U-shaped steel support can be said to be the most important support profile in coal mine, is the key to roadway support. The U section steel bracket laid in advance, the coal seam may have aging, loos

Steel mine support refers to the artificial structure installed in the mine roadway to support the rock. Its function is to control the movement of surrounding rock and prevent it from falling, so as

The main features of the steel arch support are: high pressure, long supporting time, easy installation and easy deformation. It is mainly used for the support of mine tunnel, which has the ability of

U-shape steel support (full name: the mine roadway support in hot rolled U steel) u-shape is a cross section like the English letter "U" steel, sometimes angled bystreet Japanese letters "ひ" shape.

The steel mine support is mainly used for the secondary support of mine roadway, mine roadway, and the support of the tunnel through the mountain.

The best stress is U-shape steel support after filling dense uniform compression, as used in the surrounding rock on the u-shape set pressure value reaches a certain value, the bracket can produce com