Abstract: For the complex geological conditions in the north part of Chensilou coal mine, which forms the natural graben by F18 fault and F13 fault, the paper puts two schemes which technically feasible and economically rational according to distribution principle of the mining area. After a detailed analysis and comparison, the paper determines the optimal scheme by using the existing system arrangement of production system in the mine of the north east wing, the scheme of engineering quantity is little, short construction period. And the initial investment is little, valuable. In addition, the scheme is conducive to mining succeed, mining series ventilation preparation time which is short, small range of normal mine production, less effect. The scheme is to be provided reference for design of mining scheme under the similar geological condition.

Key words: graben block, mining district design, optimized design