What support method is used in coal mine roadway?

Wood shed support was used before, and then it gradually developed into cement pouring shed leg shed beam support, I-beam support and shotcrete support, and then developed into anchor net support, anchor net spray support, anchor net cable support, U-shaped steel shed combined with anchor net cable support and concrete reinforced concrete pouring support.

The specific support method must be selected according to the service life of the roadway, the specific geological conditions of strata and coal seams, the section and shape of the roadway, and the requirements of transportation and ventilation.