## 7 Conclusions  
This study systematically analyzes the deformation of large-section open cuts in faces with large mining heights using similar material model experiments. We also characterize the movement patterns of overburden rock layers. In addition, the force acting on the combined support of rock rods, cables, and single support pillars is examined. The findings are summarized as follows:  
1. In large cross-section openings, deformation and failure initially occur at the side corner of cuts.
2. The surrounding rock failure occurs on both sides, and the optimized support scheme effectively controls the convergence of the surrounding rock.
3. The optimized support parameters effectively control the loosening and damage range of both sides of the opening cut.
4. Shortening the cable length prevents large-scale loosening of the roof rock layer, making the optimized cable parameters feasible.
5. Simulation experiments indicate that the top rock bolt support scheme is feasible.
6. Integrated analysis of theoretical calculations and field monitoring data yields optimized support parameters: cable bolt length of 6.0 m and roof bolt length of 3.0 m.  
Although this study has achieved certain results in optimizing the support parameters of large-section open cuts in high mining faces, there are still some key issues that need further research, which is also an important direction for future research. For example, future research should focus on how to dynamically adjust the support parameters according to the geological conditions and support effects during the mining process, so as to improve the adaptability and flexibility of the support system. At the same time, with the development of artificial intelligence and Internet of Things technology, it is crucial to develop an intelligent support system to achieve real-time monitoring and automatic adjustment of support parameters, which is essential for improving support efficiency and safety.  
Y.Q.: Methodology, Investigation, Writing--Original Draft. M.X.: Conceptualization, Formal Analysis, Writing--Review and Editing. Y.H.: Investigation, Software. C.L.: Conceptualization, Supervision. Y.C.: Investigation, Formal Analysis. H.C.: Visualization, Investigation, Funding acquisition. Q.Y.: Conceptualization, Supervision, Writing--Review and Editing. M.Z.: Conceptualization, Resources, Supervision, Writing--Review and Editing. All authors have read and agreed to the published version of the manuscript.  
This work was funded by the Key Science and Technology Project of the China National Coal Group Corporation, grant number 20221 CY001, and was funded in part by the National Natural Science Foundation of China, grant number 51804052; the Key Projects for Innovation and Application Development of Chongqing, grant number CSTB2022 TIAD-KPCX0105, CSTB2024 NSCQ-MSX0173; the Open Science Foundation Project Funded by State Key Laboratory of Coal Mine Disaster Dynamics and Control, grant number 2011 DA105287-MS202210 and the Scientific Research Fund Project of Chongqing Education Commission, grant number KJZD-K202303406.  
Not applicable.  
The data that support the findings of this study are available from the corresponding author upon reasonable request.  
The authors declare no conflicts of interest.