浅谈隧道大管棚施工中钻孔倾斜的处理措施

On the treating measures of drilling holes inclination in the construction of large tunnel pipe roof

介绍了管棚支护结构的特点,对钻孔倾斜的原因进行了详细分析,提出了纠正钻孔倾斜的措施,并结合具体工程实例,介绍了隧道大管棚施工的步骤,指出通过预留合适的上抬量及增加稳定器可以有效控制管棚的下垂量,从而保证隧道的安全施工。

It introduces the features of tunnel pipe roof supporting structure,elaborates the reason of drilling holes inclination,and corrects the measures that cause the inclination of drilling holes.Meanwhile,combined with projects,it introduces the construction steps of tunnel pipe roof,and points out that the sinking degree of tunnel pipe roof can be effectively controlled through reserved proper elevating degree and stabilizer,which can guarantee the safe construction of tunnels.