Device and method for casting concrete continuous walls along gob-side entry retaining by mining working face

Abstract

The invention discloses a device and a method for casting concrete continuous walls along gob-side entry retaining by a mining working face. A fiber flexible template is in cuboid shape or in cubicalshape, which is formed by a main body template and a top joint template and is connected with a flange, a casting opening, a reinforcing steel bar implanting opening, a spacing hole and a tiepiece. The method comprises the following steps: the fiber flexible template is manufactured in advance; the flexible template is hung over on a top plate of a coal seam through an individual hydraulic prop oran anchor rod by the flange; the exposure end of the implanted reinforcing steel bar is inserted in the flexible template through the reinforcing steel bar implanting opening; a leading screw penetrates into the spacing hole and two ends thereof are fixed by tray nuts; the casting opening is inserted with a concrete conveying pipe and is bonded; concrete is poured into the flexible template through the conveying pipe by a concrete pump; and finally the concrete continuous walls are formed. The invention has simple structure, high-speed construction, high work efficiency, good impermeability,uneasily slurry leaking property, densely filled concrete and good top joint effect, can carry out mechanized operation, adapts to the change of gradient of the roof and floor, and can be widely usedin the following industries, such as coal mine, metallurgical mine, water conservancy, underground construction and national defense and the like.

Description

technical field [0001] The invention relates to a concrete continuous wall, in particular to a device and a method for pouring a concrete continuous wall along a gob-side entry in a mining working face. Background technique [0002] Traditional mining face gobside entry retention uses wooden piles, dense pillars, gangue bags, material stone walls or concrete diaphragm walls, while the concrete diaphragm walls use rigid formwork to set up the formwork. The construction disadvantages of these methods are that they require a lot of manpower and material resources , and the labor intensity is high, and the construction speed is slow; the rigid formwork is not easy to change with the change of the slope surface of the roof and floor, resulting in poor airtightness, easy grout leakage during the concrete pouring process, and the poured concrete is not dense, and it is difficult to be tightly combined with the coal seam roof . Contents of the invention [0003] The purpose of th...

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Problems solved by technology

[0002] Traditional mining face gobside entry retention uses wooden piles, dense pillars, gangue bags, material stone walls or concrete diaphragm walls, while the concrete diaphragm walls use rigid formwork to set up the formwork. The construction disadvantages of these methods are that they require a lot of manpower and material resources , and the labor intensity is high, and the construction speed is slow; the rigid formwork is not easy to change with the change of the slope surface of the roof and floor, resulting in poor airtightness, easy grout leakage during the concrete pouring process, and the poured concrete is not dense, and it is difficult to be tightly combined with the coal seam roof

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