Novel anti-seepage coal mine shaft and preparation method thereof

Abstract

The invention provides a novel anti-seepage coal mine shaft and a preparation method thereof. The shaft comprises an outer cylinder wall and an inner cylinder wall, wherein a gap is arranged between the outer cylinder wall and the inner cylinder wall and is filled with a water isolating material; a plurality of transverse construction planting seams are arranged in the depth direction of the outer cylinder wall in a spaced manner and water-stopping copper sheets are separately arranged on the plurality of construction planting seams; and the shaft successively passes through a frozen surface soil section, a frozen bed rock section and a unfrozen section from top to bottom. The construction planting seams obtained by wall construction by means of a step-like wall injection molding mold are step-like too. The construction planting seams can prolong a permeating channel and improve the anti-seepage property. The arc-shaped water-stopping copper sheets which are arranged on the construction planting seams are good in water-stopping effect and can effectively prevent water in a soil layer from flowing into the shaft. The problem of seepage water of the shaft is effectively solved by various blocking manners. The coal mine shaft provided by the invention is simple in structure and good in anti-seepage effect, and the anti-seepage operating method is concise and easy to operate.

Description

technical field [0001] The invention relates to the technical field of coal mine well construction, in particular to a newly built anti-seepage coal mine shaft and a preparation method thereof. Background technique [0002] At present, the frozen wall of the newly built coal mine shaft using the freezing method sinking technology will leak water after thawing, and even serious water inrush accidents will occur, which not only threatens the life safety of underground miners, but also brings huge losses to coal mining enterprises. Therefore, it is very necessary to find a method to cure wellbore water leakage from the source. [0003] The outer wall of the coal mine shaft is excavated in sections, and there are inevitably construction stubble joints during the construction process, which provides an obvious channel for groundwater to infiltrate into the shaft. Therefore, how to effectively improve the anti-seepage ability of the shaft wall concrete at the construction stubble...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems such as water seepage accidents that are very easy to occur in the newly-built coal mine shaft in the above-mentioned prior art, thereby causing problems such as miner life safety problems and enterprise economic losses, and provide A new anti-seepage coal mine shaft and its preparation method

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