最近30从www.hoelymoley.com 2023 - 07 - 07 - t17:57:43z //www.hoelymoley.com/feeds/question/19634 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/19634 1 采用中心 //www.hoelymoley.com/users/18169 2020 - 04 - 26 - t15:43:14z 2020 - 04 - 26 - t20:52:22z

< p >我试着去了解理查兹方程,可用于计算土壤水的流动。教科书中我发现以下几点:< / p > < p > < a href = " https://i.stack.imgur.com/sQ7UF.png " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/sQ7UF.png " alt = "在这里输入图像描述" > < / > < / p > < p >不幸的是,教科书并没有真正解释压力梯度实际上是什么。矩阵的潜力吗?土壤孔隙实际上把水从表面进入土壤?< / p > < p >还是也许地下水?大表面的区别和groundwatertable越高“压力梯度”? < / p >

//www.hoelymoley.com/questions/19634/-/19635 # 19635 1 EarlGrey //www.hoelymoley.com/users/5887 2020 - 04 - 26 - t20:52:22z 2020 - 04 - 26 - t20:52:22z

< p >压力来衡量点z + dz (dz无限小)和z。< / p > < p >在表面,是大气压力的压力。在表面的假设在1厘米深度,压力是大气压力+无论水柱的重量(考虑饱和度等等)。< / p > < p >如果压力梯度与重力平衡,你将没有流(水在玻璃不能混为一谈,尽管顶部的玻璃压力低于底部,底部的水有点向上推动平等,相反推动下行接收来自上方的水的重量)< / p > < p >思考这个问题:你是一个蓄水池的底部(底部不封闭)。压力是大气压力+储层的深度。这是足以引起水流从水库外,下面渗/通过大坝。< a href = " https://i.stack.imgur.com/cBUp3.jpg " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/cBUp3.jpg " alt =“好图从奥尔森和史蒂芬斯(2016)https://www.researchgate.net/publication/319206472_RELEARNING_HOW_TO_LOOK_AT_PIEZOMETRIC_DATA_FOR_SEEPAGE_EVALUATION " > < / >图不是我自己的工作,从奥尔森的出版物和史蒂芬斯(2016),可以发现在这个URL < a href = " https://www.researchgate.net/publication/319206472_RELEARNING_HOW_TO_LOOK_AT_PIEZOMETRIC_DATA_FOR_SEEPAGE_EVALUATION " rel = " nofollow noreferrer " > https://www.researchgate.net/publication/319206472_RELEARNING_HOW_TO_LOOK_AT_PIEZOMETRIC_DATA_FOR_SEEPAGE_EVALUATION < / > < / p >

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