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一、方法简述 水文地质现象都具有一定的规律性,其重要表现之一就是变化的趋势。在预测岩溶含水层富水性变化规律上,主要是用趋势分析的方法,研究岩溶在钻孔中的高度,抽水试验出的渗透系数和单位涌水量的空间变化规律。常利用多项式函数成付里叶级数所代表的曲面,根据最小二乘法的原理,来拟合该地段岩溶特征的空间分布,用所确定的函数来描述该岩溶特征的趋势变化。将钻孔实测岩溶值 (渗透系数、
First, a brief description of the hydrogeology phenomenon has a certain regularity, one of its important manifestation is the trend of change. In predicting the variation law of water-richness of karst aquifer, the trend of karstification in drilling is mainly analyzed by means of trend analysis, and the spatial variation of permeability coefficient and unit inflow water volume under pumping test is studied. The polynomial function is often used to represent the surface represented by the Fourier series. According to the principle of least square method, the spatial distribution of karst features in the lot is fitted and the trend of karst characteristics is described by the determined function. The measured drilling karst value (permeability coefficient,