›› 2009, Vol. 30 ›› Issue (11): 3435-3440.

• Geotechnical Engineering • Previous Articles     Next Articles

Field tests on groundwater level and yield of water under vacuum preloading

ZHOU Qi1, 2，LIU Han-long1, 2，GU Chang-cun1, 2   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China
  • Received:2008-01-30 Online:2009-11-10 Published:2010-01-07

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Abstract:

Field tests on groundwater level and yield of water was carried out for researching the varying process of groundwater level and yield of water under vacuum preloading. It is concluded that the groundwater level descends rapidly at the beginning of vacuum preloading and then becomes relatively stable; it ascends rapidly after the end of vacuum preloading; there is groundwater recharge from the outside to the inside of the reinforced area during and after vacuum preloading, which forms a depression-cone, until the outside and inside groundwater level become balanceable in motion; the plastic drain has a great effect on the movement of groundwater; the average yield of water is large at the beginning of vacuum preloading and then decreases rapidly until it becomes stable; the average yield of water of the center area is larger than that of the margin area.

Key words: vacuum preloading, groundwater level, yield of water

CLC Number: 

  • TU 470
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