Abstract
This paper describes a new method of roadway support in deep mine. More than 70% of China's coal reserves exist -800m depth below. Along with the increased growing coal mining depth, mines in most mining areas are facing deep mining problems. Currently, the main support means in deep high pressure roadway are high prestressed anchored cable support and strengthen U-steel support, even many mining areas using support combined by high prestressed anchored cable and strengthen U-steel support, but that still cannot effectively control the deformation of surrounding rock in roadway. Concrete-filled steel tube support is a new type of support mode developed in recent years. In order to ensure concrete-filled steel tube support for complex pressure conditions in mine. According to the simulation results of the ANSYS software for the further optimization and improvement based on the traditional concrete-filled steel tube support. D-type concrete-filled steel tube (D-CFST) support technology is proposed. And in contrast to previous circular concrete-filled steel tube support technology in common, it can draw the conclusion that D-CFST support has prominent advantages in deep mine. This method of roadway surrounding rock control in coal mine is of great
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