FIELD: mining.
SUBSTANCE: proposed method comprises exposure of producing formation by production well equipped with jetting equipment and jetting of minerals. Nearby soil of developed strata horizontal drain hole is drilled for preliminary drying of working zone and creating conditions for operation of jetting in air. Note here that minerals are broken by jetting, gravity and increasing rock pressure resulted from underground water level decrease. This allows mining the minerals at strength of 3-5 MPa. Light grade well is drilled in vertical plane with drain well inclined to mouth to allow outflow of hydraulic mix by gravity and accumulated in settler. Operation of wells of hydromining complex is performed in turns. First, drain well is activated. After water level drop below giant jet nozzle, giant jet is activated. Minerals are mined by intervals in direction from bottom to mouth of operation well and with withdrawal of casing tubes.
EFFECT: higher efficiency of hydromining.
1 dwg
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