System for relieving secondary micro-pressure waves of high-speed railway tunnel

The invention belongs to the technical field of mechanical devices, and relates to micro-pressure waves of a high-speed railway tunnel, in particular to a relieving system for secondary micro-pressure waves of the high-speed railway tunnel, which comprises the high-speed railway tunnel (1), and a vertical shaft (3) communicated with the outside is arranged on the inner top surface of the high-speed railway tunnel (1) along the advancing direction of a train; the structure is characterized in that an open space (17) with the width 1.1-1.2 times of the diameter of the vertical shaft is excavated at the top in the high-speed railway tunnel (1) and in front of the vertical shaft (3) in a penetrating manner, and the inner top surface of the open space (17) is 0.8-1.5 m higher than the top point of the top surface of the high-speed railway tunnel (1). The device is reasonable in design, aims to prevent the secondary micro-pressure wave phenomenon generated when a train passes through the vertical shaft while the in