Model Test on Segmental Grouting Diffusion Process in Muddy Fault of Tunnel Engineering
Joint Authors
Zhang, Qingsong
Peng, Fang
Li, Zhipeng
Zhang, Lianzhen
Weng, Xianjie
Liu, Jun
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-12-21
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
In order to realize the diffusion law of segmental grouting in muddy fault of tunnel engineering, a three-dimensional grouting diffusion simulation test has been done.
Three times of grouting operation have been done for three adjacent sections in grouting pipe.
Grouting pressure, injection rate, soil pressure field, and seepage pressure field have been real-time monitored in three grouting stages.
The effect of segmental grouting operation on soil pressure field and effective stress field has been analyzed.
Results show that previous grouting operation can affect later grouting operation.
Due to previous grouting operation, the grouted stratum can be compacted and grouting diffusion will conquer greater resistance in later grouting stages.
Correspondingly, grouting pressure increases and injection rate decreases in the later grouting stage.
There exists a limited influence range for a single grouting operation.
For every grouting stage, soil pressure and effective stress in the section which the injection hole locates in are affected effectively by grouting operation.
By contrast, soil pressure and effective stress in section away from injection hole are affected relatively weakly by grouting operation.
With distance to injection hole increasing, compaction degree and reinforcement effect of grouted muddy fault decay in space.
Multisegmental grouting method has significant advantages over single grouting method.
Ineffectively compacted area by previous grouting operation can be effectively compacted by later grouting operation from adjacent injection hole.
As a result, uniformity of grouting reinforcement effect can be improved, and weakly reinforcement area can be reduced.
American Psychological Association (APA)
Liu, Jun& Zhang, Qingsong& Zhang, Lianzhen& Peng, Fang& Li, Zhipeng& Weng, Xianjie. 2020. Model Test on Segmental Grouting Diffusion Process in Muddy Fault of Tunnel Engineering. Geofluids،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1165127
Modern Language Association (MLA)
Liu, Jun…[et al.]. Model Test on Segmental Grouting Diffusion Process in Muddy Fault of Tunnel Engineering. Geofluids No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1165127
American Medical Association (AMA)
Liu, Jun& Zhang, Qingsong& Zhang, Lianzhen& Peng, Fang& Li, Zhipeng& Weng, Xianjie. Model Test on Segmental Grouting Diffusion Process in Muddy Fault of Tunnel Engineering. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1165127
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1165127