Abstract：Rapid deformation and large deformation of tunnel surrounding rock in deep mining is a major problem which restricts the exploitation of coal mine. According to the deformation characteristics of surrounding rock in the tunnel during mining of No. 2121 work face in Xingdong Mine, the support parameters of bolt ( cable) are calculated by using the Platts theory. Five kinds of support schemes are put forward. By using FLAC3 Dnumerical simulation software, the top plate sinking of the various options and the amount of the two approaches. The results show that: (1) under the high stress, the total deformation of tunnel surrounding rock is large, especially in the initial deformation period, the deformation rate of tunnel surrounding rock is fast, under this condition, the combined support can effectively control the deformation and destruction of the surrounding rock; (2) through strengthening the support of the two strata, it can improve the bearing capacity of the whole surrounding rock of the deep tunnel, and reduce the roof sinking and promote the roof to form a stable structure; (3) increasing the pre-load of the anchor cable, so that the anchor and anchor cable simultaneously load can be greatly increased the stability of the support structure, and can effectively control led the deformation of the surrounding rock. The field test results show that the combined support of anchor cable can effectively improve the bearing capacity of tunnel surrounding rock, effectively reduce the movement and deformation of surrounding rock, and have a good supporting effect.

Keyword：deep high stress;mining tunnel;tunnel support;combined support of anchor cable;