Soil Engineering and Foundation

›› 2016, Vol. 30 ›› Issue (4): 440-442.

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Application of the Deep Borehole Pre-Splitting Blasting in the Excavation of Vertical Shaft for a Hydraulic Structure

FEI Botao1, XU Kun2   

  1. (1.The First Engineering Company, China Gezhouba Group Co., Yichang, 443000;
    2.Hubei Key Laboratory for Roadway Bridge and Structural Engineering, Wuhan University of Science and Technology, Wuhan 430070)
  • Received:2016-06-13 Online:2016-08-20 Published:2016-08-26

Abstract: This paper presents a case history of application of the 30 meters deep borehole pre-splitting blasting technique in the excavation of a vertical shaft for the flood discharge tunnel in Houziyan Hydroelectricity Station. The quality requirements for the excavation were achieved; the construction safety as well as the construction schedule were able to be met. This deep borehole pre-splitting blasting is proved to be a viable way for the vertical shaft excavation.

Key words: Pre-Splitting Blasting, Deep Boreholes, Vertical Shaft for Hydraulic Structures, Construction Excavations, Houziyang Hydroelectricity Station