The invention provides a geologic environment
simulation experiment device, which comprises a
machine stand, a
water storage tank, a
simulation case with its lower reach end hinged with the
machine stand, a rainfall case installed at the top of the
machine stand, a geologic body
simulation cavity in the simulation case, a
water supply cavity and a
water discharge cavity that are respectively positioned at the upper and lower reach ends of the geologic simulation cavity and are communicated to the geologic body simulation case, a conatant head
water level overflow case and a
discharge overflow case that are respectively positioned at the external side end of the upper and lower reaches of the simulation case, a conatant head overflow cavity that are respectively communicated to the
water storage tank and the
water supply cavity via a pipeline and a conatant head overflow backwater cavity that is communicated to the
water storage tank via an overflow backwater
pipe are positioned in the conatant head
water level overflow case; at least three groups of
piezometer are mounted vertically on the wall of the simulation cavity; one end of a
piezometer hose that is communicated to the bottom of the
piezometer passes the a simulation wall and extends into the simulation cavity. Therefore, the invention is able to simulate the formation and control of geologic disaster as well as the rules for the motion of
groundwater.