A special form of three-dimensional steel bracket was made by drawing the advantage of large span space grid structure,and its applicability in the supporting of high stressed soft rock roadway was researched.In combination with PanSan typical mine roadway engineering,the laboratory test under the effect of high pressure was carried out,and the stress and deformation laws of three-dimensional steel bracket was researched.Based on the support structure features and laboratory test results,the fully closed three-dimensional steel bracket bolting shotcrete structure on the roadway was designed.Finally,industrial test proved that the structure of three-dimensional steel bracket bolting shotcrete structure was reasonable.It could play the material properties and not only had a high bearing capacity but also had the yielding,which could be satisfied the support request of high stressed soft rock roadway.
