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

Advances in Civil Engineering

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

Civil Engineering

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