Study About Ateel-fiber Shot Concreting In Ventilation Shaft Of Jieling Tunnel

The boundary Ling tunnel is located in the proper Yi Ling area in Chang City of proper superhighway Ba in Hubci inshore, the all of left line grows a5653ms, the all of right line grows a5681ms and requests according to the tunnel airiness, ZK81+320-ZKs81+s620left sides draw up to set up one well ventilated inclined well and head for267oand mostly present the near thing grows a293.643ms to the all of exhibition cloth, the Qing Cape is25o, biggest cover up deeply about the120ms, the tunnel because of being crossed river by fog to greatly split of influence, round a rock circumstance with graphite slice rock, inclined long slice numb rock, black cloud diorite is lord, and in order to being placed in sulphur iron mine to mine area, the fluid matter presents causticity.For ensure tunnel to start construction safety, speed tunnel construction progress, promise an initial stage protect, two Chens carve of function, protect a form mold to build concrete and steel fiber concrete to carry on a comparison to the tunnel’s well ventilated inclined well2, mainly study a contents and result as follows:①, The foundation investigated in the domestic and international related data up, understand and tally up the application of the tunnel steel fiber concrete construction.②, Aiming at should inclined well steel fiber jet concrete two Chens carry on its stability of model analysis and carry on a monitor research, pass to contrast tunnel to open to dig to protect a front and back calculation and monitor a result on the scene, the tunnel adopts a steel fiber to spray after concrete protect, to a large extent improved to round the being subjected to of rock dint status.③, Carry on experimenting a research to basic mechanics and other functions of steel fiber jet concrete, make sure a CF30steel fiber to jet concrete to used for tunnel well ventilated inclined well of boundary Ling of the mechanics characteristic data index sign.④, Distribute a characteristic to carry on experimenting a research to bent tenacity and fiber of steel fiber jet concrete,⑤, The mold builds two Chens and steel fiber concretes well ventilated ability of two Chens to the inclined well of concrete to carry on a calculation comparison and pass theory calculation analysis to explain after the tunnel’s well ventilated inclined well designs to change, the well ventilated ability of the inclined well can completely satisfy an original design request.⑥, Pass to build concrete to the mold two Chens and steel fiber concretes two costing of Chens analysis⑦, Start construction to the steel fiber jet concrete craft and quality to make a request.