Universally applied coal mine underground reservoir and construction method thereof

Abstract

The invention provides a universally applied coal mine underground reservoir. The universally applied coal mine underground reservoir can be universally applied to the structural design of the coal mine underground reservoir under various geological conditions, and comprises a coal pillar dam body formed around a coal mine goaf, a top plate above coal mine goaf space, a bottom plate under the coalmine goaf space and a mould bag construction body arranged between the top plate and the bottom plate and playing a supporting role, water storage space of the underground reservoir is formed in themiddle of the mould bag construction body, and an injecting paste material in the mould bag construction body is formed by matching aggregate processed by mine waste gangue or building debris, cementand water. The invention further provides a construction method of the universally applied coal mine underground reservoir. The universally applied coal mine underground reservoir and the constructionmethod thereof can be universally applied to the design and construction of the coal mine underground reservoir under the various geological conditions, and can also ensure the capacity of the reservoir.

Description

technical field [0001] The invention relates to the interdisciplinary technical field of mining engineering and water conservancy engineering, and in particular to a universal coal mine underground reservoir applicable to various geological conditions and a construction method thereof. Background technique [0002] The construction of coal mine underground reservoir has become an important project for mine water treatment, storage and utilization. The distributed underground reservoirs in Daliuta Coal Mine of Shenhua Group that have been built in China provide effective technical support for the protection and utilization of groundwater resources in coal mining in the western region. The geological conditions of Daliuta Coal Mine are simple, and the lithology of the overlying strata above the coal seam is mainly siltstone and fine sandstone. The fractured rock mass structure formed after the roof collapsed has obvious advantages in water conduction and water storage. For mo...

AI Technical Summary

Problems solved by technology

In addition, when the roof collapses, the broken mudstone swells when it encounters water, and the mudstone powder easily swells and blocks the fracture storage channel when it meets water.

Therefore, the construction of coal mine underground reservoirs under the geological conditions with mudstone as the roof will not only easily greatly reduce the storage capacity of the reservoir, but also be very unfavorable for water transfer and water use between reservoirs.

In addition, coal mines often encounter complex geological conditions such as "three soft", strong rock burst and multi-level structures. The utilization rate and use effect of coal mine underground reservoirs constructed under such geological conditions will be greatly reduced

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