Changes

手钻-管井

294 bytes added, 22:53, 19 October 2015
no edit summary
{{Language-box|english_link= Hand auger - driven wells | french_link= Coming soon | spanish_link= Coming soon | hindi_link= Coming soon | malayalam_link= Coming soon | tamil_link= Coming soon | korean_link= Coming soon | chinese_link=手钻-管井 | indonesian_link= Coming soon | japanese_link= Coming soon }}
[[Image:drilling icon.png|right|80px]]
[[Image:Point and well screen.jpg|thumb|right|200px| 尖头和井管防砂滤网]]
__NOTOC__ <small-title />
管井由尖头多孔管、割缝筛管或带有尖头井管滤网的管道组成,管井深入到含水层。它的工作原理与将钉子钉入木头相同。使用这种方法时挖出的材料会落在一旁,因此不需要清理。通常要使用很厚的管道和特殊设计的联轴器来抵挡作用力。使用锤具或普通锤子将管道捶入地下。
{| border="1" cellpadding="5" cellspacing="0" align="centernone"
|-
! width="50%" style="background:#efefef;" | 优势
Akvopedia-spade, akvouser, bureaucrat, emailconfirmed, staff, susana-working-group-1, susana-working-group-10, susana-working-group-11, susana-working-group-12, susana-working-group-2, susana-working-group-3, susana-working-group-4, susana-working-group-5, susana-working-group-6, susana-working-group-7, susana-working-group-8, susana-working-group-9, susana-working-group-susana-member, administrator, widget editor
30,949
edits