Abstract：Based on the ultra-high mining roadway appeared in a Shanxi mine, the response characteristic in a change process of height from 3.5 m to 7.5 m is simulated in surrounding rock.Results are as follows: shear and tensile plastic zone depth in sides is proportional to the roadway height; the higher roadway, the roadside relative convergence is bigger and the relative convergence of floor-roof is less side; the vertical stress peak moves deeper.Bolt support technology with high-strength, high-bond force, high-pre-tightening force, and high-reliability could better enhance the carrying capacity of an anchoring structure, and diagonal cable&beam are anchoraged in a shoulder stable area, which is stable and reliable.After the roadway is dug out, the maximum relative convergence speed of side-side and roof-floor are 7 mm/d and 3 mm/d, below 1.5 mm/d when it achieves self-stability after 15 days.The total relative convergence of side-side is 125 mm and rooffloor relative convergence is 88 mm during the observation of 120 days.

Keyword：ultra-high;roadway;stability;support;