Sequential line of action is the status quo in conventional roadway development using roof bolting. The main operating procedures roof bolting, drilling, blasting and loading are carried out successively. Thus, the approach of the F&E-Project is the development of new concepts to parallelize these operating procedures not to only decrease development time and hence resulting working costs, but also to achieve higher performance in development. The primary focus of the project is not set on technical improvements but on short term organizational improvements of the operating sequences.
Based on state of the art bolting-systems in roadway development, a road heading model is developed as a basis of comparison for parallelization. The implementation of parallelization is carried out iterative, as optimization of a single operating procedure takes place before the adjustment between succeeding procedures is optimized. These solutions are concluded in a compiled master plan and a graphical visualization in the form of a Gantt-Diagram. The outcome are nine basic concepts, from which 34 alternatives are concluded. The optimization of the operating procedures leads to the following results:
- decreasing of development time of up to 40 %
- fast practicability
- low impact on existing equipment
- maximum rate of development: 14.7 m/d
- decrease of costs: 16 %
- segregation of operating procedures