Comparison Experimental Test on Feedback Degree of Single and Comprehensive Parameters of Measurement-While-Drilling Technology for Roof Bolter

The measurement-while-drilling (MWD) technology of roof bolter plays an important role in revealing roof rock lithology and roof structures, while the selection of MWD monitoring parameters is crucial for its effective application. Therefore, this study conducted experimental tests on the feedback degree of MWD parameters of roof bolter, thus mainly evaluating some single parameters and a comprehensive parameter of specific energy. Specific energy parameter was recognized as a better feedback parameter, while the results of this study showed that it did not reflect an absolute excellent feedback effect when the thrust energy contribution was small. Surprisingly, the torque single parameter reflected a good effect, which was also better than the single parameters of thrust and propulsion speed monitored. The research results provide a reference for the optimization of specific energy parameter in this case and provide a data basis for the optimization of technical parameters of roof bolter MWD technology.