Shield pressure maintaining system experiment device and use method thereof
An experimental device and pressure-holding technology, which is used in measurement devices, earth-moving drilling and mining, and testing of machine/structural components. High performance, reducing data errors, and precise control effects
Pending Publication Date: 2022-03-04
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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Problems solved by technology
Due to the lack of suitable experimental devices and methods for the pressure holding system in the prior art, it is impossible to scientifically test and evaluate the performance of the shield pressure holding system, which affects the progress of industry technology, and is an urgent problem for those skilled in the art.
Method used
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specific Embodiment 1
[0027] The structure of the experimental device of the shield pressure maintaining system is as follows: figure 1 As shown, it includes a vertical storage tank 1, a simulated mud tank 19, a main air intake pipeline, an auxiliary air intake pipeline, a main exhaust pipeline, an auxiliary exhaust pipeline, and a shield pressure-holding system to be tested. The vertical storage tank 1 The air inlet end is used to connect with the air compressor (not shown in the figure), and the air outlet end is connected to the simulated muddy water tank 19 through the main air intake pipeline. The system is mainly composed of a pneumatic controller 27, an intake valve 13 and an exhaust valve 22. Both the intake valve 13 and the exhaust valve 22 are pneumatic valves, and the pneumatic controller 27 can be a SAMSON 3421 type pneumatic controller. On the upstream position of the main air intake line and the auxiliary air intake line, the first on-off valve 3, the pressure reducing valve 5, and th...
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The invention relates to a shield pressure maintaining system experiment device and a using method thereof.The shield pressure maintaining system experiment device comprises a vertical storage tank, a simulation slurry bin, a main air inlet pipeline, an auxiliary air inlet pipeline, a main exhaust pipeline, an auxiliary exhaust pipeline, a to-be-tested shield pressure maintaining system and a display instrument, and the to-be-tested shield pressure maintaining system comprises a pneumatic controller, an air inlet valve and an exhaust valve; the auxiliary air inlet pipeline is connected with the main air inlet pipeline in parallel, and the auxiliary exhaust pipeline is connected to the main exhaust pipeline. Different working conditions faced by a shield pressure maintaining system during shield working can be simulated by respectively controlling on-off of a main air inlet pipeline, an auxiliary air inlet pipeline, a main exhaust pipeline and an auxiliary exhaust pipeline, and a pneumatic controller compares a target value with a measured air pressure signal in a simulated muddy water bin and outputs a control signal to adjust the opening degrees of an air inlet valve and an exhaust valve. An operator can observe the response speed and effect of the to-be-tested shield pressure maintaining system under different working conditions through the display instrument, and the comprehensive performance of the to-be-tested shield pressure maintaining system is truly reflected.
Description
technical field [0001] The invention relates to the technical field of shield tunneling pressure maintaining system experiments, more specifically, it relates to a shield tunneling pressure maintaining system experimental device and a method for using the same. Background technique [0002] Due to its advantages of fast construction speed and high safety, shield machines are widely used in the construction of roads, railways, tunnels and other projects. Shield tunnels under water or with strict settlement requirements generally need to be constructed with mud-water shields. The pressure-holding system is one of the core systems of mud-water shields. The adjustment accuracy of mud-water pressure is related to the stability of the working face and the surface settlement; Therefore, the stability and reliability of the pressure-holding system directly affect the construction safety and quality. Due to the lack of suitable experimental devices and experimental methods for the p...
Claims
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Login to View More IPC IPC(8): G01M99/00E21D9/06
CPCG01M99/00E21D9/06
Inventor 曾垂刚王凯李凤远张兵韩伟锋陈瑞祥周建军徐燃陈林李志张合沛高会中任颖莹陈桥王发民
Owner CHINA RAILWAY TUNNEL GROUP CO LTD