关键词: 井群互阻(井群干扰), 流量削减法, 出水量减少系数, 矩阵解析式

Abstract: The wells interference (also known as the wells disturbance）calculation is commonly used in the wells planning at water source area. The decreasing coefficient of well discharge calculated by the discharge reduction method for the wells interference calculation of the full confined wells is analyzed, and some irrational points in the coefficient calculation in the previous literatures are pointed out. The relation of additional drop depth under interference pumping and the one under independence pumping is established. A practical equation group is derived, which manifests the relationship between the decreasing coefficient of well discharge and the drop depth under interference pumping. By the equation group, when the drop depths of different wells under interference pumping are known, we can calculate the decreasing coefficient of well discharge, and deduct the wells discharge under interference or vice versa. The correctness of the presented discharge reduction method is verified by practical cases.

Key words: wells interference (wells disturbance), well discharge reduction method, decreasing coefficient of well discharge, matrix expression