Rock and Soil Mechanics ›› 2019, Vol. 40 ›› Issue (1): 343-350.doi: 10.16285/j.rsm.2018.0187

• Geotechnical Engineering • Previous Articles     Next Articles

Application and analysis of compressed air drainage wells in landfill slip control

HE Hai-jie1, 2, LAN Ji-wu2,3, GAO Wu2, 3, CHEN Yun-min2, 3, MA Peng-cheng2, 3, XIAO Dian-kun2, 3   

  1. 1. College of Civil and Architectural Engineering, Taizhou University, Taizhou, Zhejiang 318000, China; 2. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, China; 3. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, China
  • Received:2018-01-30 Online:2019-01-11 Published:2019-01-31
  • Supported by:
    This work was supported by the National Basic Research Program of China (973Program) (2012CB719800) and the National Natural Science Foundation of China (41502276, 51578356).

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Abstract: Thirty-four compressed air drainage wells with an average depth of 15 meters were set up in an unstable landfill in Northwest China for slip control. The surface displacement, deep horizontal displacement and leachate level before and after control were compared to analyze the effect of slip control using the compressed air drainage wells. The results show that the maximum surface displacement rate is reduced from 237.3 mm/d to 78.7 mm/d after treatment with compressed air drainage wells, the maximum pumping rate of compressed air drainage wells is 255 m3/d, and the average pumping rate is 132 m3/ d, the pumping rate of the single drainage well is 3.88 m3/d. The compressed air drainage wells have low cost and short construction period, and have good effect on landfill slip control, which can provide reference for landfill slip control.

Key words: landfill, local slip, stability control, compressed air drainage well, field monitoring

CLC Number: 

  • TU 470
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