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调和分析方法求得水位较重力固体潮的时间滞后△t,兖州、豫49、北京塔院及鲁14井分别为18.2、8.4、9.2和22分钟左右,这对研究地下水和地壳应力应变的关系及消除固体潮对水位的影响将起重要作用。用逐步回归方法分析了兖州、塔院井近一个月的时值水位,较好地消除了诸因素对水位的影响,求出的残差△(t)曲线呈随机波动。剩佘标准差S分别为6.80和6.56毫米,在无区域应力引起水位变化的情况下,落在2S范围之外的点仅占2.6-3.4％。对逐步回归方法在深井水位数据处理中的应用,各自变量及它们之间的相互关系,进行了详细讨论,作了较严格的精度和稳定性检验。
Harmonic analysis method was used to determine the time lag Δt of the gravity tide at the water level. The intervals of Yanzhou, Yulong 49, Beijing Tailun and Lu 14 wells were 18.2, 8.4, 9.2 and 22 minutes, respectively. This is of great significance in studying the relationship between groundwater stress and crustal stress-strain And eliminate the impact of solid tides on the water level will play an important role. The stepwise regression method was used to analyze the time-value water level of Yanzhou and Tailing wells in a month, which could well eliminate the influence of various factors on the water level. The residual △ (t) curve obtained was stochastically fluctuating. The residual standard deviation S were 6.80 and 6.56 mm, respectively. In the absence of regional stress caused by changes in the water level, falls outside the 2S range of only 2.6-3.4% points. The application of stepwise regression in deep well water level data processing, their respective variables and their interrelations are discussed in detail, and a more rigorous test of accuracy and stability is made.