Supporting tool system for multi-layer inverted arch construction of salt rock tunnel stratum

A supporting tool system for multi-layer inverted arch construction of a salt rock tunnel stratum comprises a full-closed formwork and a self-propelled long trestle bridge, the full-closed formwork isprovided with a head baffle and a middle long formwork distributed in the axial direction of a tunnel, and the middle long formwork and the wall face of a tunnel operation area are spaced by a presetdistance; a concrete to-be-filled area is defined by the fully-closed formworks and the wall face of the tunnel operation area, and the self-propelled long trestle is used for assisting movement of the middle long formwork. The full-closed formwork can be adopted for pouring, the shape and the size of a pouring structure and the construction quality are guaranteed, especially a pouring waterproofstructure, and the requirements of procedures and traffic organizations are met through the self-propelled long trestle. 一种盐岩隧道地层多层仰拱施工配套工装系统，包括全封闭模板和自行式长栈桥，全封闭模板设有挡头板和沿隧道轴向分布的中间长模板，中间长模板与隧道作业区壁面相隔预设距离，全封闭模板与隧道作业区壁面围合形成混凝土待填充区