Dispersion Characteristics of SH Transmitted Channel Waves and Comparative Study of Dispersion Analysis Methods

Wang, Bo; Liu, Shengdong; Zhou, Fang; Hu, Zean; Huang, Li; Jiang, Yonghu

doi:10.1166/jctn.2016.5069

Cited by 6 publications

(2 citation statements)

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“…Due to the dispersion characteristics of channel waves, the use of the stacking migration method will produce more events. Therefore, using the Hilbert transform to calculate the envelope, accurate velocity information is obtained by dispersion analysis when extracting the energy extremes of the Airy phase envelope [25,26].…”

Section: Dispersion Analysis and The Elliptical Tangent Methodsmentioning

confidence: 99%

Quantitative Evaluation of Faults by Combined Channel Wave Seismic Transmission-Reflection Detection Method

Guang

Wang

et al. 2022

Minerals

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The quantitative detection of faults using the channel wave seismic method has been a major but challenging area of interest. In this study, we adopted an effective technical process to evaluate fault attribution. First, we use integrated transmission and reflection channel wave information to improve the accuracy of extraction velocity. Then, the location of the fault is determined by the elliptical tangent offset method, and feature extraction and fault location extension determination are achieved through logistic regression and a neural network. This is combined with the prior geological information, the fractional dimension D to the quantitative analysis of the fault throw. Data regarding the 4203 working face of a mine in Shanxi, China, are considered as an example. Two groups of faults were predicted, with the location error in the f30 fault position as 6.7 m. In addition, the f29 fault throw first increased, and then gradually decreased from the return airway to the haulage gateway. These predicted results have been drill-verified and were used to modify the original design. The proposed method has good stability and promising application prospects for fault evaluation.

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Section: Dispersion Analysis and The Elliptical Tangent Methodsmentioning

confidence: 99%

Quantitative Evaluation of Faults by Combined Channel Wave Seismic Transmission-Reflection Detection Method

Guang

Wang

et al. 2022

Minerals

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“…However, few have tackled the influence of small structures, e.g., scouring zone, on the propagation features of the wave [4]. The propagation features of elastic waves are usually analyzed by the elastic wave equation and geological methods [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Propagation Features of Channel Wave Signal in Coal Seam with Scouring Zone

Sun¹,

Qi²,

Tian³

et al. 2021

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This paper mainly analyzes the typical geological structure of the coal seam with scouring zone, and examines the channel features of the coal seam. Firstly, a detailed analysis was conducted on the propagation features of channel wave in complex coal seam with geological anomalies. Based on COMSOL Multiphysics, a three-dimensional (3D) medium geometry model was established for complex coal seam with scouring zone. Relying on the model, channel wave propagation was simulated by finite-element method, and the propagation features were analyzed thoroughly. The Ricker wavelet with a central frequency of 200Hz was employed to emulate the explosive source, and the excited vibration signal was measured along the coal seam. Experimental results show that the longer the propagation distance of the channel wave signal in the coal seam, the more stretched the channel wave train, and the later the arrival of the maximum envelope of the wave train. The maximum envelope of the wave train appeared earlier in the model with the scouring zone than in the model without the scouring zone. After the channel wave passed through the scouring zone, the maximum envelope of the wave train appeared later in the model with the scouring zone than in the model without the scouring zone.

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Dispersion features of transmitted channel waves and inversion of coal seam thickness

Zhang

2018

Acta Geophys.

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Dispersion Characteristics of SH Transmitted Channel Waves and Comparative Study of Dispersion Analysis Methods

Cited by 6 publications

References 0 publications

Quantitative Evaluation of Faults by Combined Channel Wave Seismic Transmission-Reflection Detection Method

Quantitative Evaluation of Faults by Combined Channel Wave Seismic Transmission-Reflection Detection Method

Propagation Features of Channel Wave Signal in Coal Seam with Scouring Zone

Dispersion features of transmitted channel waves and inversion of coal seam thickness

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