A NEW TYPE OF SUPPORT ADAPTABLE TO INHOMOGENEOUS ROADWAYS UNDER THE INFLUENCE OF MINING ACTIVITIES

A new type of the yieldable hinged support adaptable to inhomogeneous rock roadways under the influence of mining activities is suggested in this paper.Design principle,structural features,and calculation method for the new support are discussed. Laboratory and industrial experiments were made,and a very good supporting effectiveness of the supports was achieved. The obtained results indicate that the new type of support has such advantages as higher load-carrying capacity,better yieldable performance,higher rate of reuse,and more convenience to set up and retrieve.It can be adjustable to the carried load to fit for the inhomogeneous and varied ground pressure.The new type of support,which has both advantages of hinged supports and yieldable supports,is firstly inhovated at home and abroad.