Remove the manhole cover and dredge the wellhead.
Cut off the parts that need to be broken with a cutting machine to ensure that the sideline is straight. In the case of serious damage to the nearby pavement, it needs to be removed and poured again.
Clean wells and rainwater outlets.
Before pouring the borehole wall, please ensure that the well and rainwater outlet are cleaned and accepted. Steel formwork shall be used for concrete formwork to ensure accurate and firm installation position, tight joints and no slurry leakage. Vibrate with an internal vibrator to avoid honeycomb pits after formwork removal. Timely maintenance, and lien test block.
deposit concrete
Before pavement pouring, clean the base and pour concrete. Use a flat vibrator to ensure the concrete is dense.