THE PRACTICE OF CLEANING WATER INJECTION TUBE BY WATER FLOW WITH

It is very difficult to get rid of the rubbles in thebarometer tube, as the diameter of the barometer tube used formonitoring the dam base water pressure is very small. Through various attempts, avery efficient way is found, which is proved workable in practice. Simulated experiments show its clear dynamical states.By analyzing the pellet's dynamical states, it is shown that the process of the pellet's discharge can be clearly explained.