Research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressure
Choosing the reasonable and economical grouting parameters is crucial for controlling the seepage field of surrounding rock and tunnel stability. This paper adopted the fluid–solid coupling theory based on FLAC3D to establish numerous simulations on the stability of surrounding rock and lining struc...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2025-01-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0226365 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832542722425094144 |
|---|---|
| author | Lianhui Li Zonglong Zhang Changyong Nie Xuebing Hu Zongzhi Li Liang Cheng Wenfeng Zhang |
| author_facet | Lianhui Li Zonglong Zhang Changyong Nie Xuebing Hu Zongzhi Li Liang Cheng Wenfeng Zhang |
| author_sort | Lianhui Li |
| collection | DOAJ |
| description | Choosing the reasonable and economical grouting parameters is crucial for controlling the seepage field of surrounding rock and tunnel stability. This paper adopted the fluid–solid coupling theory based on FLAC3D to establish numerous simulations on the stability of surrounding rock and lining structure in karst tunnels under the different grouting conditions. The influences of grouting layer thicknesses and their permeability coefficients on the mechanical behaviors of lining structure, seepage, and stress properties of surrounding rock were investigated. The results show that with the increase of grouting thickness and its ratio of permeability, the maximum flow velocity and flow rate per liner meter in surrounding rock, the bending moments and axial forces, and the horizontal and vertical displacements of the lining structure all exponentially decrease, but safety factors at different positions of the lining structure first rapidly and then slowly increase. The changes in safety factor and uplift displacement at the inverted arch are more significant, and the minimum safety factor occurs at the left arch foot. As the grouting thickness and its ratio of permeability increase, the plastic zone range in surrounding rock decreases and expands, respectively. Through considering the improvement effect and economy of grouting comprehensively, choosing a grouting layer thickness of 7–9 m and a ratio of permeability of 20–50 is an ideal configuration parameter to ensure the stability and safety of karst tunnels under the conditions of this paper. The research results could provide references for choosing the reasonable grouting parameters in karst tunnels. |
| format | Article |
| id | doaj-art-70900a2b357a40adbc0fbcf4788b328f |
| institution | Kabale University |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-70900a2b357a40adbc0fbcf4788b328f2025-02-03T16:40:43ZengAIP Publishing LLCAIP Advances2158-32262025-01-01151015314015314-1610.1063/5.0226365Research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressureLianhui Li0Zonglong Zhang1Changyong Nie2Xuebing Hu3Zongzhi Li4Liang Cheng5Wenfeng Zhang6Chongqing Yuxiang Double-line Expressway Co. Ltd., Chongqing 408500, ChinaChina Merchants Chongqing Communications Technology Research and Design Institute Co., Ltd., Chongqing 400067, ChinaChongqing Yuxiang Double-line Expressway Co. Ltd., Chongqing 408500, ChinaChina Merchants Chongqing Communications Technology Research and Design Institute Co., Ltd., Chongqing 400067, ChinaChina Railway 12th Bureau Group Co., Ltd., Taiyuan 03024, ChinaChina Merchants Chongqing Communications Technology Research and Design Institute Co., Ltd., Chongqing 400067, ChinaChongqing Expressway Group Co., Ltd, Chongqing 401120, ChinaChoosing the reasonable and economical grouting parameters is crucial for controlling the seepage field of surrounding rock and tunnel stability. This paper adopted the fluid–solid coupling theory based on FLAC3D to establish numerous simulations on the stability of surrounding rock and lining structure in karst tunnels under the different grouting conditions. The influences of grouting layer thicknesses and their permeability coefficients on the mechanical behaviors of lining structure, seepage, and stress properties of surrounding rock were investigated. The results show that with the increase of grouting thickness and its ratio of permeability, the maximum flow velocity and flow rate per liner meter in surrounding rock, the bending moments and axial forces, and the horizontal and vertical displacements of the lining structure all exponentially decrease, but safety factors at different positions of the lining structure first rapidly and then slowly increase. The changes in safety factor and uplift displacement at the inverted arch are more significant, and the minimum safety factor occurs at the left arch foot. As the grouting thickness and its ratio of permeability increase, the plastic zone range in surrounding rock decreases and expands, respectively. Through considering the improvement effect and economy of grouting comprehensively, choosing a grouting layer thickness of 7–9 m and a ratio of permeability of 20–50 is an ideal configuration parameter to ensure the stability and safety of karst tunnels under the conditions of this paper. The research results could provide references for choosing the reasonable grouting parameters in karst tunnels.http://dx.doi.org/10.1063/5.0226365 |
| spellingShingle | Lianhui Li Zonglong Zhang Changyong Nie Xuebing Hu Zongzhi Li Liang Cheng Wenfeng Zhang Research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressure AIP Advances |
| title | Research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressure |
| title_full | Research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressure |
| title_fullStr | Research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressure |
| title_full_unstemmed | Research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressure |
| title_short | Research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressure |
| title_sort | research on the influence of curtain grouting parameters on the stability of tunnel surrounding rock and lining structure under the action of local high water pressure |
| url | http://dx.doi.org/10.1063/5.0226365 |
| work_keys_str_mv | AT lianhuili researchontheinfluenceofcurtaingroutingparametersonthestabilityoftunnelsurroundingrockandliningstructureundertheactionoflocalhighwaterpressure AT zonglongzhang researchontheinfluenceofcurtaingroutingparametersonthestabilityoftunnelsurroundingrockandliningstructureundertheactionoflocalhighwaterpressure AT changyongnie researchontheinfluenceofcurtaingroutingparametersonthestabilityoftunnelsurroundingrockandliningstructureundertheactionoflocalhighwaterpressure AT xuebinghu researchontheinfluenceofcurtaingroutingparametersonthestabilityoftunnelsurroundingrockandliningstructureundertheactionoflocalhighwaterpressure AT zongzhili researchontheinfluenceofcurtaingroutingparametersonthestabilityoftunnelsurroundingrockandliningstructureundertheactionoflocalhighwaterpressure AT liangcheng researchontheinfluenceofcurtaingroutingparametersonthestabilityoftunnelsurroundingrockandliningstructureundertheactionoflocalhighwaterpressure AT wenfengzhang researchontheinfluenceofcurtaingroutingparametersonthestabilityoftunnelsurroundingrockandliningstructureundertheactionoflocalhighwaterpressure |