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Research On Rapid Disease Seismic Exploration Of Urban Roads Buried Based On The Energy Frequency Properties

Posted on:2020-01-09Degree:MasterType:Thesis
Country:ChinaCandidate:H GuiFull Text:PDF
GTID:2392330575453729Subject:Geological Resources and Geological Engineering
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In recent years,urban road surface collapse accidents occur frequently in China,seriously threatening the normal production and life of the city,but the existing detection technology has certain limitations for solving such problems.Therefore,it is urgent to strengthen the research on rapid detection technology of urban underground hidden diseases.In this paper,based on the energy frequency attributes of urban road hidden disease seismic fast detection,through theoretical analysis,forward simulation and field test detection,the following understanding has been achieved:(1)The energy attenuation and dispersion characteristics of seismic waves are sensitive to the response of underground voids,which verifies the feasibility and effectiveness of exploring hidden diseases of urban roads by using the dispersion and energy attenuation characteristics of seismic waves.(2)The energy attenuation characteristics of seismic waves are sensitive to the size of underground voids and the change of fillings,and the detection effect of energy attenuation characteristics of seismic waves is ideal.However,the detection effect is not ideal for the change of buried depth of underground cavity.(3)The dispersion characteristics of seismic waves are sensitive to the variation of the size and depth of underground voids,and the detection effect of seismic wave dispersion is ideal.However,the detection effect is not ideal for the change of filling materials with underground voids.(4)The energy attenuation and dispersion characteristics of seismic waves can be used to detect abnormal areas of underground voids,and the dispersion characteristics of seismic waves are better than the energy attenuation characteristics on the whole.Its characteristics are more obvious and easy to distinguish,and it is an effective feature to distinguish underground voids.(5)Combined with forward simulation and field test results,it shows that it is feasible and effective to use the dispersion and energy attenuation characteristics of seismic waves in the detection of hidden diseases of urban roads.Figure 30 Table 2 Reference 93...
Keywords/Search Tags:geophysical exploration, urban engineering exploration, geological hazards, dispersion characteristics, energy attenuation, forward simulation
PDF Full Text Request
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