End-to-end jointing water soluble exploitation method of mirabilite mine

Abstract

The invention discloses a docking connected solution mining method for mirabilite salt mine, which comprises following procedures. (1) Two connected horizontal wells are drilled on main reaction seam as the mining channel; after each horizontal well is built in three-segment deflecting it achieves the cave of main reaction seam and is connected with the cave; the upper soft sedimentary stratum and the flow sand seam are enveloped respectively; the mining open-hole channel is only maintained in the main reaction seam. (2) Brine is mined in said mining channel. The merit is that not only the mining cost is low and the brine concentration is high but also the mining speed is astonished; two wells are the mining well group and the ore-controlling area is big; the method avoids the phenomena of single-well convection frequent plugging well; the production flow is simple and easy; and the mirabilite mining efficiency is improved greatly, the mining cost is decreased.

Description

Technical field: [0001] The invention relates to the field of mining, in particular to a butt-connected water-soluble mining method of mirabilite ore. Background technique: [0002] In mining, open-pit mining is often used for some shallow ore bodies, while tunnel mining is generally used for ore bodies with a certain burial depth. However, for some rock salts such as Glauber’s salt ore, because the minerals are easily soluble in water, drilling and mining methods are usually used to obtain useful substances such as Glauber’s salt. It can effectively achieve the purpose of mining, but thenardite minerals must be dissolved in water to be hot water, so equipment such as boilers must be installed at the wellhead, which increases energy consumption, and the nitric water coming out of the well is easy to crystallize and block pipes, causing underground accidents increase. As for the invention patent with the patent number "99114212.8": the double-well horizontal drilling connec...

AI Technical Summary

Problems solved by technology

However, for some rock salts such as Glauber’s salt ore, because the minerals are easily soluble in water, drilling and mining methods are usually used to obtain useful substances such as Glauber’s salt. It can effectively achieve the purpose of mining, but thenardite minerals must be dissolved in water to be hot water, so equipment such as boilers must be installed at the wellhead, which increases energy consumption, and the nitric water coming out of the well is easy to crystallize and block pipes, causing underground accidents increase

As for the invention patent with the patent number "99114212.8": the double-well horizontal drilling connected water solution mining method in Glauberite Mine, this method is suitable for the special geological conditions of the Yellow River alluvial strata in Dalate Banner, Inner Mongolia: the geological conditions of the Yellow River alluvial strata are complex and soft sediments stratum and quicksand layer, the formation of Glauber's salt ore mining, can not be mined by this method at all

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