Abstract: In order to address the problems of resources imminent depletion and coal resources under pressure within the range of mining area in Pengzhuang Coal Mine, Pengzhuang Coal Mine has recently introduced downhole filling mining technology. Aiming at the existing various problems of auxiliary links in the filling system within the industry, such as long flushing time after the end of filling, relatively large error in weighing system, low automation level of some subsystems, unsatisfactory dust governance effect of the crushing system, waste of electricity and human resources, etc, Pengzhuang Coal Mine adopts multiple new technologies and system linkage mechanisms, including siphon effect conversion and adaptive learning weighing algorithm based on historical data, efficient filling, cost reduction and efficiency improvement, energy conservation and environmental protection are successfully achieved, and production safety is effectively ensured, obtaining significant benefits in society, economy and environmental protection. According to the production data from July 2024 to June 2025, the flushing time is shortened by 84% and the weighing error is reduced to 2%.