The single hydraulic prop is a new environmental protection support equipment. It has the advantages of small size, high support height, reliable support, convenient use and maintenance, and low comprehensive cost. It can be used with metal hinged roof beams to support high-end general mining and artillery face support roofs and fully-mechanized mining face support ends. Can also be used alone as a pillar or other temporary support.
It can be applied to inclined coal seam mining working face with coal seam inclination angle less than 25 ° -35 °. The coal seam roof and floor conditions that the single hydraulic props is suitable for are: backward roof does not affect the recovery of the pillar, the floor should not be too soft, and the depth of the pillar into the floor does not deteriorate the integrity of the floor, otherwise the base should be enlarged.
When the coal is used in a softer blasting working face, protective measures are taken on the surface of the coating of the live cylinder to prevent collapse. When the pillar is matched with the wooden top beam or used as a point column, the top cover should be replaced with a column cap to avoid damage to the wooden beam.
Precautions for single hydraulic prop back column
1. Before the single hydraulic props return to the column, check the surrounding roof and the support is intact. If there are broken beams, missing columns and other unsafe factors, you must deal with them before returning to the column.
2. The single column of the hydraulic prop requires two people to cooperate, one person returns to the column, and one person observes the roof. When returning to the column, you must work in a safe place with a good support. You must clear the exit path, lay down the support pillars, and inform other employees who work around.
3. When the top plate comes to press and encounters other dangerous situations, stop returning to the column, and then retreat after processing. When promised to return to the column in sections, the working distance of the sections should not be less than specified.
4. When the large-area suspended roof and roof pressure is too high, it is not allowed to manually return to the column, use a winch to return to the column at a long distance, or withdraw in other safe ways.
