SU883359A1 - Method of mining minerals by subterranean leaching - Google Patents

Description

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The invention relates to mining and can be used in the development of ore deposits.

There is a method of mining minerals by underground aiming, which includes shaping the irrigation horizon by sweeping the upper part of the block over the whole area, driving the production of the solution catch horizon, drilling blast holes, blasting the mineral, installing the irrigation system on the irrigation horizon, irrigating the crushed mineral with leaching, and leaching the irrigation system on the irrigation horizon, irrigating the crushed mineral with leaching, and leaching the irrigation system on the irrigation horizon, irrigating the crushed mineral with leaching, and leaching the irrigation system on the irrigation horizon, irrigating collection of productive solutions on the horizon of capture 1.

There is also known a method for the extraction of minerals by underground leaching, which includes preparing the block by shaping the irrigation horizon in the upper ore part of the block, sinking the production horizon for solution trapping, drilling the reviving wells from it, discharging it with an explosive within the ore part of the block and explosively crushing the ore, and irrigating the crushed

2

ores leaching solution and the collection of productive solutions on the horizon of capture 2.

The disadvantages of the known methods are the high costs of conducting preparatory work for the design of the irrigation horizon by driving openings, as well as the increased danger of work in the workings of the irrigation horizon, especially when cutting the block over its entire area.

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The purpose of the invention is to reduce costs and ensure safety during the preparatory work.

This goal is achieved in that the irrigation rizont is formed by hydraulic fracturing followed by filling the fractures with filtering material, at least a part of the revolving wells are drilled to the intersection.

Claims (1)

20 with the indicated cracks, and irrigation of the developed ore is carried out by feeding the leach solution into the fracture fractures. FIG. 1 shows a longitudinal vertical section of an in-situ leaching unit that implements the proposed method; in fig. 2 shows section A-A in FIG. 1. Above the ore body 1, located in the host rocks 2, passes the well 3, from which a hydraulic fracturing is performed in the above-ore part of the developed section (block). One or several cracks 4 formed during the fracturing process are filled with filtering material 5, for example sand. In the lower part of the section (block), the development of the 6th catchment horizon takes place, the revolving 7 are drilled from the wells. A part of the wells 7 are drilled up to the intersection of 4 fractures with cracks. Within the ore body 1, the borehole 7 is charged with explosive 8 and the ore is crushed into a compensation space that has previously formed within the ore part. block. Thus, the ore crushed in such a way is irrigated with a leaching solution by feeding the latter through well 3 into fractures 4. From crack 4, filtering on material 5, the leach solution through unexplored parts of wells 7 intersecting cracks 4 is post-crushed to ore, from which it is saturated with a useful component, in the form of a productive solution goes to the production of the capture horizon 6, where it is produced his collection with the subsequent transfer for recycling. The use of the proposed method reduces the costs (monetary, material) for the creation of an irrigation horizon due to the abandonment of preparatory mining workmanship associated with the penetration of the insurgents and the top of it; reduces the time it takes to create an irrigation horizon; increases, without the need for, the work associated with the creation of a mountain irrigation system; simplifies the cultivation technology (operation of irrigation horizon) due to failure; from pipelines, intermediate pumps, means of control and others. Formula of the invention A method of mining minerals by underground targeting, including preparing a block by shaping the irrigation horizon in the above-ore part of the block, penetrating the production horizon of the solution, drilling out of it from the rising wells, charging them with an explosive in the limits of the ore part of the block and the explosive crushing of the ore, the irrigation of the crushed ore by the leach solution and the collection of productive solutions on the capture horizon, differing Since, in order to reduce costs and increase safety in the preparatory work, the irrigation horizon is formed by hydraulic fracturing followed by filling the fracture of the fracturing with filtering material, at least some of the recovery wells are drilled to the intersection with the specified fractures, and irrigation is diluted The ores are made by feeding a leach solution to fracture fractures. Sources of information taken into account when examining 1. Lunev L. I., Rudakov I. Ye. Underground. metal leaching systems. M., Tsvetmetinformatsi, 1974, p. 32-35. 2i Lunev. G1. I., Rudakov I. Ye. Underground metal leaching systems. M., Tsvetmetinformatsi, 1974, p. 35-37 (prototype). d ./