Application of bolting support for large section open-off cut;

,the bolting support in the large section open-off cut of fully mechanized caving face was very difficult.

Application of Anchor in Comprehensive Mining Cut Construction;

This article introduces supporting practice of network anchor beams for the large section cut under complicated conditions,adopting network anchor beams supporting design and optimizing it by using the method of chemical grouting to consolidate spalling rib roof,providing ensurance for the large section cut secure,rapid excavation work.

This article mainly introduces cut support technology of 7605 large fractured section of Wuyang coal mine fully mechanized working face,problems and solutions in process of tunneling,provide a strong technical basis and experience for coal mine to cut such cut.

Analysis and countermeasure on breakage of starting cut with bolting;

This paper determined the parameters of the support using bolting wire mesh and reinforced band in Xingtai Colliery's fully mechanized starting cut no.

The support method of cutting hole in Dongrong No.

By analyzing the change factors of working face′s length impacted by the seam angle,the paper reasonably determined installation quantity and location of coal winning set both in internal and outer cutting holes.