砂，有效地解决洪水对上游库区实物的淹没损失及水库泥沙淤积问题；闸坝采用地下混凝土连续墙进行地基防渗处理及面流消能，消能效果显著，工程投资少。

Based on systematic analysis of various desilting methods by using existing reservoirs, the paper puts forward an overall thinking of desilting system of auto-suction pipe of the Xiaolangdi Reservoir, i.e. to automatically discharge the deposited fine sands within about 40 km area in foreside of the dam through dam tunnel or tunnel on the right bank of mountain by placing a removable and lengthable pipe equipped with a suction head in the near dam section of the reservoir area.It can discharge 300 million tons sediment each year by preliminary estimation.

在系统分析已建水库各种排沙方式的基础上，提出了小浪底水库自吸式管道排沙系统总体思路，即利用水库自然水头，在近坝段库区内铺设可移动并带有吸泥头、可逐渐加长的管道，自动地将坝前约40 km范围内淤积的细颗粒泥沙和通过过坝隧洞或右岸山体内的隧洞排出库外，初步估算每年可排出泥沙3亿t。

As aresult of fluvial scouring and aggrading the riverbed, the alluvial layer of circular-arclayered alluvial valleys is fluid-saturated porous medium.

由于河流的淤积和冲刷，沉积河谷场地的沉积层多为饱和土。

For the shipping safety of Three Gorges Project, a physical model (1:100) experiment has been implemented from 2002 to 2003.The physical model is to evaluate the daily peaking influence on upper flow conditions for navigation and it is supposed that the Three Gorges Project have been operated 50+4 years and 70+6 years under aggrading conditions.

为了三峡工程航运安全，2002~2003 年利用 1：100 三峡库区水工模型，进行了三峡工程运行至 50+4 年和 70+6 年淤积地形条件下的电站汛期日调节对上游通航水流条件影响的物理模型试验。

Firstly, the flood control regulation of TGP in Sep is computed based on the analyses on the inflow in Sep and Oct, and the risk and loss on the ahead impounding scheme is calculated and analyzed. Then, the storage level, power production and releasing discharge are achieved by computing on the electricity generation model through reservoir regulation graph. Thirdly, obstruction in channel is analyzed and the problem in the Chongqing reach is more serious in 175-145-155m scheme. The sediment aggrading process and distribution on different schemes is calculated by 1-D reservoir mathematical model. The navigation benefit is computed by navigation model. Based on above calculations, the impounding time is decided by the multi-purpose decision model, and evaluate by analytical hierarchy and balance layout model. A best impounding scheme is achieved to match the requirement of flood control electricity generation and navigation et al.

首先，在对宜昌站9、10月份来水分析的基础上，采用第2章建立的防洪优化调度子模型进行了三峡水库9月份防洪调度，分析了汛末提前不同天蓄水对防洪的影响，计算了汛末不同蓄水方案水库9月份的洪灾风险率和风险损失；接着，根据第2章建立的发电调度子模型进行了三峡水库发电调度计算，得出了不同蓄水方案下水库的坝前水位、发电量及下泄流量过程；然后，分析了175-145-155m方案下三峡水库的碍航问题，指出175-145-155m方案下重庆河段的碍航问题最为严重，通过进行不同蓄水方案下水库一维泥沙冲淤计算，得出了不同蓄水方案下库区淤积过程及分布，并通过航运调度子模型，计算了不同蓄水方案下水库的航运效益；最后，根据以上防洪、发电及航运调度计算的结果，运用第3章水沙多目标决策模型对水库的蓄水时间进行了多目标决策，并采用层次加权均衡规划模型对计算结果进行评价，得到一个能满足水库防洪、发电及航运各方面要求的最佳蓄水方案。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失