## 5 Conclusions  
1. According to the analysis of the roof management in the working faces adjacent to the 12,404 fully-mechanized mining face with a super-large mining height, it has been observed that as the mining height increases, the roof management becomes increasingly complex. Additionally, it has been noted that due to poor roof management in the fully-mechanized mining face with a super-large mining height, roof collapses and accidents involving the support crushing and conveyor crushing frequently occur. The intelligent control system of the 12,404 fully-mechanized mining face with a super-large mining height is superior to the traditional operating system. This system is capable of automatically positioning the shearer and enhancing roof support.
2. Based on an analysis of the mining pressure and roof conditions during normal mining, passing lime ditches, and final mining breakthrough in the 12,404 fully-mechanized mining face with a super-large mining height, and in combination with the intelligent construction system of the mine, this paper provides the following suggestions: during normal mining, when the buried depth is greater than 200 m and the roof is fractured, it is necessary to reduce the coal cutting speed and pull the advanced support to pass through the area with intense mining pressure behavior; when the roof is in good condition, coal cutting needs to be accelerated to shake off the pressure. When the buried depth is less than 200 m, local pressure should be overcome, followed by accelerating production to increase output. When passing the lime ditch, coal cutting should be at normal speed. In the final mining stage, it is neccessary to be cautious of roof leakage, reduce gangue, and improve the reliability of roof control in fully-mechanized mining faces with a super-large mining height.
3. This study has analyzed the mine pressure and roof situation in the normal mining stage and the \"cut-through to the last mining work surfaces\" stage at the 12,404 super-high fully-mechanized mining face. In combination with the intelligent construction system of the mine, during the normal mining period, when the buried depth is  
Figure 21: Diagram of coal machine speed change when the buried depth of fully-mechanized mining face is less.  
Figure 22: Diagram of production system adjustment in the final mining breakthrough stage.  
greater than 200 m and the roof is broken, it is necessary to slow down the speed of coal cutting and control the speed of coal machines within 12 m/min, with all staff in a defense state. Forepoling shall be installed over the regions with dramatic mine pressure. When the roof is in good condition, coal cutting shall be sped up, so as to throw off the pressure. When it is less than 200 m, the production can be accelerated after overcoming the local pressure, so as to boost the output. In the \"cut-through to the last mining work surfaces\" stage, the speed of coal machines shall be controlled within 8 m/min, with attention paid to defense against roof falling, while reducing gangues. In this way, the reliability of roof management for super-high fully-mechanized mining faces can be improved.  
Conceptualization, J.L.; Data curation, F.X.; Formal analysis, J.L.; Investigation, J.L.; Methodology, F.X. and L.S.; Project administration, J.L.; Supervision, F.X. and L.S.; Writing--original draft, J.L. and F.X.; Writing--review & editing, J.L. and L.S. All authors have read and agreed to the published version of the manuscript.  
The research was funded by the Natural Science Foundation of Heilongjiang Province (Grant no. ZZD2021E006) and the National Natural Science Foundation of China (No. 52174075).  
Not applicable.  
Data Availability Statement: Data are contained within the article.  
Author [PERSON] was employed by the company China Energy Shendong Coal Grp Co., Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.