Teaching Experiment:

Flow net drawing: Observe changes in the water table, draw water head lines and streamlines in the seepage field, and verify the applicable conditions of Darcy's law.

Parameter inversion: Calculate the permeability coefficient by the slope of the infiltration curve, and compare the error between theoretical formulas (such as the Qiu Buyi equation) and actual measured values.

Experimental principle:

Infiltration and seepage simulation experimental deviceThe characteristics include a water storage tank with a water pump, a simulation box with a horizontal bottom plate, a water supply chamber with a water supply hole, a simulation chamber with a water bearing layer, and a drainage chamber with a drainage hole inside the simulation box. There are permeable mesh plates between the simulation chamber and the water supply chamber, and between the simulation chamber and the drainage chamber. In the constant head overflow box with an overflow groove located at the upstream end of the simulation box, the overflow return chamber outside the overflow groove has an overflow hole connected to the water storage tank through an overflow pipe. The overflow groove of the constant head overflow box has inlet and outlet holes connected to the water pump and the water supply chamber of the water storage tank through pipes. In the drainage overflow box with an overflow groove located at the downstream end of the simulation box, the overflow return chamber outside the overflow groove has an overflow hole connected to the water storage tank through an overflow measurement. The overflow hole that connects the flow pipe to the water storage tank, The overflow tank of the drainage overflow box has an inlet hole connected to the drainage hole in the drainage chamber through a pipeline. Three sets of pressure measuring tubes are vertically installed on the wall of the simulation chamber, and one end of the pressure measuring hose connected to the bottom of the pressure measuring tube is inserted into the aquifer through the simulation chamber wall. There is an infiltration device installed at the top of the simulation chamber. The infiltration device includes an infiltration box with a bottom infiltration rainfall plate, an infiltration liquid supply box located at the top of the infiltration box, an infiltration liquid pipe connected to the bottom of the infiltration liquid supply box at the top of the infiltration box, and a tracer injection box installed at the top of the simulation chamber at the upstream end. Three tracer control valves with control valves are located in the aquifer of the simulation chamber. The top of the tube is connected to the bottom of the tracer injection box.

Product specifications and configuration:

It consists of a simulation box, a stabilizing water tank, tracer control pipes, pressure measuring pipes, water pumps, storage tanks, connecting pipelines and valves, stainless steel brackets, etc.