Shield tunnel mixed gas detection system and method
A mixed gas and detection system technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of low utilization rate of gas information, inability to form linkage of different gas information, redundant equipment layout, etc.
Pending Publication Date: 2022-01-21
SHANDONG UNIV
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Problems solved by technology
[0003] At present, during the construction of shield tunnels, when monitoring environmental gases, most gas monitoring equipment can only monitor a single type of gas and use wired information transmission technology. They cannot be linked with each other, and cannot comprehensively study the interrelationships between different gas types and concentrations, resulting in low utilization of gas information, and cannot play the role of perception and early warning in the process of shield tunnel construction.
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Embodiment 1
[0044] As introduced in the background technology, during the construction of the shield tunnel, there are two technical problems for gas detection: one is the independence of the eight gases, and it is necessary to ensure that the monitoring data of each gas do not interfere with each other; The second is that the concentration information obtained by the monitoring equipment on the front shield machine needs to be wirelessly transmitted to the rear computer platform.
[0045] Based on this, this embodiment provides a mixed gas detection system suitable for shield tunnels, such as figure 1As shown, it includes: a mixed gas detection module, a processing module and an alarm module; the mixed gas detection module includes an ambient gas detection module, a combustible gas detection module and a toxic gas detection module connected in sequence, and the There is a gas separation membrane between the detection modules;
[0046] The ambient gas detection module is used to receive ...
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The invention discloses a mixed gas detection system and method for a shield tunnel. The mixed gas detection system comprises a mixed gas detection module, a processing module and an alarm module, wherein the mixed gas detection module comprises an environment gas detection module, a combustible gas detection module and a toxic gas detection module, and a gas separation membrane is arranged between the environment gas detection module and the combustible gas detection module; the environment gas detection module is used for receiving the detected mixed gas and detecting the concentration of oxygen and carbon dioxide in the mixed gas; the combustible gas detection module detects the concentration of the combustible gas separated by the gas separation membrane; the toxic gas detection module detects the concentration of toxic gas in the residual gas; the processing module corrects the gas concentration based on the compensation model, and judges whether the gas concentration exceeds the limit or not according to the corrected gas concentration; the compensation model is obtained by training a measured value of a mixture of different gases with known concentrations and a standard value; the alarm module is used for carrying out over-limit alarm. According to the system, monitoring of eight gases is realized, and over-limit alarm and information linkage are realized through wireless data transmission.
Description
technical field [0001] The invention relates to the technical field of environmental geology, in particular to a mixed gas detection system and method for a shield tunnel. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] At present, during the construction of shield tunnels, when monitoring environmental gases, most gas monitoring equipment can only monitor a single type of gas and use wired information transmission technology. They cannot be linked with each other, and the interrelationships between different gas types and concentrations cannot be comprehensively studied, resulting in a low utilization rate of gas information, and cannot play the role of perception and early warning in the process of shield tunnel construction. Contents of the invention [0004] In order to solve the above problems, the present invention proposes a mixe...
Claims
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Login to View More IPC IPC(8): G01N33/00
CPCG01N33/0032G01N33/0063
Inventor 王旌韩义哲李利平熊逸凡孙尚渠门燕青巴兴之房忠栋
Owner SHANDONG UNIV