中文摘要：

河流沉积区域地层岩性复杂,含水层呈现多岩性层状分布的特点,垂向上不同深度的渗透特性差异较大。通过在河流沉积区域场地开展的多组现场傍河微水试验,探讨了在复杂地层中进行微水试验的现场试验技术,并将计算得到的渗透系数与该区域抽水试验结果相对比,分析了微水试验技术在傍河复杂地层中的适用性。试验结果表明,微水试验在复杂地层渗透系数测试中具有较高的可信度,与常规抽水试验相比,抽水试验得到的渗透系数是微水试验测试结果的1.57~7.20倍左右,平均为3.14倍,远小于室内试验的偏差。开展微水试验时,对钻探、成井和洗井的质量要求较高。对于地层变化复杂的场地,测试含水层的平均渗透系数时,必须设置足够数量的试验井,以规避地层岩性变化引起的误差效应。

英文摘要：

Formation lithology of river sedimentary area is complex, and the aquifer presents the characteristics of lithologic layer distribution, which will lead to the result of different permeability characteristics at different depth. The field slug test in the study of permeability characteristics of complex formation is discussed based on times of tests in river sedimentary area. The applicability of slug test is compared between the calculated results of slug test with pumping test. The results show that the slug test is reliable in computation permeability of the complex formation. Compared with the pumping test,the permeability cofficient calculated with pumping test is at around 1. 57 ~ 7. 20 times of slug test,and the average value is about 3. 14 times,which is far less than the deviation of laboratory test. The requirements on drilling,well shaft construction and debris flushing are relatively high,and sufficient number of test wells should be constructed to avoid the errors caused by the lithological changes.