发明名称 METHOD FOR FLOODED WATER-SOLUBLE MINERAL SALT DEPOSIT DEVELOPMENT
摘要 FIELD: mining, particularly to develop water-soluble mineral deposit deposited in enclosing impermeable rock bordering on flooded rock. ^ SUBSTANCE: method involves mining mineral salt reserves with cutting and/or drilling-and-blasting methods in chambers to impart naturally stable vault shape to chamber cross-section; cutting chamber by driving technological heading in upper chamber part so that the technological heading has convex curvilinear roof inscribed in the naturally stable vault, wherein the technological heading may comprise lining and has parameters providing long-tern stability thereof. Current chamber width and safety pillar base width are determined from mathematical expressions. ^ EFFECT: increased mining safety along with retention of mineral salt production level. ^ 1 dwg
申请公布号 RU2307935(C2) 申请公布日期 2007.10.10
申请号 RU20050130615 申请日期 2005.10.03
申请人 STARTSEV VLADIMIR ANDREEVICH 发明人 STARTSEV VLADIMIR ANDREEVICH
分类号 E21C41/20 主分类号 E21C41/20
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