Needle Beam Trolley Lining Construction Technology for Small Curve Radius Section of Small-section Hydraulic Tunnel
In view of the characteristics of small diameter and small curve radius of the water conveyance tunnel,in order to improve the linear quality of the lining,ensure the thickness and integrity of the lining,and expand the application scope of the needle beam trolley,a lateral adjustment device is developed.With the unbalanced adjustment of the travel of the supporting cylinders on both sides of the formwork,the needle beam trolley has lateral displacement and certain turning ability.This method can realize the good fit between the trolley formwork and the lining design contour line,so that the needle beam trolley can adapt to the efficient construction of the lining on the small curve radius section of the small section tunnel.
hydraulic tunnelsmall curve radiusneedle beam trolleylining construction