Based on the traditional blast opening, this paper puts forward the construction method of the direct through cut of the entry-driving machine, introduces the techniques for the through cut, and sums up the advantages of the through cut of the entry-driving machine.

After theoretical calculating and numerical modeling, realized the big cross section open-off cut support with bolts and cables, the support parameter is proper and yield good economic returns.

According to the characteristic of the open-off cuts,we have improved the structure of retrievable cement metal bolts so that it can be used in open-off cuts.

Through applicating bolt support in open-off cut in fully-mechanized mining workface,this paper introduces parameter design of bolting with wire mesh in large section roadway and stantards of some auxiliary materials,working craft and economic results of technology are summarized.

Research show that the open-off cut position plays a key role in the slope stability.