## 6 Conclusions  
The macroscopic deformation and the measurement data analysis of each test section in this experiment clearly indicated the superiority of RDEA bolts compared to traditional steel bolts. Not only did it reflect better anti-blast reinforcement effects on the cavern structure, but it also exhibited energy-absorbing characteristics and partial displacement recovery properties. RDEA bolts not only achieve a weakening effect on the explosive load but also provide good anti-blast deformation recovery capability after reinforcement, demonstrating excellent potential applications.  
Under the same loading conditions, the total residual displacement of the arch crown of the conventional steel-bolt-reinforced test section is 56.2% greater than that of the RDEA-bolt-reinforced test section, which corresponds well with the macroscopic failure phenomenon of the cavern. This indicated that the support effect of the RDEA bolt was superior to that of the conventional steel bolt and has a significant effect.  
When the proportional distance is 0.93 m/kg\({}^{1/3}\), the RDEA-bolt-reinforced test section exhibited a 76.4% smaller explosive pressure at the arch crown than the conventional steel-bolt-reinforced test section. This indicated that the energy-absorbing characteristics of the RDEA bolt are excellent and can effectively attenuate the effect of the explosive load.  
The maximum acceleration of both test sections was located at the arch crown position, with the minimum acceleration at the bottom plate position. However, the conventional steel-bolt-reinforced test section exhibited a relatively larger acceleration at both the arch crown and bottom plate positions, indicating that the full-length bonding bolt is not as effective as the RDEA bolt in reducing the acceleration of the arch crown and the bottom plate in the test section.  
This research received no external funding.  
Not applicable.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Test Section**} & \multirow{2}{*}{**Monitoring Point Number**} & \multicolumn{3}{c}{**Peak Acceleration/m \(\times\) s\({}^{-2}\)**} \\ \cline{3-5}  & & **Condition 1** & **Condition 2** & **Condition 3** \\  & & **(W = 4.8 kg)** & **(W = 7.8 kg)** & **(W = 10 kg)** \\ \hline \multirow{4}{*}{RDEA-bolt-reinforced test section} & \multirow{2}{*}{A11} & 96.083 & 565.001 & 656.725 \\  & & \(-\)25.865 & \(-\)181.376 & \(-\)210.707 \\ \cline{2-5}  & & 44.118 & 58.847 & 71.042 \\ \cline{2-5}  & & \(-\)29.927 & \(-\)75.598 & \(-\)170.291 \\ \cline{2-5}  & & \(-\)13 & 15.499 & 38.854 & 29.910 \\  & & \(-\)16.322 & \(-\)106.414 & \(-\)51.705 \\ \hline \multirow{4}{*}{Conventional steel-bolt-reinforced test section} & \multirow{2}{*}{A21} & 408.856 & 707.123 & 889.821 \\  & & \(-\)268.689 & \(-\)174.996 & \(-\)248.333 \\ \cline{1-1} \cline{2-5}  & & \(-\)102.273 & 50.025 & 98.929 \\ \cline{1-1} \cline{2-5}  & & \(-\)77.011 & \(-\)98.134 & \(-\)193.975 \\ \cline{1-1} \cline{2-5}  & & \(-\)17.693 & 56.147 & 40.189 \\ \cline{1-1} \cline{2-5}  & & \(-\)35.711 & \(-\)85.651 & \(-\)100.538 \\ \hline \hline \end{tabular} Note: Positive value indicates that the acceleration direction is towards the inside of the cave, while negative value indicates that the acceleration direction is towards the outside of the cave.  
\end{table}
Table 4: Peak value statistics table of acceleration-measuring points in different test sections.