Abstract：Research purposes: Cast-in-situbored pileis a main foundation mode at present.With continuous improvement of equipments, the technology of boring and casting of water concrete is consistent practiced.However, some accidents still occur, both the country and the companies will bear economic losses.Cast-in-situ bored pile is one of typical concealed works.Technological control during construction process will deter mine the quality of completed piles.For this reason, it is necessary to research every link of which cause toaccidents.
Researchconclusions:Unexpected factors may occur during every process of the construction of Castin-situ pile.This paper aims to research every process of construction both boring and casting of water concrete.It starts with the Identifying of the diagnosis analyzing the causation andc ombining of theoretical research and practice summary, and then points out protection and treatment technical easures of accident.Therefore, accident will be prevented from the beginning, the quality of completed cast in-situ piles will be guaranteed.
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2011, Vol. 28 
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