论文部分内容阅读
具越流补给的承庄含水层参数计算的常用方法,是双对数量板法与半对数拐点法。拐点法主要利用观测孔S=f(lgt)曲线拐点的一系列特性来计算含水层参数,它要求降深达到稳定。若未达最终稳定,需由S=f(lgt)曲线外推最大降深,其值就有一定的随意性,拐点位置亦难正确标定。当含水层越流系数较小时,为求得观测孔的稳定降深,往往耗时很长,
A commonly used method of calculating the parameters of Chengzhuang aquifer with over-current recharge is the double-pair plate method and semi-logarithmic inflection point method. The inflection point method mainly uses a series of characteristics of the inflection point of the S = f (lgt) curve in the observation hole to calculate the parameters of the aquifer, and it is required to achieve the lowering of the stability. If the final stability is not reached, the curve of S = f (lgt) should be used to extrapolate the maximum depth, and the value of the curve has a certain degree of randomness. The position of inflection point is also difficult to calibrate correctly. When the overcurrent coefficient of aquifer is small, it often takes a long time to obtain the stable decline of observation hole,