The invention discloses a vacuum preloading combined electric
osmosis test apparatus. The vacuum preloading combined electric
osmosis test apparatus comprises a test
barrel, a pressurizing
system, anair-water
separation system, an
electrode loop and a
data acquisition system; the test
barrel comprises a
barrel body and a barrel cover as well as a sand mat with the top surface covered with a sealing film; the pressurizing
system comprises a pressurizing guide
pipe, a pressure chamber, an air supply guide
pipe and a pneumatic device which are successively connected with one another as well as afirst electronic scale; the air-water
separation system comprises a water discharging guide
pipe, an air-water separation apparatus, an air exhaust guide pipe and a
vacuum pump which are successivelyconnected with one another as well as a second electronic scale and a vacuum gauge; the
electrode loop comprises an
anode, an
ampere meter, a power supply and a
cathode flexible water discharging
assembly which are serially connected by virtue of a conducting wire, and the
cathode flexible water discharging
assembly is a two-layer nonwoven geotechnical cloth tubular bag with an inner layer of bagged
graphite particles and an outer layer of bagged sand; and the
data acquisition system comprises various sensors as well as a data acquirer and a computer. The vacuum preloading combined electric
osmosis test apparatus can perform the indoor research test for different
soil test samples under the combined or
independent action of vacuum prepressing, preloading and electric osmosis water discharging.