Physical Simulation of Water Inrush through the Mine Floor from a Confined Aquifer

摘要

A physical simulation test system was designed to study the mechanism of water inrush through the mine floor. The results showed that vertical stress in the floor first increased as the mining face approached, then decreased after the face had passed, and finally returned to near its original state as the mine roof falls. At about the same time, the floor first experienced compression as the mining face approached, then heaving after the face had passed, and finally recompression to a position that was a little higher than its original height. Water inrush occurred before the first weighting of the roof but there were no subsequent water inrushes.