The invention provides a test device and a test method capable of simulating
water pressure in a tunnel. The test device comprises a load loading mechanism, a
monitoring system and a counter-force mechanism. The load loading mechanism comprises a plurality of flexible cells and a liquid filling pump, wherein every two adjacent flexible cells are communicated with each other to form a closed structure body fitting a lining ring section, and a liquid filling
pipe on one of the flexible cells is connected with a liquid outlet of the liquid filling pump. The
monitoring system comprises stressometers,
steel bar meters,
fiber grating sensors, multi-point displacement indicators, osmometers and joint meters, wherein the stressometers and the
steel bar meters are embedded into a lining, the
fiber grating sensors are arranged on the inner and outer surfaces of the lining, the multi-point displacement indicators, the osmometers and the joint meters are embedded into a surrounding rock, and the
signal output end of each sensor is connected with a
data acquisition unit. The counter-force mechanism comprises a counter-force H-steel piece and a counter-force supporting piece which are fixedly connected with each other, one side of each flexible
cell is arranged correspondingly to the lining ring section, and the counter-force supporting piece supports the other side of each flexible
cell. The test device is capable of simulating detection of the concrete lining construction quality and prestress applying effect during operation of the tunnel filled with water.