关键词: 矿井巷道, 单层衬砌, 复合纤维混凝土, 耐久性试验

Abstract: Taking the supporting structure of mine roadway as the research background， the durability of composite fiber reinforced concrete was investigated and compared with that of the plain concrete. The conclusions are shown as follows: ①The impermeability test shows that the seepage height of CFC reaches 12.0 mm， which is lower than 14.2 mm of plain concrete； ②Early crack test shows that the crack reduction coefficient of CFC reaches 0.66， which can effectively reduce early cracking； ③Through carbonization test， electric flux test and sulfate corrosion test， the composite fiber concrete obtained has features of small carbonization depth， large electric flux and strong erosion resistance. The results can provide a reference for the research and application of composite fiber spraying concrete in mine roadway to a certain extent.

Key words: Mine laneway, Single shell lining, Composite fiber concrete, Experiment on durability