The single hydraulic prop is externally supplied constant resistance single hydraulic prop, which can be used with various top beams and also as the main column. It can be used for supporting roof of blasting mining face and other temporary supports.
The single hydraulic prop is applicable to the inclined coal seam mining face with the dip angle of the coal seam less than 25 ° - 35 °. The suitable conditions of the roof and floor of the coal seam are: the backwardness of the roof does not affect the recovery of the prop, the floor should not be too soft, and the depth of the single hydraulic prop pressed into the floor does not deteriorate the integrity of the floor, otherwise the base should be increased. When it is used in the blasting face with soft coal quality, protective measures shall be taken for the surface of the live pillar coating to prevent collapse.
When a single hydraulic prop is used with a wooden top beam or as a point post, the top cover should be replaced with a column cap to avoid damaging the wooden beam.
Single hydraulic prop has simple overall structure and long service life; It is easy to operate and maintain, and can greatly reduce the rate of pillar lifting and maintenance.
