High inclination-angle ladder way opposite direction excavating construction method in thin layer breaking up hard rock stratum

The invention discloses high inclination-angle ladder way opposite direction excavating construction methods in thin layer breaking up hard rock stratum, including following construction procedure: step S1: preparation of construction；Step S2: lower pilot tunnel construction；Step S3: upper pilot tunnel construction；Step S4: go out slag forming；Step S5: bottom plate and two lining concrete constructions.The beneficial effects of the present invention are: the present invention is few using reversed excavation disturbance number, supporting construction is stable, safe and reliable；Combination of sciences of the present invention using construction technologies such as unilateral wall, two side-wall pilot tunnel, benching tunnelling methods, the contradiction between safety and progress effectively handled；Speed of application of the present invention is fast, and construction cost is low, small on ground surface environment, existing buildings influence, and economic benefit is significant with social benefit；Practicability of the present invention, strong operability.