Safety early-warning analyzer for freezing construction for connecting aisle of tunnel and working method of safety early-warning analyzer
A communication channel and safety early warning technology, which is applied in earth cube drilling, mining equipment, mining equipment, etc., can solve problems such as unrepresentable pressure, achieve convenient detection, realize construction safety status evaluation, and intelligent construction safety status evaluation.
Active Publication Date: 2013-03-13
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
This method requires multiple waterproof signal transmission cables in a frozen pipe, and each electronic sensor needs good waterproof and moisture-proof protection; the monitoring of frozen soil pressure is mainly carried out by the earth pressure cell buried in the soil layer. In this method, the earth pressure cell is only buried in the soil layer close to the segment, and the monitored earth pressure cannot represent the pressure in other parts of the soil layer
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[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0044] Such as figure 1 As shown, the embodiment of the present invention provides a safety early warning analyzer for frozen construction of the tunnel communication channel, which includes a fiber grating sensor, a data acquisition device, a data analysis device, a monitoring and early warning device, and a display device.
[0045] The fiber grating sensor is implanted on the measured object and connected in series to the data acquisition device;
[0046] The data acquisition device collects light wave signals in real time and transmits them to the data analysis device;
[0047] The data analysis device is composed of data storage, data calculation, data analysis and numerical simulation coupling modules. The analysis device classifies and stores the collected light wave signals in real time, and uses corresponding algorithms to analyze temp...
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The invention belongs to the technical field of freezing construction for connecting aisles of tunnels, and provides a safety early-warning analyzer based on a fiber brag grating for freezing construction for a connecting aisle of a tunnel and a working method of the safety early-warning analyzer. The safety early-warning analyzer comprises a front-end fiber brag grating sensor, a data acquiring device, a data analyzing device, a monitoring early-warning device and a displaying device, an output end of the front-end fiber brag grating sensor is connected with the data acquiring device, the data acquiring device is connected with the data analyzing device, an output end of the data analyzing device is connected with the monitoring early-warning device, and the monitoring early-warning device is connected with the displaying device. The safety early-warning analyzer and the working method have the advantages that the temperature of frozen soil, strain and deformation of the existing tunnel in a freezing process can be continuously monitored in real time, and a safety state of the tunnel is assessed in real time.
Description
technical field [0001] The invention belongs to the technical field of freezing construction of tunnel connecting passages, and in particular relates to a safety early warning analyzer for freezing construction of tunnel connecting passages based on optical fiber gratings and a working method thereof. Background technique [0002] The communication channel is an important guarantee for the operation of the tunnel. At the present stage, the frozen construction of the communication channel has been more and more widely used in urban municipal construction such as subways due to its good soil improvement under the unfavorable geological conditions of high water pressure and weak strata. . Artificial freezing construction technology has the characteristics of reliable technology, mature technology and controllable construction: [0003] 1) Good water sealing. Free water can freeze into permafrost, forming a permafrost wall. Whether it is a permeable layer or a water-resistant...
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IPC IPC(8): E21F17/18
Inventor 丁烈云周诚李勇军叶肖伟骆汉宾邓庆绪倪一清王承山郭谱徐延召
Owner HUAZHONG UNIV OF SCI & TECH