Experimental investigation on the hazard of geyser created by an entrapped air release in baffle-drop shafts.

ABSTRACT: The geyser phenomenon seriously threatens the safe operation of deep tunnel drainage systems and drop shaft structural safety. To simulate the geyser process in a baffle-drop shaft, a 1:50 scale model test system was used to research the response relationship between the geyser mechanism and test parameters such as water depth, inlet pressure, and inlet volume. The results show that the pressure in a baffle-drop shaft fluctuates sharply during the geyser process. This is caused by the release of a high-pressure air mass, and high-speed movement of the air-water mixture causes a local pressure imbalance in the drop shaft. A prediction formula for the maximum geyser height of a baffle-drop shaft was established by a multiple linear regression model. Geyser occurrence conditions for the baffl

SUBMITTER: Yang Q 

PROVIDER: S-EPMC10188609 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature