Laboratory study on underground water inflow (water leakage) path and related hydrodynamic parameters in tunneling

摘要

water inflow can often occur during tunnel construction, which affects the construction safety or operation safety greatly , and even results in disaster when prevention measures are not correct taken. Through tunnel construction a new drainage channel is formed and the conditions of recharge, flow, drainage are locally changed. So the conditions of recharge, flow, drainage in tunnel zone must be firstly estimated in order to put forward the countermeasures for water inflow disaster. The author attempts to research into the underground water flow path in tunnel and estimates the hydrodynamic parameters through various tests in order to provide reliable geological theoretical basis for the prevention and treatment of tunnel water inflow.