浅谈水文地质参数的计算与应用

Introduction to the Calculation and Application of Hydrogeological Parameters

结合多个场地的抽水试验和室内试验资料,分析评价了工程勘察中不同水文地质参数的应用范围及在参数求取过程中应注意的问题,根据实测数据得出野外抽水试验渗透系数是室内渗透试验所测得的10~14倍,影响半径约为裘布依影响半径的5.8~17.7倍;分析了产生这种情况的原因,指出在工程实践中应根据不同的要求选取不同方法计算得出的水文地质参数;针对导水系数、释水系数及给水度在计算及应用过程中应注意的问题进行了评述。

Combining with the data of field pumping tests and laboratory tests, this paper discusses the scope of applica- tion of different hydrogeological parameters in engineering investigation. Problems that should be paid attention to in the appli- cation of parameter calculation are also presented. The experimental data show that permeability coefficient with pumping tests is 10 to 14 times of the results of seepage tests. Influence radius is 5.8 to 17.7 times of the Dupuit influence radius. And this study analyzes the reasons for this situation, pointing out that different calculation methods of hydrogeological parameters should be selected according to different requirements in engineering practice. Finally, the problems on parameter calculation （hydraulic conductivity, discharge coefficient and specific yield） process and application process are analyzed. Has some signifi- cance for understanding the various hydrogeological parameters. The results have the benefit for understanding the various hydrogeological parameters.