Method of Calculating the Compensation for Rectifying the Horizontal Displacement of Existing Tunnels by Grouting
Sleeve valve pipe grouting, an effective method for reinforcing soil layers, is often employed to correct the deformation of subway tunnels. In order to study the effect of grouting on rectifying the displacement of existing tunnels, this paper proposes a mechanical model of the volume expansion of...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/1/40 |
| _version_ | 1797543776654196736 |
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| author | Yongjie Qi Gang Wei Feifan Feng Jiaxuan Zhu |
| author_facet | Yongjie Qi Gang Wei Feifan Feng Jiaxuan Zhu |
| author_sort | Yongjie Qi |
| collection | DOAJ |
| description | Sleeve valve pipe grouting, an effective method for reinforcing soil layers, is often employed to correct the deformation of subway tunnels. In order to study the effect of grouting on rectifying the displacement of existing tunnels, this paper proposes a mechanical model of the volume expansion of sleeve valve pipe grouting taking into consideration the volume expansion of the grouted soil mass. A formula for the additional stress on the soil layer caused by grouting was derived based on the principle of the mirror method. In addition, a formula for the horizontal displacement of a tunnel caused by grouting was developed through a calculation model of shearing dislocation and rigid body rotation. The results of the calculation method proposed herein were in good agreement with actual engineering data. In summary, enlarging the grouting volume within a reasonable range can effectively enhance the grouting corrective effect. Further, with an increase in the grouting distance, the influence of grouting gradually lessens. At a constant grouting length, setting the bottom of the grouting section at the same depth as the lower end of the tunnel can maximize the grouting corrective effect. |
| first_indexed | 2024-03-10T13:50:28Z |
| format | Article |
| id | doaj.art-8428301280c846fda3267f821626eee5 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T13:50:28Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-8428301280c846fda3267f821626eee52023-11-21T02:09:58ZengMDPI AGApplied Sciences2076-34172020-12-011114010.3390/app11010040Method of Calculating the Compensation for Rectifying the Horizontal Displacement of Existing Tunnels by GroutingYongjie Qi0Gang Wei1Feifan Feng2Jiaxuan Zhu3Department of Civil Engineering, Zhejiang University City College, Hangzhou 310015, ChinaDepartment of Civil Engineering, Zhejiang University City College, Hangzhou 310015, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, ChinaDepartment of Civil Engineering, Zhejiang University City College, Hangzhou 310015, ChinaSleeve valve pipe grouting, an effective method for reinforcing soil layers, is often employed to correct the deformation of subway tunnels. In order to study the effect of grouting on rectifying the displacement of existing tunnels, this paper proposes a mechanical model of the volume expansion of sleeve valve pipe grouting taking into consideration the volume expansion of the grouted soil mass. A formula for the additional stress on the soil layer caused by grouting was derived based on the principle of the mirror method. In addition, a formula for the horizontal displacement of a tunnel caused by grouting was developed through a calculation model of shearing dislocation and rigid body rotation. The results of the calculation method proposed herein were in good agreement with actual engineering data. In summary, enlarging the grouting volume within a reasonable range can effectively enhance the grouting corrective effect. Further, with an increase in the grouting distance, the influence of grouting gradually lessens. At a constant grouting length, setting the bottom of the grouting section at the same depth as the lower end of the tunnel can maximize the grouting corrective effect.https://www.mdpi.com/2076-3417/11/1/40compensation groutingsubway tunneldisplacement rectificationhorizontal displacementcorrection control |
| spellingShingle | Yongjie Qi Gang Wei Feifan Feng Jiaxuan Zhu Method of Calculating the Compensation for Rectifying the Horizontal Displacement of Existing Tunnels by Grouting Applied Sciences compensation grouting subway tunnel displacement rectification horizontal displacement correction control |
| title | Method of Calculating the Compensation for Rectifying the Horizontal Displacement of Existing Tunnels by Grouting |
| title_full | Method of Calculating the Compensation for Rectifying the Horizontal Displacement of Existing Tunnels by Grouting |
| title_fullStr | Method of Calculating the Compensation for Rectifying the Horizontal Displacement of Existing Tunnels by Grouting |
| title_full_unstemmed | Method of Calculating the Compensation for Rectifying the Horizontal Displacement of Existing Tunnels by Grouting |
| title_short | Method of Calculating the Compensation for Rectifying the Horizontal Displacement of Existing Tunnels by Grouting |
| title_sort | method of calculating the compensation for rectifying the horizontal displacement of existing tunnels by grouting |
| topic | compensation grouting subway tunnel displacement rectification horizontal displacement correction control |
| url | https://www.mdpi.com/2076-3417/11/1/40 |
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