Abstract: The mining roadway deforms severely in tunneling process under the close distance gobs. To solve this problem, the article researched mechanical properties and loose range of roadway surrounding rock by taking a coal mine in shaanxi as an example. Researches show that the loose circle of mining roadway surrounding rock occurs variation under close distance gobs and forms IV-V class. Considering that the high density bolts supporting can't be used, the article determines supporting parameters by suspension theory, and adjusts calculating parameters combined with actual situations. Mine pressure test in scene shows that the supporting plan can guarantee safe production effectively.