CHINA MINE ENGINEERING

Laiwu Mining Group made a lot of explorations in applying backfilling technologies in the downward drifting process, and accumulated rich experience therein. The essay first introduces the downward drifting with paste backfilling process, then analyzes paste backfilling design and optimization schemes, focusing on the resolution of practical difficulties, including: netting suspension, filtrate containment and sealing, and backfilling stratification and top filling and connection.