Abstract：Abstract：It is an important significance in the technique development of fully-mechanized caving face(FCF) to develop the large-section gob-side entry retaining in FCF，but the stability control of surrounding rock of large-section gob-side entry retaining in FCF becomes a technically difficult problem；and its support ways will endure the test of large deformation，which probably has an influence on the stress state of bolt in traditional bolt supporting. The software ANSYS is applied to simulate the shearing deformation characters of bolt through roof in gob-side entry retaining and the rule that shear stress of the bolt changes with turning angle of main roof and obliquity of the bolt distribution is noted. The result indicates that the roof support bolt has obvious shearing deformation in the course of huge deformation or even shearing fracture if the traditional designed large-section gob-side entry retaining in FCF is adopted. If the design scheme of bolt supporting is adjusted properly，i. e.，the inclination of roof support bolt is adjusted properly，the shearing force that the bolt is supported will reduce obviously，whose effect has been verified by the physical simulation and the underground industrial test.
