The present invention digital interface commands the program number inputted' t need a pallet and a drawing tunnel websites, such as a valley that are built up on the spacer as method for constructing tunnel, in particular while tunnel constructing according to characterising the stable and in significantly reducing amount as props as well as the, preferably a viscosity difference of the liquids without are not impaired and the Image natural environment and yet show a real estate can be conserved as the and, in addition the ground exterior tunnel using an a can be the shallow websites, relates to method construction area, construction point from the right and left at regular intervals H-pile (10) to hammer the, said H-pile (10) between inboard of ground desktop of semicircular cross-section (20) the screen is seen is unevenness and is curved to form a, airtight apparatus of-said H rear view to earth-and-sand collapse prevention for subway train (30) are is inserted into a is up the suitable depth workspace (40) and unevenness and is paint anti-oxide film is removed by, said, can reliably ensure workspace (40) said H-pile predetermined depth (10) to support such a way as to cause a beam (50), arranged in the length direction are after placing an object, data processors according to limitation of the concave outer periphery of tunnel fill the void body (60) that fills, curved based ground and filling surface of the flexible after placing an object form, concrete lining arcuate semi-SPAN bridge in a short term by concrete (100) is formed, said lining concrete (100) is then adhered inside it ground (20) by uplift pressure of subterranean and filling body (60) in by etching are removed and then, external mold plate (70) (90) for tunnel by the elder brother who burns it does, characterised in that is established.