Research on the Method of Calculating the Layered Permeability Coefficients by Using Single-hole Stable Flow Mixed Pumping Test
In order to solve the problem of difficult hydrogeological hole construction and layered pumping test in mining areas with multiple water-filled aquifers,two representative exploration and mining areas were se-lected as experimental sites,and based on the seepage theory of Qiubuyi stable flow,a method of calculating the layered permeability coefficient by using borehole single-hole mixed pumping test was establishedConceptual Models and Mathematical Models.Based on the construction,pumping test,data collection and comprehensive a-nalysis of the hydrogeological borehole in the experimental field,the method of obtaining the permeability coeffi-cient of aquifer stratification from the single-hole mixed pumping test was studied.The experimental results show that the relative errors of the permeability coefficients of the aquifer calculated by the mixed pumping test of the hydrogeological holes of the two experimental sites and the results calculated by the actual pumping test of the single layer are only 3.73％and 4.4％,respectively,which reflects the feasibility of the method proposed in this study and can provide a reference for the exploration of mining areas with hydrogeological structures of the same type of deposits.
Single holeMixed pumping testPermeability coefficientStudy
万方数据
维普
