Slurry surface detection and slurry supplementing method for grouting sleeve

The invention relates to a slurry surface detection and slurry supplementing method for a grouting sleeve. The method comprises the following steps of (1) assembling prefabricated parts; mounting a slurry surface detection and slurry supplementing device; (3) performing grouting; (4) detecting the inner grouting surface of the grouting sleeve: observing the height change of the inner slurry surface of a display tube, until slurry is solidified after grouting is completed, and after it is observed that the slurry level of the display tube declines or the height of the inner slurry surface of the display tube is lower than a preset height, performing the step (5); and (5) performing slurry supplementing: connecting a grouting device with a slurry supplementing tube, and performing the slurrysupplementing on the interior of the grouting sleeve through a slurry supplementing device. The slurry height and the slurry height change condition in the grouting sleeve can be observed, so that real-time monitoring data i