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用瞬时抽(注)水试验求解水文地质参数涉及2个未知数的超越方程,采用常规的解析法无法直接获解。现有的标准曲线比对法由于受曲线密度及人为手动拟合影响,计算过程不但受图表束缚而且求解结果存在误差,不便实际工程应用。该文采用优化拟合方法,在工程适用参数范围内,用较为简单的函数实现了对瞬时抽(注)水试验井流降深比值函数的替代,经整理获得了可通过简单试算完成参数求解的简化计算公式,计算过程简捷,便于实际工程应用。
Solving hydrogeological parameters by instantaneous pumping (water injection) experiment involves two transcendental equations of unknowns, which can not be directly solved by the conventional analytical method. Due to the influence of curve density and manual fitting, the existing standard curve matching method is not only constrained by charts but also has errors in solving results, which is inconvenient for practical engineering applications. In this paper, an optimized fitting method is used to replace the well depth-to-depth ratio function of instantaneous pumping (water injection) test with a simple function within the range of applicable engineering parameters. After finishing, the parameters can be obtained through simple trial calculation Solving the simplified calculation formula, the calculation process is simple and convenient for practical engineering applications.