Shield tunneling machine auxiliary continuous high-pressure de-trapping propelling system and de-trapping propelling method

The invention discloses a shield tunneling machine assisted continuous high-pressure de-trapping propelling system and a de-trapping propelling method. The problem that in the prior art, de-trapping of a shield tunneling machine cannot achieve propelling pressure maintaining and continuous de-trapping tunneling under complex geological working conditions is solved. The auxiliary continuous high-pressure escape propelling system of the shield tunneling machine comprises an ultrahigh-pressure escape isolation switching valve communicated with a rodless cavity of a propelling oil cylinder, and a pilot control system and a high-pressure escape system are connected to the ultrahigh-pressure escape isolation switching valve. The pilot control system comprises a control pump and a pilot control valve group, the pilot control valve group is communicated with an X port of the ultrahigh pressure release isolation switching valve and controls connection and disconnection of an A port and a P port of the ultrahigh pressu