## 7 Conclusions  
Summarizing the conducted analyses and testing, the following conclusions can be formulated:  
1. A four-stage design of roadways support is essential if the gateroad has to be maintained behind the longwall face. This involves (1) evaluating rock mass quality, (2) assessing the effectiveness of design and roadway maintenance, (3) verifying designed support after its divrage by endoscopic research (ERMF index), and (4) carrying out rock-mass and support monitoring. Only monitoring can give feedback for the designed support scheme. 2. Using pre-tensioned and Gifford-clamped fully grouted cable bolts enables the maintenance of roadway dimensions, even in very challenging roof conditions, as encountered in PW-1. The bolts compressing the roof rocks create a load-bearing roof rock beam, resulting in less roof sagging and ensuring higher roadway height, compared to areas without this bolting. Additionally, grouting both binds and strengthens fractured rock around the bolts. 3. Implementing a steel yielding arch support with an innovative yoke solution improves the problem of arch sliding. Better arch adjacency and better guidance during their shear movements will improve the yield reaction. The sliding is more symmetrical, and the frame maintains an arched profile, even under abutment pressures. Using this solution prevents significant flattening of roof arches and disruption or blocking at the contact points between roof and sidewall arches. 4. Evaluating the stability of roadways in the light of the applied support schemes indicates that the key to maintaining roadway dimensions at great depth is using short steel rock bolts and long cable strand bolts. This reinforcement creates a bolted load-bearing beam in the roof, transferring stresses to the sidewalls and then to the floor. The deeper the redistribution of the stress in the rock mass, the less deformation of the roadway contour is to be expected. If the stress is redistributed just on both sidewalls to a shallow depth, the deformations can be considerable (including floor heaving). The use of Bullflex bags on the roof arches can even cause plastic steel frame deformations, if its yield strength is too low when carrying a remarkable load. 5. Using strand bolts, which are only installed at their end with the help of two resin cartridges, allows for separation of roof beds. Then the load on steel frames is significant and its yielding can be visible. The yield depends strictly on the load direction, which is usually not vertical. The roadway contour undergoes a less pronounced dimension reduction as a result. 6. The research project demonstrated the effectiveness of using steel arch and rock bolt support. Bolting the roof creates a roof beam, which delays rock bed deflection and decreases the load on a roof arch of standing support. The way the roof layers lean on the support frame causes the rock bolts to reduce their load. The combination of two different types of support can effectively ensure the stability of roadways maintained behind the longwall face for a specified period. 7. The presented research revealed the scientific and practical aspects of phenomena occurring near the advancing longwall face, both in the support and rock mass. Subsequent studies should also include measurements of rock mass stresses in the roadway's roof and floor. These measurements should be taken at various distances from its contour. The results of such analyses can allow for the verification of numerical solutions, thereby optimizing the structural design of support in the gateroads, as the gateroads' support design is one of the most challenging tasks of mine operations. Conceptualization, L.B., P.M. and Z.N. ; Methodology, L.B., P.M. and Z.N. ; Formal analysis, L.B. and P.M.; Investigation, L.B., P.M. and Z.N. ; Resources, L.B. ; Writing--original draft, L.B., P.M., Z.N. and K.M. ; Writing--review & editing, K.M. ; Visualization, L.B. ; Supervision, P.M. and Z.N. ; Project administration, K.M.