In order to mine the insulating pillar of Dongguashan copper mine safely and effectively, with the full use of existing mine roadways, new ore-drawing roadways are needed to be excavated under the filling of the panel stope. Based on the theory of the surrounding rock released zone, the roadway surrounding the rock released zone is measured by the single-hole acoustic detector, to provide the basis of the determination of the roadway roof safety thickness and the support pattern. By means of field tests, the surrounding rock released zone thickness of -760m and -790m levels is 0.8~1.3m. Combining the Saint-Venant principle and the field experience, the roof safety thickness of the new extracted ore-drawing roadway under filling is determined to be 4m. In addition, the shotcrete-bolt support pattern is adopted; as regards to the partial broken area, the spray anchor net united support pattern is adopted. As a result, when the length of the bolt for the new extracted ore-drawing roadway is determined to be 2.2m, and the grid is 1.0m×1.0m, the roadway surrounding the rock released zone can safely and economically be controlled.