渗漏损失

本文根据灌溉渠道渗漏损失计算目标和实验条件，将线性地质统计学应用于一维空间，探索较大范围点的Kriging最优插值法应用的某些规则与插值条件。

According to the seepage loss through canal measured in field , the linear geostatistics was applied in one dimensional case to explore the applicability of Kriging interpolation in large area .

结果表明，建立的渗漏损失改进模型、小水深情况下的糙率加大模型是合理的，反演得到的参数是精确的；

The results show that the modified seepage loss and roughness models are reasonable and the parameter estimates are acceptable ;

均一介质中梯形土渠自由稳定渗漏损失计算公式及其应用

Filtration loss from trapezoidal earth canal in uniform medium

研究结果可为渠道渗漏损失的计算提供依据。

The study result provides a basis for the calculation of canal seepage .

太湖地区直播稻田氮素的渗漏损失研究

Research on the Loss of Nitrogen in Direct-seeding Rice Field in Taihu Lake Region

大中型灌区干渠输配水渗漏损失经验公式探讨

Discussion on the Empiric Formula for Water-Transportation-and-Allocation Seepage Loss of Main Canal of Large-and-Middle-Sized Irrigation District

不合理施肥措施均会促进河沙泥和红黄泥土壤氮素、磷素、钾素养分的渗漏损失，尤以化学肥料的不合理施用更甚。

All irrational fertilization treatments facilitate leakage loss of N , P , and K nutrient .

有机-无机肥配施下氮钾的渗漏损失

A study on the leaching losses of nitrogen and potash under Mixed Application of organic and inorganic fertilizers

渠床土壤二维稳定入渗率实验及渗漏损失计算

Experiment of Steady Two-Dimensional Infiltration Rate of the Soil in the Canal Bed and the Calculation of Seepage Losses

我国灌溉渠系水的利用系数很低，渠道渗漏损失掉的水量所占的比例很大。

The water efficiency in canal system of irrigation is very low in our country , and the proportion of the waste water is large .

土壤氮素养分的渗漏损失主要发生在插秧后60天以内，磷的渗漏损失主要发生在插秧后15天之内，钾的渗漏损失主要发生在插秧后30天内。

N leaching appears within 60 days after transplanting rice ; P leaching appears within 15 days , and K leaching , within 30 days mostly .

通过分析1980-2004年资料，得出两水库的入库水量来源和出库水量分配情况，同时根据水库蓄变量推求两水库的蒸发、渗漏损失量。

By analyzing relevant data of1980-2004 , we have gotten the inflow and outflow water distribution of the two reservoirs , and calculated evaporation and seepage quantity .

计算结果表明，唐山农业区灌溉施肥引起根区以下硝态氮渗漏损失可造成浅层地下水的污染。

The results indicate that the nitrate-N leakage loss under the root zone caused by fertilizer irrigation could creat the pollution of shallow groundwater in Tangshan agricultural area .

研究结果表明，沟肥埋草显著减少了土壤渗漏损失，土壤含水量、吸水力、有机质、有效养分含量均显著提高，创造了营养沟内水肥气热良好稳定的局部环境；

Burying straw in trench can reduce the soil leakage significantly and improve the water content , water absorbing capacity , organic matter and efficient nutrition content of soil .

结果表明，施肥是钾素输入系统的主要途径，作物收获是钾素输出的主要途径，渗漏损失也是钾素输出的一个不可忽视的重要途径。

The results indicated that application and crop harvesting were major ways of K input and output , respectively , and percolation loss was a non-neglectful way of K output .

上水库大坝采用沥青混凝土面板堆石坝，库盆采用全面防渗方案，以减少渗漏损失。

The rock-fill dam with asphalt concrete facing is used in the head reservoir dam , the overall anti-seepage scheme is used in the reservoir basin in order to reduce seepage loss .

大量工程实践证明，采取渠道防渗措施以后，可以减少渗漏损失70%～90%，渠系水利用系数可极大提高。

The results of many engineering cases proved that the seepage should be decreased for 70 % ~ 90 % , and the water efficiency in canal system should be increased much .

以实测数据推求平原河道渗漏损失模型，为流域调水过程中的水资源配置和优化提供依据。

According to the data of actual measure , it inquires into the seepage model for river way in plain and provides basis for disposition and optimization of water resource in course of water allocating between different drainage area .

而宝鸡峡灌区完全依靠人工沟渠输、排水，故考虑沟渠的渗漏损失非常有必要，而且宝鸡峡灌区地处黄土高原南部，地下水水位偏低，有限的地表径流很难通过潜水层补给承压水。

However , the Baoji Gorge Irrigation District is located in the south part of Loess Plateau , the groundwater level is low . The limited runoff in surface is recharging the confined water through the phreatic aquifer very difficultly .

与传统制盐方法相比，土壤对制盐的影响变小，卤水向地表渗漏损失可以避免，蒸发效率可提高10%。

Compared to the salt pond without such layer the results obtained show the advantages of less effects of soil on it performance and no leakage of brine into the ground and the evaporation rate can have 10 % improved .

指出通过渠道防渗，不但减少了渗漏损失，提高了渠系水的利用率，而且也产生了巨大的经济效益，是我国农业由传统型农业向节水型农业转变的良好开端。

It also poses that this way not reduces seepage damage but improves the utilization ratio of water in channel system and also produces tremendous economic benefit . It 's a good beginning of changing domestic agriculture from traditional type to water saving type of agriculture .

埋地长距离管道输水方式因其地质条件要求不高，可随一定地形铺设，输水渗漏损失小，施工简单，造价较低，管理运行方便等优点，为设计者优先考虑。

Designer initiatively considers the way of buried long-distance water conveyance conduits , because it can be built in any geography without particular requirement for geology condition , and it has advantages in small water leakage loss , simple construction , lower cost , convenient for management and operation .

汾河水库蒸发渗漏水量损失分析计算

Calculation of Evaporation and Seepage Loss in Fenhe Reservoir

在对干渠以下各级渠道进行概化分类的基础上，采用回归分析方法建立灌区干渠以下各级渠道渗漏水量损失与流量间的相关关系，给出依据渠道流量估算渠道水利用系数的经验公式。

The relationship between seepage losses and discharge in canals and sub main canals , was established by regression analysis method , which is based on canal classification and the empirical equation of canal efficiency related canal discharge .

监测结果表明，雨季、旱季平均流量分别为417.1206.8m3/d，无降雨期间渗漏、蒸发蒸腾损失的水量之和占进水的42.1%~60.5%。

The average flow rates in rainy and dry seasons were 417.1 and 206.8m3/d . The sum of the infiltration and the evapotranspiration loss in period without rain occupied 42.1 % ~ 60.5 % of the influent water .