| 摘要 |
PURPOSE: A repair method of a manhole is provided to repair a manhole without cutting the surrounding of a manhole frame. CONSTITUTION: The repair method of a manhole comprises the steps of heating and deliquescing the surrounding asphalt pavement of a manhole by far infrared heaters(11,31,33), separating binder and aggregate by scooping the asphalt pavement to expose a bolt, unfastening a manhole frame by separating a nut from a bolt, fitting a lifting pawl(23) to the manhole frame, then lifting up the manhole frame by operating a jack(20) with reaction force from a casing(1) and letting an edge(13) of the casing(1) into the loosed road surface to a depth of 2-5 centimeters by reaction force, and cutting the border with the surrounding pavement to dismantle the manhole frame.
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