| 摘要 |
FIELD: mining.SUBSTANCE: method for construction and support of mines under complicated mining and geological conditions includes formation of an unloading cavity in front of a bottomhole with irreducible advancing, introduction of two rows of pneumatic balloons with a shield into the unloading cavity, lifting of the shield to the level of the mine roof, creation of a thrust between the cavity roof and pneumatic balloons by means of compressed air supply into pneumatic balloons, extraction of rock under the shield by the pitch of permanent support frames installation, and installation of stands and the beam of the permanent support under the shield. At the same time an additional unloading cavity is developed in the mine sides, and installation of the permanent support beam is carried out between rows of pneumatic balloons from the cavity of the mine arranged in the sides. Afterwards the permanent support stands under the shield are fixed to the support beams, the thrust is removed from the pneumatic balloons of the first row by means of exhaust of compressed air, and pneumatic balloons are extracted into the fixed part of the mine. Rock under the shield is removed by the pitch of permanent support frames installation, the thrust is removed from the pneumatic balloons of the second row by means of exhaust of compressed air, and pneumatic balloons are extracted into the fixed part of the mine. Then the unloading cavity is constructed to the initial depth, and operations are repeated.EFFECT: higher efficiency and safety of construction and support of developing entries under complicated mining and geological conditions.7 dwg |
