1) stent tube aversion
2) supports deformation
3) temporary support shift method
4) movable support
Technical manage for movable support top-coal drawing face;
Affected by the geological conditions,the impact of 11121 face caving coal seam during mining can not be taken until the gradual thinning to take forward during the pre-mining-oriented will be removed and replaced movable support for the π-shaped Steel Beam with single hydraulic props supporting the methods to ensure normal production of the mine production plan and to succeed.
5) cantilever support
Xieyi Coal Mine used the roof caving technology of cantilever support to realize high effective and safe production,which obtianed good effect.
The cantilever support mining was successfully applied at No.
6) suspension support
Experimental study of support technology of combined suspension support with whole roof beam;