JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2017, Vol. 47 ›› Issue (2): 37-40.doi: 10.6040/j.issn.1672-3961.0.2017.095

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Application of “sleeve-connected H-type” buffer in concrete transportation within oversize shafts

LIU Xie1, LI Guohua1, WANG Ming1, MA Chishuai2   

  1. 1. No.3 Engineering Co., Ltd., China Gezhouba Group, Xi'an 710000, Shaanxi, China;
    2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China
  • Received:2017-02-14 Online:2017-04-20 Published:2017-02-14

Abstract: Regarding aggregate segregation, excessively fast slipping and poor concrete mix-ability during concrete long distance convey by articulated chute in surge shaft of N-J(NEELUM-JHELUM)hydroelectric project, one kind of “sleeve-connected H-type” buffer was designed and its structure design & operation principle were discussed. Comparative trial and application in site indicate that comparing with original MY·BOX buffer the new one has a simpler structure and cheaper cost, and it can effectively control the concretes dropping speed under high elevation difference and resolve the concrete segregation and damage as well as breaking through for chute, guaranteeing the service life of equipment, construction safety and quality of concrete works, which can also provide reference for similar surge shaft concrete lining project.

Key words: shaft, concrete lining, sleeve-connected H-type Buffer, long articulated chute transportation

CLC Number: 

  • TU646
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