Diverging airbag dam-protection structure for coal mine underground reservoir

Abstract

The invention particularly discloses a diverging airbag dam-protection structure for a coal mine underground reservoir. The diverging airbag dam-protection structure comprises an I-shaped connector, adam-protection airbag, diverging columns, an artificial dam body and isolation coal pillars; the artificial dam body is designed as an I-shaped-like structure and mutually connected with the surrounding isolation coal pillars, and it is ensured that a dam body on an inner layer of the reservoir is flat; the diverging columns are built in the front of a dam, are each in a water drop shape, and canbe divided into front-end wave making columns and tail-end wake flow columns, the front-end wave making columns are each designed in a spherical shape for reducing the wave making resistance of a water body and diverging the water body, and the tail-end wake flow columns guide the diverged water body to flow so as to form different water body pressure distribution structures by dividing; and thedam-protection airbag is fixed between the diverging columns and the dam body, the rear part of each diverging column corresponds to a wave stop bag, gaps between the diverging columns correspond to force-unloading bags, the amount of filling gas in the dam-protection airbag is 60%-80% of the total filling amount, after the high-pressure water body behind the wake flow columns impacts to the wavestop bags, the gas escapes to the force-unloading bags, the force-unloading bags are pressed after turbulence of the water body, and the gas flows back to the wave stop bags.

Description

Technical field: [0001] The invention relates to the field of abandoned mine underground reservoirs, in particular to a coal mine underground reservoir diversion air bag dam protection structure. Background technique: [0002] Large-scale and high-intensity mining of coal mines will bring different degrees of disturbance and impact on the natural environment, ecological environment and geological structure environment of resource occurrence in the mining area. When the carrying capacity of the regional environment is exceeded, the regional balanced environmental conditions will suffer. to destruction. Among them, coal mining caused the structure and integrity of the roof overlying rock to be destroyed, resulting in a change in the new water circulation mode of the aquifer from interlayer runoff to vertical runoff, thus making most of the roof sandstone weak aquifer and Quaternary phreatic water aquifer Underground water infiltration (burst) into the goaf of the mine. There...

AI Technical Summary

Problems solved by technology

[0003] However, the water pressure of the reservoir has brought challenges to the water storage capacity of the coal mine underground reservoir and the safety of the dam body of the reservoir. Therefore, the present invention proposes a diversion airbag dam protection structure of the coal mine underground reservoir, which uses a diversion column to divert the water body, and uses Use the air bag to balance the water pressure everywhere, effectively achieve the purpose of unloading the dam

Images