## 4 Comparative Analysis of Test Results  
### Comparative Analysis of the Central Yunnan Water Diversion Project  
1.1 Comparative Analysis of the Sectional Variable Water Head Water Injection Test and Slug Test of Borehole CYWD-1  
A sectional comparison test was carried out in the borehole CYWD-1. The sectional variable water head water injection test and three different slug test theories were used for analysis and calculation. The statistics of the calculation results are shown in Table 1, and a comprehensive comparison of the calculation results is shown in Figure 11. \begin{table}
\begin{tabular}{l c c c c c c c} \hline \hline \multirow{2}{*}{**Test No.**} & **Test Section** & **Test Section** & **Permeability Coefficient of** & \multicolumn{2}{c}{**Permeability Coefficient of Slug Test (cm/s)**} & \multicolumn{2}{c}{**The Mean of Permeability**} \\  & **Position (m)** & **Length (m)** & **Water Injection Test (cm/s)** & **Kipp Model** & **CBP Model** & **HWS Model** & **Coefficient (cm/s)** \\ \hline CYWD-1-1 & 130–135 & 5 & \(1.10\times 10^{-4}\) & \(1.98\times 10^{-4}\) & \(1.25\times 10^{-4}\) & \(1.56\times 10^{-4}\) & \(1.47\times 10^{-4}\) \\ CYWD-1-2 & 135–143 & 8 & \(3.95\times 10^{-4}\) & \(4.95\times 10^{-4}\) & \(3.13\times 10^{-4}\) & \(3.52\times 10^{-4}\) & \(3.88\times 10^{-4}\) \\ CYWD-1-3 & 143–161 & 18 & \(2.60\times 10^{-3}\) & \(2.93\times 10^{-3}\) & \(1.39\times 10^{-3}\) & \(1.63\times 10^{-3}\) & \(2.14\times 10^{-3}\) \\ CYWD-1-4 & 161–173 & 12 & \(4.18\times 10^{-4}\) & \(1.32\times 10^{-3}\) & \(5.79\times 10^{-4}\) & \(5.70\times 10^{-4}\) & \(7.21\times 10^{-4}\) \\ CYWD-1-5 & 173–182 & 9 & \(1.79\times 10^{-3}\) & \(2.75\times 10^{-3}\) & \(2.31\times 10^{-3}\) & \(2.31\times 10^{-3}\) & \(2.29\times 10^{-3}\) \\ CYWD-1-6 & 182–196 & 14 & \(4.50\times 10^{-4}\) & \(7.07\times 10^{-4}\) & \(3.13\times 10^{-4}\) & \(3.72\times 10^{-4}\) & \(4.60\times 10^{-4}\) \\ CYWD-1-7 & 196–220 & 24 & \(4.55\times 10^{-4}\) & \(5.30\times 10^{-4}\) & \(3.72\times 10^{-4}\) & \(4.07\times 10^{-4}\) & \(4.41\times 10^{-4}\) \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Statistics of the calculation results of the sectional variable water head water injection test and slug test in borehole CYWD-1. It is shown in Table 1 and Figure 11 that the calculated results using the Kipp model are generally large, those using the CBP model are generally small and the calculated results using the water injection test method fluctuate relatively largely. Through a comprehensive comparison, the results calculated using the HWS model are most consistent with the average value, and the results obtained are more representative. This indicates that the slug test is more stable and reliable compared to the water injection test. In general, the water injection test results of each test section are basically consistent with the corresponding slug test results, and the ratio of the maximum and minimum permeability coefficients calculated by different methods is within 2.5 times. Therefore, the calculated results of the sectional water injection test and slug test carried out in the field are reliable, and it also shows that the HWS model derived by considering the finite thickness well-skin effect is also very practical and can be popularized when the well-skin factor is 1. 4.1.2 Comparative Analysis of the Whole Hole Slug Test of the Central Yunnan Water Diversion Project  
The whole hole slug test is carried out in the boreholes CYWD-2, CYWD-3, CYWD-4 and CYWD-5. Three different slug test models are used for analysis and calculation. The statistics of the calculation results are shown in Table 2, and a comprehensive comparison of the calculation results is shown in Figure 12.