Way to create impervious screen at reservoirs AFTER DRIVING CAREERS

摘要

Method plugging impervious screen on the bottom of the quarry, reservoir after working it, comprising injecting a filling material and restraint prior to curing, characterized in that as filling material in the lower part of the impervious screen comprising dolerite rock pumped cement-sandy solution under pressure exceeding hydrostatic, through wells drilled from underground, and after curing create a breed-cement layer impervious screen tamponiruyut local injections of polymer kriogeleobrazuyuschih cryogels-1 compositions based on polyvinyl alcohol (PVA) at a pressure less than the pressure gap thickness of the ore protective pillar, left under the impervious ekranom.2. A method according to claim 1, characterized in that the cement-sand mortar is pumped under pressure 0.7-0.8 MPa.3. A method according to claim 1 and / or 2, characterized in that the cement-sand mortar injection is prepared with 2% addition of calcium chloride (CaCl (2%). 4. The method according to claim 1 and / or 3, characterized in that in cement-sand mortar is introduced as the filler solids tails concentrator fabriki.5. a method according to claim 1, characterized in that the local injection of the gels is carried out at a pressure of 0.5-0.6 MPa.6. a method according to claim 1, wherein the cryogel is injected composition at 1% by weight ratio of the components: polyvinyl alcohol (PVA) - 3-7bornaya acid - 0.2-1.0voda - the rest..