Subway tunnel pressure-relief-hole air pressure control method and system

Abstract

The invention discloses a subway tunnel pressure-relief-hole air pressure control method. The method comprises the steps that S1, related parameters of a train is collected by a system and comprise the travelling speed and the departing mode; S2, data of the work environment are collected and adjusted by the system, and the data comprise the tunnel area, the air shaft area, the tunnel portal area and route position arrangement; S3, the system establishes a pressure wave datum analysis model and calculates tunnel section pressure change threshold distribution; and S4, the system judges whether a simulated result meets the pressure comfort requirement or not, if met, simulation is finished, if not met, the areas, numbers and positions of pressure relief holes and pressure relief air pipes are obtained through calculation according to the simulated result, and the step S2 is repeated and circularly executed till the pressure requirement is met. The invention further discloses the subway tunnel pressure-relief-hole air pressure control system, the situation that pressure wave change generated in the high-speed travelling process of a train affects the riding comfort of passengers can be effectively relieved, user experience is good, and the subway tunnel pressure-relief-hole air pressure control method and system are widely applied to the field of subways.

Description

technical field [0001] The invention relates to the field of tunnel air pressure control, in particular to an air pressure control method and system for a subway tunnel pressure relief hole. Background technique [0002] At present, domestic urban rail transit is developing rapidly, such as the rapid development of first-tier cities such as Beijing, Shanghai, Guangzhou, and Shenzhen, the pace of urban life is accelerating, citizens' travel requirements are gradually increasing, and the demand for urban rapid rail transit is increasing day by day. However, in the current operation of urban rapid rail transit lines, when the train is running in the tunnel, when the tunnel section changes, the viscosity of the air and the frictional effect of the airflow on the tunnel wall and the surface of the train cause the air pressure in the tunnel to change, resulting in pressure fluctuations . This pressure fluctuation propagates at the speed of sound, forms a reflected wave in the tun...

AI Technical Summary

Problems solved by technology

2 Reduce the running speed of the train, reduce the service level of the operation, and completely lose the meaning of rapid rail transit

3 Enlarging the tunnel section, using the ordinary shield hook tunnel section (diameter: 5.4m) about 60,000 / long meter, increasing the tunnel section (diameter: 6.0m) about 20,000 / long meter, and increasing the investment of ordinary lines by about 6 billion and The difficulty of construction is greatly increased

[0004] The above measures have greatly increased the difficulty of project implementation and investment costs, and even reduced the service level of operations, which is far from meeting the travel needs of passengers and has lost the meaning of urban rapid rail transit.

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