Choice of powered roof support FAZOS-15/31-POz for Vang Danh hard coal mine

The article presents the choice of a Polish powered roof support from FAMUR Group forthe conditions of one of the hard coal mines in Vietnam. In the analytical calculations, the strengthand structural parameters of the rock mass from the Vang Danh mine region were adopted. Thelongwall face is 93 m long and the thickness of the coal layer is equal 3 m. For the needs of thechoice of support, the load of the longwall face determined and the capacity of the powered roofsupport were determined. On the basis of the permissible roof deflection method, the condition ofexcavation maintenance was characterized. In the calculations, it was assumed that the condition ofusing a powered roof support type FAZOS-15/31-POz, except in addition to complying of theworking range and permissible value of longwall face inclination, is to ensure proper roofmaintenance conditions, which are determined by the index of load capacity of the roof „g”.