高分辨率单道地震探测技术在内陆浅水区的试验研究

doi:10.11720/wtyht.2022.1479

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Abstract

With the advantages of flexible configuration,convenience,high efficiency,and resolution,the single-channel seismic detection technology has been widely used in marine geological surveys and offshore engineering geophysical prospecting.However,there are few cases of the application of this technology in inland rivers and lakes.Therefore,an experimental study on the high-resolution single-channel seismic detection technology targeting the inland shallow waters of Baiyangdian Lake,Xiongan New Area,Hebei Province was conducted.The application effects using key acquisition parameters,including excitation energy,excitation interval,sailing speed,and the number of receiving units,were compared to determine the optimal parameter combination.A set of single-channel seismic data processing processes and methods for inland shallow waters were developed to gradually attenuate all kinds of noises and improve the signal-to-noise ratio and resolution to the greatest extent.The experimental results show that the single-channel seismic detection technology for inland shallow waters can finely divide the shallow stratigraphic structure in the waters.Moreover,the division effects agree well with drilling data.Therefore,this technology can effectively support the investigations of environment,geology,and geologic hazards in inland rivers and lakes.

Key words： inland shallow water area high resolution single-channel seismic geological structure in shallow waters

Received: 30 August 2021 Published: 17 August 2022

ZTFLH:

P631.4

Corresponding Authors: ZHANG Ming-Dong E-mail: yuehangyu_cgs@163.com;765021763@qq.com

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	Hang-Yu YUE
	Ming-Dong ZHANG
	Bao-Wei ZHANG
	Guang-Ke WANG
	Xiao-Jiang WANG
	Dong-Ming LIU

Cite this article:

Hang-Yu YUE,Ming-Dong ZHANG,Bao-Wei ZHANG, et al. An experimental study on the high-resolution single-channel seismic exploration technology for inland shallow waters[J]. Geophysical and Geochemical Exploration, 2022, 46(4): 914-924.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2022.1479 OR https://www.wutanyuhuatan.com/EN/Y2022/V46/I4/914

The location of the test area

Field work diagram of single-channel seismic detection in inland shallow water area
a—release the Boomer source;b—drop the hydrophone cable;c—towed single-channel seismic acquisition

Comparison of single-channel seismic profiles with different source energy
a—100 J; b—200 J; c—300 J

Comparison of single-channel seismic profiles with various excitation interval
a—333 ms; b—400 ms; c—533 ms

Comparison of single-channel seismic profiles with different sailing speed
a—3 kn;b—4 kn

Comparison of single-channel seismic profiles with various receiving units
a—16 units; b—24 units

Key technology and process of of single-channel seismic data processing in inland shallow water area

Result comparison of different data processing methods for single-channel seismic detection in inland shallow water
a—raw data;b—bandpass filtering; c—multiple suppression; d—signal enhancement

Spectrum comparison of different data processing methods for single-channel seismic detection in inland shallow water
a—raw data;b—bandpass filtering;c—multiple suppression;d—signal enhancement

The result of single-channel seismic detection in inland shallow water area
a—depth profile of single-channel seismic;b—geological interpretation section

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