Research on the model test system of shaft lining interacting with enclosure rock under deep and high water pressure

Based on the aquifer rock condition in west-northern coal mine China and the general mechanical and seepage differential equations, firstly, the similarity criterion related to interaction of water, surrounding rock and shaft lining were derived, then the shaft test device had been made according to the mechanical model of plain strain cylinder, showing especially in the aspect of structure and technology of gravity loading and pore pressure loading system. Thirdly, based on real tests and Comsol Multiphysics, numeral model test concerned coupling fluid and solid were carried out accordingly. Contrasting analysis among test, analytic calculation and FEM model would offer good reference for further model tests. The newly model tests device based on interaction of water, surrounding rock and lining are helpful to solve the problem of lining design for the strata of high pressure water.