【摘要】 基于目标函数法,以控制点水位为首要约束条件,以总排水量最少为目标函数,对某煤矿6311工作面上部第四系底部含水层疏放水井群降水进行优化设计。以该矿区的突水溃砂安全水头作为控制点水位,对优化设计方案进行计算。采用优化设计,在达到同样水位要求的前提下,可以使总排水量比采用承压转无压完整井公式计算结果减少20%。优化设计计算结果给出单井出水量,对井点位置的安排与单井出水设备的选择具有指导意义。更多还原

【Abstract】 This paper presents an optimization of multi-well dewatering for the Quaternary bottom aquifer above the panel 6311 in a coal mine based on optimal objective function.The minimum drainage is selected as the target func-tion and groundwater levels at the controlling points as the primary constraint conditions.The calculated safety water head for preventing quicksand is selected as the water level of controlling points,and the optimal objective function is then used to optimize the design.The result indicates that the optimized drainage is reduced by 20% compared with the result calculated with the model of a fully penetrating well in a confined-unconfined aquifer,meeting the same requirement for groundwater levels.The result reveals the pump-output of every dewatering well,that will be helpful for choosing the position and equipment of the dewatering wells.更多还原