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Technology Application on the Airbridge Maintenance Construction in Coal Pillars Recovery
Author(s): 
Pages: 12-13
Year: Issue:  Z1
Journal: Xishan Science & Technology

Keyword:  Strengthening supportArtificial compound roofLayout along coal seam roof;
Abstract: When coal pillar recycling,has the abandoned roadway and the airbridge between hypostatic coal pillar,destroys aggravatingly by the influence of mining.Its abandoned roadway is easy to maintain,but airbridge shoulders the role of air intake and pedestrian,the up and down two roadways overlaps,the stress superimposes,after the whole expose,the section and the height of the roadway increases,it is difficult that maintenance and recycling of the coal seam of airbridge.Presently through an example of maintenance method as the artificial compound roof of anchor,net,beams,flange beam combination,the roof obtains effective reinforcement,successfully recycles the coal pillar to the scope.
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