黄淮海冲积平原盐碱低洼地的治理模式——以禹城县北丘洼为例

MODEL OF HARNESSING SALINE-ALKALI IN DEPRESSION IN THE HUANG HUAI HAI ALLUVIAL PLAIN——TAKE BEI QIUWA IN YUCHENG COUNTY, FOR EXAMPLE

低洼盐碱荒地的治理模式是打井完整的浅群井,强行抽出地下咸水,降低地下水位,腾出地下库容、然后引地面淡水淋洗土壤中的盐分。文中估算了单孔井的影响半径,涌水量以及地下水的调节储量和地下水盐分的调节储量。

A great deal of depression is distributed over The Huang Huai Hai alluvial plain, based on watersoil condition, they are divided into three types--Sand depression, Salinezedmarshed depression and Salinizated depression. The Bei QiuWa belong the last one.A common characteristic in these depress ions is that drainage of ground water isn't unimpeded .Because there is difference in water Soil conditions, used transform way is different too.The paper Shows that full irrigation for flushing salt play the great role in Salinen-alkali soil transform in Bei QiuWa . Velocity of flushing Salinen is rapid, effect is extremely marked .Flushed salinen content in the lowest part can't be drained a way through ground water.Based on the Situation, the paper poses model about harnessing depression Salined-alkali soil, Which dig a lot of non-complete phreatic water wells to pump salt ground-water to reduce groundwater table to empty out ground starage capaity, then, diverting lower minelization surface water flush salinity in soil.The paper calulated affective radius on single well, quantity of pourings out water, adjustable reserves of ground water and adjustable salinity reserve of ground water.