Horizontal well leaching mining method

Abstract

The invention discloses a horizontal well leaching exploitation method, which relates to a mining method. The invention comprises the procedures that: (1) a horizontal section (13) and a vertical section (14) of a horizontal well (10) are formed in a manto (30) by the horizontal well technology; (2) injection wells (11) and recovery wells (12) which are alternately spaced and arranged are formed; (3) mining is carried out according to the traditional in situ leaching method. The invention can considerably reduce the amount of the drilling holes of the original hole of the whole in situ leaching method and considerably reduce the cost of leaching exploitation; at the same time, the influence on the recovery rate and recovery scope caused by the positions of the injection wells (11) and the recovery wells (12) is reduced; the leaching dead corners are reduced. The invention is suitable for the leaching exploitation field of uranium, copper, aurum, rare earth and so on.

Description

technical field [0001] The invention relates to a mining method, in particular to a horizontal well leaching mining method, which is widely used in the field of leaching mining of uranium, copper, gold, rare earth, zinc and other minerals. It is especially suitable for leaching mining of mineral deposits with deep buried deposits and thin deposits. Background technique [0002] The traditional in-situ leaching mining method is to inject a leaching agent under a certain constant pressure in the injection well, and the leaching agent will physically and chemically react with certain minerals in the ore seam to form a leaching solution, and directly extract the leaching agent in the recovery well. Immersion, to obtain useful minerals through the leaching solution. Recovery rate and recovery speed are important indicators of solution mining, an indicator to measure the improvement of resource utilization rate, and an important basis to measure the status of solution mining. Th...

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Problems solved by technology

[0005] ① It is necessary to set up many injection wells and recovery wells, and the cost of drilling in the entire solution mining is very large and very expensive;

[0006] ②At the same time, the influence range of leaching is affected by the relative positions of the injection well and the recovery well, and the leaching range and leaching intensity are affected by the drilling layout, and there are leaching dead angles.

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