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Perfusion accident prevention and handling of the bored pile

Pouring underwater concrete impact of bored piles into piles key process in the perfusion process, the slightest mistake or control is not in place, there will be large or small perfusion accident, so must be taken in the perfusion process a series of strict quality control measures and common perfusion accident cause analysis, and timely summarize some of the prevention and treatment.

Bored pile is a pile foundation in common a basic form, is widely used in housing construction, water conservancy construction and pier foundation construction, and construction of a wide range of high technological content, impact factors, if the slightest mistake or quality control measures in place, there will be large or small, the quality of accident, pouring underwater concrete pile critical drill edm processes that affect the pile quality control an important part in the perfusion process, must be a clear division of labor, close with the unified command, to achieve rapid, continuous construction, infusion into the high-quality underwater concrete to prevent quality accident.

A catheter in the water of the main reason

(1) the first batch of concrete reserves While the concrete has enough reserves, but the distance between the end of the catheter end of the mouth away from the hole is too large, the concrete under the backward end of the conduit is not buried the mouth, resulting in muddy water to enter the mouth from the bottom.

(2) catheter connector lax joints rubber pad between the catheter high pressure airbags squeeze, weld rupture, water inflow from the joints or welds.

(3) enhance the excessive catheter, or sounding an error, the catheter end of the mouth, beyond the concrete surface, the end of the mouth into mud.