檢視透水层的原始碼

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|<center><img src=https://img0.baidu.com/it/u=424644008,325460805&fm=253&fmt=auto&app=138&f=JPEG?w=466&h=413 width="300"></center>
<small>[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E9%80%8F%E6%B0%B4%E5%B1%82&step_word=&hs=0&pn=0&spn=0&di=7077204560107798529&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=424644008%2C325460805&os=894109999%2C2107202449&simid=424644008%2C325460805&adpicid=0&lpn=0&ln=1565&fr=&fmq=1649891451758_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fs12.sinaimg.cn%2Fmw690%2F006ZUGlnzy7gdcGGk7V4b%26refer%3Dhttp%3A%2F%2Fs12.sinaimg.cn%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1652483502%26t%3Da7728f6d1fb53ff942204257b62a8661&fromurl=ippr_z2C%24qAzdH3FAzdH3Fks52_z%26e3Bftgw_z%26e3Bv54_z%26e3BvgAzdH3FfAzdH3Fks52_80jdwncdca8adxt4r_z%26e3Bip4s&gsm=1&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined&dyTabStr=MCwzLDYsNCwxLDUsNywyLDgsOQ%3D%3D 来自 呢图网 的图片]</small>
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中文名: 透水层

外文名: Permeable layer

弱透水层: 渗透系数介于1—0.001米/昼夜者

不透水层: 渗透系数小于0.001米/昼夜的岩层

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'''透水层'''是指动水流能够透过的土层工地层。一般情况下，渗透系数大于1米/昼夜的岩层可认为透水，呈层状称[[透水层]]，呈带状称透水带，而渗透系数小于0.001米/昼夜的岩层，称为不透水层。渗透系数介于1—0.001米/昼夜者为半透水或弱透水层。只有透水层才有可能成为含水层。疏松的砂卵石层；半固结而富空隙的砂砾岩；富有裂隙的基岩；[[喀斯特]]发育的碳酸岩，既能容水，又能透过和排出重力水，都具备成为含水层的条件。透水层要成为[[含水层]]，必须在透水层下部有不透水层或弱透水层存在的储水构造，才能保证渗入透水层中的水聚集和储存起来。<ref>[https://www.360kuai.com/pc/9b55a85127e8b45a7?cota=3&kuai_so=1&tj_url=wd&sign=360_57c3bbd1&refer_scene=so_1 强透水层和弱透水层],快资讯 , 2017-07-17</ref>