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Application of the SASW Method to the Evaluation of Grouting Performance for a Soft Ground of a Tunnel  

조미라 (미국 유타주립대학교 토목공학과)
강태호 (중앙대학교 토목공학과)
Publication Information
Journal of the Korean Geotechnical Society / v.19, no.6, 2003 , pp. 273-283 More about this Journal
Abstract
Fissured rock and soft ground always suggest, problems in the construction of the underground space. The stress release of the weak underground material by opening the underground space with a soft ground, fissures and joints can lead to the failure of the opening. Grouting of the weak rock and the soft ground, which is a process of injecting some bonding agents into the soft ground, is one of the measures to reinforce the soft ground and to prohibit the failure of the underground construction due to the stress release. The proper installation of the grouting is essential to ensuring the safety of the tunneling operation, so that the evaluation of the grouting performance is very significant. The general procedure of evaluating the grouting is coring the grouted section and measuring the compression strength of the core. However, sometimes when the grouted section is at the crown of the tunnel and the grouting is installed at a wide section, the coring is not good enough. This study is oriented to propose a new and a non-destructive procedure of evaluating the grouting performance. The proposed method is based on the wave propagation of elastic waves, and evaluates the shear stiffness of the ground and investigates the anomalies such as voids and cracks. The SASW ( Spectral-Analysis-of-Surface-Waves) method is one of the candidate s to make the inspection of the pouting performance, and is adopted in this study. The practical grouting activity was monitored by SASW method, and the proposed method was applied to the inspection of the grouting performance to check the verification of the proposed method.
Keywords
Evaluation of grouting performance; Grouting; SASW method; Seismic measurements; Tunnel;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 A Technique for the Analysis of Transient Seismic Signals /
[ Dziewonski,A.M.;Bloch,S.;Landisman,M. ] / Bull. Seismol. Soc. Am.
2 Field Measurement of Seismi Wave Velocity and Attenuation /
[ Hoar,R.J. ] / Ph.D. Dissertation, The University of Texas at Austin
3 /
[ Joh,S.H. ] / SASW Analyzer: Program to Analyze the SASW Measurements by IRF and Gabor Spectrum, to Develop and Experimental Dispersion Curve, and to Construct Representative Global and Array Dispersion Curves
4 Impulse response filtration technique for the determination of phase velocities from SASW measurements /
[ Joh,S.H.;Stokoe,K.H.,II ] / 한국지반공학회지   과학기술학회마을
5 Advances in data interpretation technique for Spectral-Analysis-of-Surface-Waves(SASW) measurements /
[ Joh,S.H. ] / Ph.D. Dissertation, the University of Texas at Austin
6 Field Measurement of Dynamic Soil Properties /
[ Stokoe,K.H.,II ] / The Speciality Conference on Civil Engineering and Nuclear Power
7 터널 국부정밀 안전진단을 위한 탄성파 기법의 적용성에 관한 연구 /
[ 조성호;배규진;나경준;이성원;오상덕 ] / '98 지반공학회 가을학술발표회 논문집
8 Determination of in situ shear wave velocities from Spectral-Analysis-of-Surface-Waves /
[ Heisey,J.S.;Stokoe,K.H.II;Hudson,W.R.;Meyer,A.H. ] / Research Report No.256-2 Center for Transportation Research
9 /
[ Joh,S.H. ] / FitSASW: Program for Forward Modeling Analysis, Inversion Analysis and Time Trace Generation