关键词: 引黄河泥沙复垦, 管道输沙, 需沙量, 引水量, 优化分析

Abstract: Jining Mining Area belongs to a high phreatic mining area，and traditional reclamation methods have low recovery rate of arable land.The north of Jining mining area is the plain，filling soil material can not be adequately provided when reclamation.For the shortcomings of traditional rehabilitation methods，and taking into account that the mine in northern Jining is adjacent to the Yellow River，and it is very convenient for water diversion and sand transporting，a new method of filling reclamation by Yellow River sediment is proposed.First subsidence area and volume of different periods according to coal production are estimated，and sediment and water diversions demand for reclamation at different times are predicted.Then，the filling reclamation process of Yellow River silt is depending to determine the optimization principles，including optimization principle of pipeline layout，optimization principle of reclamation sequence and principle of improving the efficiency and capacity of sediment transportation.According to the principle of optimization，the appropriate layout forms of the pipe network are chosen to reduce reclamation costs；According to coal mining，the stable area in mining subsidence region is prior to be mined to avoid duplication of reclamation；selecting the appropriate sediment transport equipment and ancillary equipment，selecting the appropriate pipe diameter，pipe，and selecting the optimal water concentration of sediment，can effectively improve the sediment delivery capacity and of pipeline，and silt transport efficiency.All provide the basis for the actual reclamation project of Yellow River silt.

Key words: Yellow river sediment reclamation, Sediment transporting by pipeline, Sediment demand, Water demand, Optimization analysis