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中南大学学报(英文版)

Journal of Central South University

Vol. 21    No. 10    October 2014

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Water shutoff model test in water-rich sandy stratum by phosphoric acid-water glass grout
YANG Yu-you(杨宇友), NI Mao-guang(倪茂光)

School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China

Abstract:The rheological behavior of phosphoric acid-water glass grout in different mixing ratios was studied. Grout made of water glass with Baume degree of 20° and 13.4% phosphoric acid by 1:1 volume ratio is found to be more effective in stopping water. Laboratory model test of water shutoff by grouting was conducted. Test results show that the diffusion length and water cutoff effect of the grout are significantly improved as the grout head is raised, due to the dilution of underground water, and it takes the grout longer than its gel time to cut off water.

 

Key words: water-rich sandy stratum; phosphoric acid-water glass grout; grouting; water shutoff; model test

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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