The development of drilling and blasting Nowadays, under different geological conditions, construction period and quality requirements, tunnel construction methods are also diverse.

The number and scale of mountain tunnel engineering projects are gradually expanding, and higher requirements are placed on engineering construction technology. During the construction of this type of project, the speed of tunnel excavation will directly affect the construction period of the project, and the excavation operation is restricted by the quality of the operating equipment itself, operating time, operating sequence, and operating steps.