截水是地下水控制的方法之一，防止地下水渗透到基坑（槽）内，影响工程施工。 采用截(隔）水帷幕的目的是为了切断基坑外的地下水流入基坑内部。截水帷幕的厚度应满足基坑防渗要求，截水帷幕的渗透系数宜小于1.0*10-6cm/s。
截水墙 diaphragm wall ; [水利] cut-off wall ; Barrier
截水渠 catchwater ; catchwork ; catch drain
截水口镶件 Runner Shut-Off Insert
钢板桩截水墙 Steel Sheet Piling Cutoff
截水管 Intercepting Drain
截水帷幕 curtain for cutting of water ; waterproof curtain
暂停截水 hold-up disconnection
板桩截水墙 Sheet pile cut-off ; Sheet pile screen ; pile-planking ; sheet-pile
芯墙截水槽 core cutoff trench
灌浆截水墙 grouted cut-off wall
为防止坝下涵管产生集中渗流，常将涵管的管壁外围局部加厚，称为截水环。
To prevent the dam seepage, he slipped end-over-end produce concentration of outer wall will often he slipped end-over-end, known as section thickness of the local water ring.
底板、闸墩和截水墙等为其子结构，交通桥、工作桥和胸墙等处理为内部支撑。
The floor, piers and intercepting walls are its substructures. the traffic bridge, operating bridge and altar are treated as internal supports.
截水环：防止集中渗流，在外围设置，以改变水流方向，增加渗径，减小渗流。
Section water ring: prevent concentration in the peripheral Settings, seepage, to change the direction of flow, increasing permeability diameter, reduce the seepage.
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