半煤岩巷道掘锚一体机智能化快速掘进技术的应用研究OA

In view of the problems of large fluctuations in load and vibration and high dust concentration caused by sudden changes in coal rock hardness and high rock cutting proportion of the 63upper02 transportation crossheading semi coal rock roadway in Dongtan Coal Mine,a rapid excavation technology system combining complete set of equipment of excavation and anchoring integration and intelligent control coordination is constructed.Taking coal rock identification as a criterion,fuzzy adaptive traction speed regulation and planning cutting are drived to achieve load limited stable cutting and cross-section stable forming;On the shipping side,on-demand speed regulation is implemented based on working condition boundaries and loading pressure feedback to reduce high-speed wear under light loads;The state evaluation and early warning mechanism integrating multi-source health indicators is established,and the dust reduction closed-loop control is achieved by adopting online monitoring-threshold alarm-spray linkage.The on-site industrial tests show that the monthly average footage is improved from 365 m to 690 m,with an improvement amplitude of 89%;Single shift employment is reduced from 15 to 8 people;The total head-on dust concentration is decreased by 40%-50%and the respiratory dust concentration is decreased by 35%-45%,which can provide a technical support for rapid,fewer personnel,and safe excavation of semi coal rock roadways.