公开(公告)号：US20240125960A1

公开(公告)日：2024-04-18

申请号：US18380751

申请日：2023-10-17

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

Inventor： Woohyun Son ,  Yunseok Choi ,  Seong Hyung Jang ,  Donghoon Lee

IPC: G01V1/32 ,  G01V1/28 ,  G01V1/30

CPC classification number: G01V1/32 ,  G01V1/282 ,  G01V1/303 ,  G01V2210/42

Abstract: An object of the present invention is to provide a system and a method for evaluating an urban ground stability using traffic noise, which derive a physical property (S wave velocity) according to a depth by performing an inversion for a surface wave dispersion curve generated by traffic vibration in order to more accurately derive an underground physical property value (S wave velocity).
In order to achieve the object, a system for evaluating an urban ground stability using traffic noise according to the present invention includes: a signal measurement unit measuring a passive elastic wave signal generated by the traffic noise, and acquiring an elastic wave signal containing refracted waves using an artificial transmission source in an exploration area; and a server performing an inversion by applying a surface wave dispersion curve inversion technique to a frequency-phase velocity dispersion curve according to the passive elastic wave signal or the elastic wave signal containing the refracted wave.

公开(公告)号：US10451756B2

公开(公告)日：2019-10-22

申请号：US15715973

申请日：2017-09-26

Applicant: Korea Institute Of Geoscience And Mineral Resources

Inventor： Woohyun Son ,  Sukjoon Pyun ,  Ho-Young Lee ,  Nam-Hyung Koo ,  Changsoo Shin

IPC: G01V1/30 ,  G06F17/50

Abstract: The present invention relates generally to an apparatus and method for calculating efficient 3-dimensional (3D) traveltime by using coarse-grid mesh for a shallow depth source. More particularly, the present invention relates to an efficient 3D traveltime calculation method for a shallow depth source by combining a suppressed wave equation estimation of traveltime (SWEET) algorithm and an equivalent source distribution (ESD) algorithm, wherein the SWEET algorithm is a traveltime calculation algorithm using an damped wave equation and the ESD algorithm is for equivalently distributed sources; and to an apparatus and method for calculating efficient 3D traveltime by using coarse-grid mesh for a shallow depth source which may need less calculation time compared with that of a conventional SWEET algorithm.

公开(公告)号：US20180246240A1

公开(公告)日：2018-08-30

申请号：US15715973

申请日：2017-09-26

Applicant: Korea Institute Of Geoscience And Mineral Resources

Inventor： Woohyun Son ,  Sukjoon Pyun ,  Ho-Young Lee ,  Nam-Hyung Koo ,  Changsoo Shin

IPC: G01V1/30 ,  G01V1/50 ,  G06F17/16

Abstract: The present invention relates generally to an apparatus and method for calculating efficient 3-dimensional (3D) traveltime by using coarse-grid mesh for a shallow depth source. More particularly, the present invention relates to an efficient 3D traveltime calculation method for a shallow depth source by combining a suppressed wave equation estimation of traveltime (SWEET) algorithm and an equivalent source distribution (ESD) algorithm, wherein the SWEET algorithm is a traveltime calculation algorithm using an damped wave equation and the ESD algorithm is for equivalently distributed sources; and to an apparatus and method for calculating efficient 3D traveltime by using coarse-grid mesh for a shallow depth source which may need less calculation time compared with that of a conventional SWEET algorithm.