Discussion on equipment technology status and key technology of roadway driving

Through the research on the generation, application and development of coal mine roadheader, it is found that original invention of the cantilever roadheader is not applied to the anchorage roadway.The temporary support and airborne drilling tools installed on cantilevered roadheaders can not achieve uniformity between safety and effectiveness.It is impossible to achieve intrinsic progress through the devices installed on roadheader.Through the research on the evolution of auxiliary supporting equipment, it is found that in many cases, the auxiliary devices are not effective.The stepping support is repeated support on the the opened roof, the action is slow, and the stability is poor.The temporary support equipment itself is not intrinsically safe, and it can not meet the requirements of the temporary support requirement.The frame structure design of the crawler travel bracket is the bottleneck of this kind of bracket, and the contradiction between flexibility and adaptability is difficult to reconcile; the research found that temporary support of excavation auxiliary system need to be solved by the research on the combined excavation unit; It is proposed that the existing tunneling machine structure must be broken,and at the same time, the five key technologies for the development of the new road header should be discussed.