Horizontal fissure fluctuation leaching mining method
A mining method and leaching technology, which is applied in the field of mining method and wave leaching mining method, can solve the problems of leaching dead angle, low mining speed in low-permeability areas, and high drilling cost.
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[0045] The present invention will be further described below in conjunction with the drawings and embodiments:
[0046] 1. About preparations
[0047] Through some existing treatment measures (such as: vacuum method, aeration method, gas displacement, etc.), part of the water in the ore layer (3) is discharged to form an unsaturated rock mass (the pores of the rock mass are not completely liquid), so as to contain The highly compressed mixed fluid of the leaching agent enters the hypotonic area.
[0048] 2. About the steps ①
[0049] The prerequisite for producing a horizontal fissure surface (2) is that the entire ore bed has good sealing conditions (cap rock and floor rock with smaller permeability relative to the ore bed); at the same time, the cap rock and floor have higher strength relative to the ore bed, reducing the level The probability that the cracks develop from the cap rock or the bottom plate ensures that the horizontal cracks are only generated from the ore layer. G...
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