TBM mounted type tunnel front surrounding rock radioactivity forecasting system and method
A forecasting system and radioactivity technology, applied in radiation measurement, X/γ/cosmic radiation measurement, instruments, etc., can solve the problems of difficulty in eliminating statistical errors, consuming a lot of manpower and financial resources, and difficult radioactivity testing methods, saving manpower , the effect of eliminating statistical errors and timely and accurate forecasting
Active Publication Date: 2020-06-02
SHANDONG UNIV
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Problems solved by technology
[0005] (1) TBM heavy equipment occupies most of the space in the tunnel, making it difficult for traditional radiation testing methods to be carried out in the narrow part of the tunnel, which cannot meet the requirements of radiation testing;
[0006] (2) The traditional manual testing method uses a handheld radioactive tester to test, which cannot meet the needs of timely and long-term testing of the radionuclide content in rocks, and requires a lot of manpower and financial resources;
[0007] (3) Due to the randomness of nuclear decay, it is difficult to eliminate the influence of statistical errors by traditional manual testing methods
Method used
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[0037] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.
[0038] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
[0039] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
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The invention provides a TBM mounted type tunnel front surrounding rock radioactivity forecasting system and method. The system comprises a sampler, a data processing and analyzing module and a shielding shell; the sampler is arranged on a telescopic support, the telescopic support is fixed to a TBM, and at least two openings are formed in the shielding shell and used for allowing a rock sample toenter and allowing tested rock powder to be discharged respectively; a transmission device is arranged in the shielding shell; a gamma ray testing device and a rock sample monitoring device are arranged on a transmission path of the transmission device; a rock sample grinding device, a rock sample screening device and a radionuclide testing device are sequentially arranged at the tail end of thetransmission path; and the data processing and analyzing module receives the gamma ray concentration and the radionuclide content, calculates the corresponding relation between the gamma ray concentration and the radionuclide content of the same lithologic stratum, and forecasts the radioactivity in front of the tunnel face.
Description
technical field [0001] The disclosure belongs to the technical field of advanced tunnel prediction, and in particular relates to a radiation prediction system and method for surrounding rocks in front of a TBM-mounted tunnel. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Natural radionuclides mainly include uranium series, thorium series and actinide series. The nuclei of these radionuclides are in an unstable state and can spontaneously transform into another atomic nucleus and emit a special ray. The main nuclear decay types in nature are Alpha decay, beta decay, and gamma decay, etc. The radiation released by these nuclear decays is very harmful to the human body. The central nervous system and blood system of the human body exposed to the radiation will be damaged, and the chromosome will be deformed. In severe cases, the exposed p...
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Patent Timeline
Login to View More IPC IPC(8): G01T1/202G01T7/08G01T7/02G01T7/00
CPCG01T1/202G01T7/08G01T7/02G01T7/00
Inventor 许振浩余腾飞谢辉辉黄鑫许建斌陈司石恒
Owner SHANDONG UNIV