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本文运用弹性力学中关于均布荷载下半无限大弹性空间的应力解,对气压效应、降雨效应等进行机理分析,改进了前人提出的气压系数、降雨系数的理论计算公式。通过计算从理论上说明气压系数、降雨系数不仅与含水层本身性质有关,还与气压变化范围、降雨面积大小、承压井含水层埋深有关,并证明了两系数之和为1。本文还以苏07井为例,分析计算了地表水体涨落对井水位的干扰,结果与他人用二元回归方法所得的结果基本相符。
In this paper, the mechanics analysis of the pressure effect, rainfall effect and so on are carried out by using the stress solution of the semi-infinite elastic space under uniform load in elastic mechanics. The theoretical formulas of the pressure coefficient and the rainfall coefficient proposed by the predecessors are improved. The calculation of the pressure coefficient theoretically shows that the rainfall coefficient is not only related to the nature of the aquifer itself but also related to the range of the pressure variation, the area of the rainfall, and the depth of the aquifer in the pressurized well. It is also proved that the sum of the two coefficients is one. Taking Su-07 well as an example, this paper analyzed and calculated the interference of surface water body fluctuations to the well water level. The results are in good agreement with those obtained by the binary regression method.