Grouting Mechanism of Cement-Based Slurry in a Concentric Annulus under High Groundwater Pressure
Joint Authors
Zhang, Weijie
Han, Chenghao
Zhang, Lianzhen
Wei, Jiuchuan
Yin, Huiyong
Han, Weiwei
Xie, Chao
Zhou, Wenwu
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-09-19
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
The flow of cement-based slurry within concentric annular geometry is a major problem of study in the field of engineering, especially regarding the prevention of water ingress in an annulus formed during shaft construction utilizing the artificial freezing technique in China.
In this study, an analytical governing equation of motion for the axial flow of an incompressible Newtonian fluid in a long concentric annulus is derived under the condition of high groundwater pressure.
A stepwise calculation method is proposed to describe the grouting process based on two injection modes, namely, flow rate control and pressure control.
The injection time is divided into a series of time segments; correspondingly, the grouted zone is subdivided into infinitesimal elements.
Some key parameters, such as the location, dimension, slurry viscosity, and pressure gradient of each element, can be obtained using the developed MATLAB program.
On this basis, the distribution of pressure and slurry viscosity in the grouted zone and the variations in injection pressure at the grouting point and grouting flow rate are determined.
Two injection mode cases are investigated to reveal the grout propagation in the concentric annulus.
Finally, numerical simulations are conducted and employed to validate and calibrate the calculated results.
The results obtained by the present stepwise calculation method show good agreement with the numerical results.
American Psychological Association (APA)
Zhang, Weijie& Han, Chenghao& Zhang, Lianzhen& Wei, Jiuchuan& Yin, Huiyong& Han, Weiwei…[et al.]. 2019. Grouting Mechanism of Cement-Based Slurry in a Concentric Annulus under High Groundwater Pressure. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1115830
Modern Language Association (MLA)
Zhang, Weijie…[et al.]. Grouting Mechanism of Cement-Based Slurry in a Concentric Annulus under High Groundwater Pressure. Advances in Civil Engineering No. 2019 (2019), pp.1-15.
https://search.emarefa.net/detail/BIM-1115830
American Medical Association (AMA)
Zhang, Weijie& Han, Chenghao& Zhang, Lianzhen& Wei, Jiuchuan& Yin, Huiyong& Han, Weiwei…[et al.]. Grouting Mechanism of Cement-Based Slurry in a Concentric Annulus under High Groundwater Pressure. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1115830
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115830