Application of High Performance Concrete to Backfilling Along Side of Gateway Retained Along Goaf
Abstract：With the analysis and study on the high performance concrete applied to thegateway side backfilling and support trial along the gateway retained along goaf of No.18205 coal mining face in Tunlan Mine,the paper summarized the composition,performances and features of the material and the requirements of the backfilled wall structure and backfill technology.The paper analyzed the existed problems and occurrence causes.The provided the control countermeasures and prevention measures.The results showed that the high performance concrete with excellent mechanics performances could be applied to the backfill support of the gateway side of the gateway retained along the goaf.The backfilled wall would be built with a high and wide ratio of 1.0∶0.7 and with proper structure steel bars.The cracks in the backfilled wall could be sealed with organic grouting material.The high performance concrete could be applied as the backfill material and the stability of the backfill wall would be good.The high performance concrete could be promoted and applied to the backfill support of the gateway retained along the goaf.
Keywords：high performance concretegateway retained along goafbackfilling along gateway sidebackfilled insolated wall
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)