论文部分内容阅读
在进行抽水试验时,多将含水层看作为均质各向同性的,而事实上也有可能是各向异性的含水层,从而得到的含水层参数值不真实。该文分别以描述均质各向同性与各向异性情况下的非稳定流问题的解析解为基础,在满足直线图解法适用条件的情况下,分析了3组实际抽水试验数据,计算了两种情况下的含水层参数。经讨论表明:1)如果将各向异性情况下的含水层按各向同性处理,由各个观测孔s-t数据得到的弹性释水系数数值间会有较大的差别,据此提出了判断含水层是否为各向异性的初步方法;2)在利用直线图解法时,应当进行后检验,检查是否满足其适用条件。
In the pumping test, the aquifer is often considered as homogeneous isotropic, but in fact may also be anisotropic aquifers, resulting in aquifer parameter values ?? are not real. Based on the analytic solution of the instability flow problem under the condition of homogeneous isotropy and anisotropy, respectively, three sets of actual pumping test data were analyzed under the conditions of the application of the straight line graph method. Two Aquifer parameters under various conditions. The discussion shows that: 1) If the anisotropic aquifer is treated isotropically, there will be a big difference between the values of the elastic release coefficient obtained from the observation data of each observation hole, Is the initial method of anisotropy; 2) In the use of straight line diagram method, it should be post-test to check whether it meets the applicable conditions.