Research on Location Selection of Industrial Site in Sijitun Mine

In view of the complex terrain and geological conditions of Sijitun Mine, key influencing factors such as the well field topography and geomorphology, coal seam occurrence characteristics, hydrogeological conditions, ground transportation system and others are systematically analyzed by the research. Combined with the location selection principles of industrial site, two sets of schemes of the well field western forest land (west side of F3 fault, near ZK12-5 borehole) and the northern public welfare forest land (near 5-7 borehole) are proposed. A comprehensive comparison and selection is conducted from three aspects: "geological risk-economic cost-ecological disturbance". The research indicates that Scheme I adopts the vertical well development method, which reduces the initial investment by 476 million yuan and shortens the well construction period by 10 months compared to Scheme II; The maturity grade of the full depth freezing process for the wellbore is high, effectively avoiding the impact of the strong aquifer in the eastern part of the well field on construction; The difficulty of land acquisition in the western forest land area is low, the coal compression volume is small, and it is far away from the main river channel of Heilongjiang, the disturbance risk in ecologically sensitive areas is reduced. The research results provide a decision-making paradigm that combines safety, economy, and sustainability for the mine development in cold regions, and have significant reference value for the planning of mines with similar complex geological conditions.