Jacob 直线图解法在嵊泗2井抽水试验中的应用

摘要

Calculation and determination of the parameters of the aquifer is an important basis for calculation and evaluation, exploitation and protection, scientific management of groundwater resources. In this paper, we Choose the confined complete well unsteady flow of Theis formula as the pumping test for reference formula based on the full analysis of different aquifer conditions parameters calculation formula, and Using the Jacob linear graphic method to determine parameters in the process of calculating parameters, Solved the calculation error problem which traditional confined complete well unsteady flow of Depuit formula under the condition of no observation well or the distance between observation hole and main hole very close , and the theory had high application value.%　　含水层参数的计算与确定是地下水资源计算与评价、开发利用与保护及科学管理的重要依据。本文在充分分析不同含水层条件求参公式的基础上，选择承压完整井非稳定流时的 Theis[1]公式作为本次抽水试验求参公式，并在求参过程中，采用了 jacob[2]直线图解法确定所求参数，解决了传统的承压完整井非稳定流 Depuit 公式在没有观测井或观测孔与主孔距离很近的情况下计算误差较大的问题，具有较高的理论实际应用价值。