Preliminary study on the parallel technology of fully mechanized roadway based on digital twin

In the current serial technological process of fully mechanized roadway,the low mechanical intelligence degree of the equipment and the serious imbalance of mining and drivage have become the main technical bottlenecks in the efficient production of coal mine. Firstly,based on the technology concept of the combination of automatic driving mode and self-moving support of the integrated driving and anchoring unit,a new parallel technology system is presented based on the combination of excavation,support and anchor in fully mechanized roadway followed with its process principle and advantages of the parallel construction technology in engineering benefits. Then a parallel construction technical process and technological system of the fully mechanized roadway is constructed under the guidance of the digital twin theory based on the robotized upgrade and reconstruction goal of the parallel process technology equipment of the fully mechanized roadway. It is a preliminary discussion on the intelligent development of parallel process technology and equipment,which aims to build an intelligent parallel operation mode including many functions such as the remote visualization guidance of the tunneling robot,the reliable support of the temporary support robot,and the multi-station anchor of the drilling and anchoring robot in a fully mechanized roadway. In the parallel construction technology system driven by the digital twin technology,multi-source sensing information's linking and mutual translation are used to realize the interactive perception between the physical entities of parallel process technology equipment and the model of virtual digital twin. Meanwhile,the intelligent innovations of roadheader,such as autonomous deviation correction,obstacle sensing and automatic cutting,have been completed through the intelligent control system. Finally,the key technology development of an intelligent fully mechanized face under the guidance of digital twin theory is analyzed from four aspects including real physical topological relations,data transmission and fusion method,intelligent decision control algorithm and predictive maintenance mechanism,which means some preliminary works for the target of intelligent coal mine and intelligent mining.