Tóm tắt:

After analyzing the geological conditions, as well as analyzing the current state of the mining technologies and method of controlling the initial roof at some faces of Company 86 of the North East Corporation, the paper has evaluated and synthesized all the method of controlling the initial roof at some faces of Company 86. At the same time, the paper mentions the shortcomings of the method of controlling the initial roof are being applied at some faces of Company 86. The paper proposes appropriate technical solutions to control the initial roof in order to improve the safty level in exploiting the faces. This technical solutions after application in practice has achieved good results, reducing the cycle time in the face in Company 86. They are effective in controlling the initial mine pressure for each area with specific geological conditions.