Roadway excavation is not only one of the important links of coal mining,but also an important prerequisite for safe mining,which has a significant influence on coal mine benefits.In order to improve the efficiency and safety of rapid excavation of roadway,this paper takes the rapid excavation roadway in a coal mine as an example to analyze three factors affecting rapid excavation;calculates the support parameters of the rapid excavation roadway according to the conditions,designs the support scheme,and adopts the FLAC 3D numerical simulation to verify the feasibility of the support scheme.Combined with the overall characteristics of the rapid excavation unit,the rapid excavation process of the roadway is optimized,and the installation of the bolt and anchor cable and the lag distance of the bolt transfer machine are adjusted.It can be seen from the verification that the design improves the excavation rate and can provide reference for similar projects.
万方数据
维普
