Similar simulation testing device and method for closed coal mine underground reservoir

Abstract

The invention provides a similar simulation testing device and method for a closed coal mine underground reservoir. Adjusting grooves are formed in a base of the device, two left columns and two rightcolumns are arranged on the base, multiple baffles are detachably connected between the left column and the right column on the same side of the base, a cross beam is arranged between the upper end of each left column and the upper end of the corresponding right column, loading compression heads are arranged on the cross beam, a material box with a front face, a back face and an upper face openedis arranged on the base, multiple lifting blocks are placed in a lifting groove of the material box, the lifting groove is in threaded connection with multiple threaded columns, a water blocking bagwith an opened upper portion is nested in the material box, a water bag and a plurality of water pressure gauges are placed in the water blocking bag, the water bag is connected with a water supply unit through a water inlet pipe, and the water pressure gauges are connected with a monitoring unit through signal lines. The similar simulation testing device has the advantages that the process of forming the closed coal mine underground reservoir after the single working face of a coal mine is exploited can be more accurately simulated, and the capacity of the reservoir can be more accurately measured and calculated.

Description

technical field [0001] The invention relates to the technical field of mining engineering simulation tests, in particular to a similar simulation test device and method for a closed coal mine underground reservoir. Background technique [0002] Large-scale coal mining often connects aquifers and aquifers to form water-conducting channels, resulting in groundwater leakage and migration underground to form mine water. In order to ensure the safety of underground production, mine water is usually drained to the ground, resulting in a large amount of evaporation loss of mine water, and at the same time causing surface soil salinization, which is particularly evident in the arid regions of the west. my country produces about 8 billion tons of mine water each year due to coal mining, and the utilization rate is only about 25%. The mine water resources lost in coal mining are equivalent to 60% of my country's annual industrial and domestic water consumption. In order to protect th...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a similar simulation test device and method for a closed coal mine underground reservoir, to solve the problem that the current simulation test cannot accurately simulate the formation process of the closed coal mine underground reservoir and cannot accurately measure the storage capacity of the reservoir

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