Experimental setup for measuring the vacuum degree and pore pressure at a point of soil mass in vacuum consolidated state and the test operation method thereof

An experimental setup for measuring the vacuum degree and pore pressure at a point of soil mass in vacuum consolidated state, including a connecting tube, the connecting tube including an upper water storage tube, a middle tube, an intermediate inner chamber and a lower tube abutting each other,

• wherein the middle tube is loaded with an upper experimental soil mass, the lower tube is loaded with a lower experimental soil mass, a filter membrane is arranged at the upper and lower ends of the soil masses in the middle tube and lower tube respectively, the filter membrane is pervious, the upper water storage tube stores distilled water, the lower tube is connected to a water storage chamber through an inlet conduit, the water storage chamber is connected to a pumping mechanism through an outlet conduit, a body of the water storage chamber is sealed, the intermediate inner chamber is connected to an upper negative pressure vacuum gauge, the inlet conduit is connected to a lower negative pressure vacuum gauge.