## 4 Results
### Significant Soil Support Cases  
In the case of sections 3R and 4R (\(k\) = 356 kN/m\({}^{3}\), significant soil support), the membrane tension force \(T_{h}\) distribution is completely different than in tests with \(k\) = 0 (no soil support). In all analysed cases, the membrane tension force \(T_{h}\) was the lowest for \(\delta\) at approx. 0.5 (uniform distribution of equivalent load), and the values of the force are similar for the extreme values \(\delta=0\) and \(\delta=1\). Figure 13 shows an exemplary diagram of the membrane tension force for Section 3R (measurements taken 9 days after installation). For sections 3R and 4R, settlements were measured at 9, 16, 23, 31, 49, 94 and 138 day after installation of the geosynthetic. This allowed the analysis to be carried out over time. In the case of Section 3R, the highest error values were obtained for measurements after 9 days (Figure 14). For the measurements after 16 days, there was a rapid decrease in the values of the deflection curve mapping errors. For measurements of settlement after 23 days, the error values for all analysed distributions increased significantly, and for subsequent measurements, the obtained error values gradually decreased. The nature of the distribution of the error value for different load distributions is similar, but for subsequent measurements of settlement, the difference between the smallest error value for \(\delta=0\) (which corresponds to the distribution of the equivalent load in the form of an inverted triangle) and the error values for the distributions for \(\delta\in(0.5,1)\) (distributions from equal to triangular) decreases. For all measurements in Section 3R, the lowest mapp  
Figure 12: Comparison of deflection curves under the equivalent load distributed in the form of an inverse triangle, uniform and a triangle in view of the measurement results [9] of the reinforcement deflection curve (black line) for C_L and \(q_{av}/J\) = 0.075. Figure 13: An example graph of tension force as the function of parameter \(\delta\) (3R, 9 days). for the inverse triangular distribution (\(\delta=0\)). Later, the error value grows, and from a uniform to triangular distribution (\(\delta\) from about 0.5 to 1), the error value for measurements from the 16 th day after installation is at a similar level for individual series of measurements. In the case of Section 4R, the highest mapping error values were obtained for the settlement measurements after 9 days (embankment construction phase), cf. Figure 15. For measurements after 16 days, the error values are much lower, and for subsequent measurements they gradually decrease. The nature of the error distribution for the measurements from 9 to 49 days is similar to the nature of the error distribution for plot 3R. However, for the measurements from day 16 to 49, the smallest error was obtained for distributions represented by \(\delta\) between 0.025 and 0.05. For the last two series of measurements, i.e., after 94 and 128 days, the nature of the error distribution depending on parameter \(\delta\) changed significantly. The smallest error value was obtained for load distribution represented by \(\delta=0.25\), and this value is almost four times smaller than the error for the equivalent load distribution with \(\delta=0\) (inverse triangular distribution) and over six times lower than the error for the equivalent load distribution with \(\delta=1\) (triangular distribution). The error value increases for values of \(\delta\) above 0.25 for the 94 th day and 0.275 for the 138 th day. The highest mapping error value was obtained for \(\delta=1\) equivalent to a triangular distribution of the equivalent load. For sections 3R and 4R, settlements of the column were also measured. In the final phase, they were equal to 31 and 28 mm, respectively. Therefore, for Section 4R, the influence of taking into account the settlements of the column on the accuracy of mapping the deflection curve of the geosynthetic was additionally analysed.