Test method for simulating active damage of shield tunnel excavation face
A technology of tunnel excavation and test method, which is applied in the direction of tunnels, earthwork drilling, mining equipment, etc., can solve the problems of not considering the early excavation process of the model shield, and achieve the effect of scientific model test results
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[0042] Implementation method and effect:
[0043] The above example of the present invention, through the method of installing miniature earth pressure gauge and miniature piezometer on the cutter head of the model shield machine, pre-buried grating scale displacement gauge in front of the excavation face, and buried LVDT displacement gauge on the ground surface, completed a simulated shield tunneling The monitoring scheme of the test method for the active failure of the tunnel excavation surface; through the test method of the cutter head of the model shield machine idling and the screw excavator unearthed, the process of active destruction of the real shield machine is simulated. From this, the limit support force on the excavation face of the model shield machine, the soil damage area in front of the excavation face and the surface subsidence range can be obtained. The invention can be used to simulate the process of actively destroying the excavation surface of the shield ...
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