pumping irrigation是什么意思

用法例句

Study on two-well pumping seepage flow in joint rock;

节理岩体双孔抽水渗流研究

Derived from the most outstanding characteristic of the effects which the grouting pressure has on grout diffusibility, this article poses a method, that suggests grouting and pumping are simultaneously applied, this method will be helpful to increase the grouting hydraulic gradient as well as expand the effective grout diffusivity rad.

本文从注浆压力对浆液扩散影响最显著的特点出发，提出用注浆孔与抽水孔同时工作的方法，这种方法可使浆液水力坡度增大，增加浆液有效扩散半径，提高深表土层注浆效果。

To reveal the mechanism of karst collapse induced by groundwater pumping,the authors analyse the expanding condition of soil cavity by analytical method and put forward the concept of spalling force.

为研究人工抽水引起的岩溶地面塌陷的机理,用解析法分析了土洞扩展的条件,提出了剥落力的概念,认为土洞的扩展条件是剥落力大于土体抗拉强度。

The electricity-consumption to pump water is great in the Eastern Route Project of the South-to-North Water Diversion.

南水北调东线一期工程抽水用电量大,研究东线工程利用峰谷电价减少工程运行电费具有积极意义。

Based on conservation of mass,this paper deduced a theoretical model for land subsidence caused by construction loading on unconsolidated strata,and compared it with the elastic model for subsidence controlled by groundwater pumping.

依据含水层质量守恒原理,推导了非固结地层在建筑荷载作用下的地面沉降机理模型,并将其与Jacob假定下抽水引起的地面沉降弹性模型相比较,结果发现两种模型的机理表达式完全一致,仅区别于水动力原因或实质的不同。

Through an analysis of aquifer deformation machanism caused by groundwater pumping,the seepage flow equation with considering adynamic unit is deduced in this paper,and the mathematical model for the effect of aquifer deformation caused by groundwater pumping upon seepage field is presented.

通过分析抽水引起含水层变形机理,推导出了考虑单元体位移的渗流方程,提出了抽水引起含水层变形对渗流场影响的数学模型。

An exploratory model of secondary water-supply system and tactics of pumping water;

二次供水系统用水模型与抽水策略

arst ground collapse by pumping water is a environment geology calamity which is caused by mankind S action.

抽水形成的岩溶地面塌陷，是一种不可忽视的人为活动诱发产生的环境地质灾害，危害十分严重；它发生的基本条件是：岩溶发育、基岩上覆松散盖层和大量抽取岩溶水；它发生的基本作用是：潜蚀作用和吸蚀作用；其过程十分复杂。