Engineering Application of Steel Fiber Concrete in Freezing Shaft Wall of Deep and Thick Alluvium

For the problem that freezing shaft wall in deep and thick alluvium bears high water pressure, high geo-stress and other external load, we use steel fiber, silicon powder, mineral waste reside, high efficiency concrete to produce CF75 high strength high performance steel fiber concrete for constructing shaft lining, and study its mechanical property, monitor the engineering application of steel fiber concrete. The results show that the circumferential and vertical maximum strain of freezing wall reaches 1 170 and 164 respectively, which is within the ultimate strain of concrete and meets the safety requirements.