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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.75 No.5
- 발행연도
- 2020.1
- 수록면
- 571 - 583 (13page)
이용수
초록· 키워드
오류제보하기
Permeation grouting is of great significance for consolidating geo-materials without disturbing the original geo-structure. To dip into the filtration-induced pressure increment that dominates the grout penetration in permeation grouting, nonlinear filtration coefficients embedded in a convection-filtration model were proposed, in which the volume of cement particles in grout and the deposited particles of skeleton were considered. An experiment was designed to determine the filtration coefficients and verify the model. The filtration coefficients deduced from experimental data were used in simulation, and the modelling results matched well with the experimental ones. The pressure drop revealed in experiments and captured in modelling demonstrated that the surge of inflow pressure lagged behind the stoppage of flow channels. In addition, both the consideration of the particles loss in liquid grout and the number of filtrated particles on pore walls presented an ideal trend in filtration rate, in which the filtration rate first rose rapidly and then reached to a steady plateau. Finally, this observed pressure drop was extended to the grouting design which alters the water to cement (W/C) ratio so as to alleviate the filtration effect. This study offers a novel insight into the filtration behaviour and has a practical meaning to extend penetration distance.
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참고문헌 (71)
참고문헌 신청
Axelsson, M. / 2009 / Stop mechanism for cementitious grouts at different water-to-cement ratios / Tunn Undergr Sp Tech 24(4):390~397
Bohloli, B. / 2018 / Strength and filtration stability of cement grouts at room and true tunnelling temperatures / Tunn Undergr Sp Tech 71:193~200
Bouchelaghem, F. / 2009 / Multi-scale modelling of the permeability evolution of fine sands during cement suspension grouting with filtration / Comput Geotech 36(6):1058~1071
Bouchelaghem, F. / 2003 / Experimental determination of the longitudinal dispersivity during the injection of a micro-cement grout in a one-dimensional soil column / Transport Porous Med 52(1):67~94
Bouchelaghem, F. / 2001 / Real-scale miscible grout injection experiment and performance of advection-dispersion-filtration model / Int J Numer Anal Met 25(12):1149~1173
Bohloli, B. / 2018 / Strength and filtration stability of cement grouts at room and true tunnelling temperatures / Tunn Undergr Sp Tech 71:193~200
Bouchelaghem, F. / 2009 / Multi-scale modelling of the permeability evolution of fine sands during cement suspension grouting with filtration / Comput Geotech 36(6):1058~1071
Bouchelaghem, F. / 2003 / Experimental determination of the longitudinal dispersivity during the injection of a micro-cement grout in a one-dimensional soil column / Transport Porous Med 52(1):67~94
Bouchelaghem, F. / 2001 / Real-scale miscible grout injection experiment and performance of advection-dispersion-filtration model / Int J Numer Anal Met 25(12):1149~1173
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