The invention discloses a water bag device provided with
water tanks and used for simulating pressure-bearing water. The water bag device comprises the
water tanks, a supporting frame, and a
coal layer and a rock layer which are erected on the supporting frame. A pressure-bearing water-containing layer is arranged in the rock layer. The
water tanks are of the same specification. Each water tank comprises, from top to bottom, an upper
pipe body (401), an upper tank body (402), a lower
pipe body (403) and a lower tank body (404) which are communicated sequentially, wherein the upper end of the upper
pipe body (401) is provided with a pipe opening, the upper portion of the upper pipe body (401) is provided with a non-scale area, the lower portion of the upper pipe body (401) is provided with a scale area, the upper portion of the lower pipe body (403) is provided with a scale area, the lower portion of the lower pipe body (403) is provided with a non-scale area, and scales are arranged on the pipe walls of the scale areas. By means of the similar
simulation test device and method of the water-containing layer for
coal production under pressure-bearing water, pressure-bearing water can be similarly simulated when the water-containing layer exists in the upper covering rock layer in the production process of the
coal layer.