Coal mine underground reservoir assembly type arc-shaped artificial dam body and construction method thereof

Abstract

The invention discloses a coal mine underground reservoir assembly type arc-shaped artificial dam body and a construction method thereof. The artificial dam body is arranged between adjacent coal pillar dam bodies, wherein the artificial dam body is composed of a dam body base, wing plates on the two sides and an arc-shaped dam body, the dam body base, the wing plates and the arc-shaped dam body are all formed by assembling a plurality of modules, the dam body base is provided with grooves for embedding the wing plates on the two sides and the arc-shaped dam body, the wing plates on the two sides are also provided with grooves for embedding the arc-shaped dam body, the dam body base and the wing plates are provided with anchor rods, and the artificial dam body and surrounding rock mass can form a stable whole. The convex face of the arc dam body faces the underground reservoir, force is partially decomposed to the coal pillar dam bodies on the two sides, direct stress of the dam body is reduced, and therefore the thickness of the dam body is reduced; and by quantifying the size of the artificial dam body, building a standard dam body module on the ground and quickly assembling underground, the problems of long construction period and high manufacturing cost of the underground reservoir of the coal mine are solved, and the dam body can be prevented from instability damage and water seepage.

Description

technical field [0001] The patent of the present invention relates to the technical field of underground reservoir construction, in particular to an assembled arc-shaped artificial dam body of an underground reservoir in a coal mine and a construction method thereof. Background technique [0002] "Rich in coal and poor in water" is the characteristic of natural resources in western my country. Large-scale and high-intensity coal mining will cause a large amount of mine water to be discharged. On average, about two tons of mine water will be produced for every ton of coal mined. The great loss of groundwater resources, but also the pollution of the surrounding environment. In order to solve the contradiction between the protection of water resources and the utilization rate of coal resources, some mining areas have proposed the concept of "guiding and storing" mine water, using the goaf formed by coal mining as a water storage space, and combining the protection of coal pillar...

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Problems solved by technology

[0006] Aiming at the problems of long construction period, high construction cost, and prone to instability and water seepage of the existing coal mine underground reservoir, the present invention provides an assembled arc-shaped artificial dam body of the coal mine underground reservoir and its construction method. The artificial dam body The construction of the dam is realized through rapid assembly, which improves the construction efficiency, reduces the construction cost, and prevents the dam from being unstable, damaged, and seepage

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