Soil Engineering and Foundation

›› 2013, Vol. 27 ›› Issue (3): 13-15.

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Application of Rotary and Percussion Drillings in Bored Cast-in-Place Piles in Karst

CHEN Fei1，CHEN Huaren2, WANG Zhaohui3   

  1. (1.Jiangxi University of Science and Technology，Ganzhou Jiangxi 341000;2.Wuhan Geological Survey and Foundation Engineering Co., Ltd., Wuhan 430030;3.Yangtze River Scientific Research Institute, Wuhan 430010)
  • Received:2012-09-03 Online:2013-06-20 Published:2013-06-26

Abstract: The subsurface conditions of the Taoyuanchun Residential Development are complicated. The bored castinpace piles are to be installed in the highly developed karst terrain with rock caverns and pinnacles. The combination of rotary and percussion drilling techniques are used found to be the optimum installation method. This paper summarizes the construction techniques of this combination method.

Key words: Karst, Bored Cast-in-Place Piles, Rotary Excavation, Percussion Drilling, Technical Measures