The invention relates to the technical field of tunnel cleaning, in particular to a water-rich tunnel desilting device which comprises a walking
robot, a cleaning mechanism is mounted at one end of the walking
robot, a crushing mechanism is mounted on the cleaning mechanism, a filtering mechanism is mounted on the crushing mechanism, and a connecting mechanism is mounted on the filtering mechanism. A
protection mechanism is mounted on the filtering mechanism, and a driving mechanism is mounted on the cleaning mechanism; through cooperation of the cleaning mechanism and the walking
robot,
sludge in a tunnel can be shoveled and conveyed, through the crushing mechanism, the shoveled
sludge can be damaged, through cooperation of the filtering mechanism and the connecting mechanism, the filtering mechanism can be detachably installed, and stone blocks can be blocked and pushed when the cleaning mechanism shovels the
sludge; the filtering mechanism is reinforced through the
protection mechanism, and the cleaning mechanism moves, so that the driving mechanism controls the
protection mechanism to swing back and forth on the cleaning mechanism, weeds are
cut up, and sludge is better guided out.