Prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartzite
The pebble formation formed by weathered quartzite and granite is usually of high strength, strong permeability and poor self stability, which brings great difficulties to shield tunneling. It is necessary to adjust the tunneling parameters at any time to prevent the consequences of instability of t...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.1069924/full |
| _version_ | 1797950731327635456 |
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| author | Meiyan Wang Meiyan Wang Dajun Zhao Yan Lv Wei Wang Xing Wang |
| author_facet | Meiyan Wang Meiyan Wang Dajun Zhao Yan Lv Wei Wang Xing Wang |
| author_sort | Meiyan Wang |
| collection | DOAJ |
| description | The pebble formation formed by weathered quartzite and granite is usually of high strength, strong permeability and poor self stability, which brings great difficulties to shield tunneling. It is necessary to adjust the tunneling parameters at any time to prevent the consequences of instability of the tunnel face, loss of stratum and surface settlement caused by the imbalance of the soil bin pressure. GA algorithm is embedded into PSO algorithm for parameter optimization, and grey theory is combined to establish the prediction model of soil chamber pressure based on grey least square support vector machine, which can solve the problem of difficult control of tunneling parameters in pebble stratum formed by weathered quartzite and granite. Research indicates: GA-PSO-GLSSVM chamber Earth pressure prediction model enhances the EPB chamber Earth pressure forecast accuracy in complicated strata by integrating the global search capability of the GA algorithm, the quick convergence of the PSO algorithm, and the anti-disturbance capability of the GM model. The GA-PSO-GLSSVM model has high goodness-of-fit and accuracy compared with other prediction models. This model can successfully prevent the a series of undesirable consequences such as destabilization of the palm surface, missing strata and settlement due to ground surface due to pressure imbalance in the soil chamber pressure. The research results can provide reference for EPB shield tunneling parameter control in Grade V surrounding rock. |
| first_indexed | 2024-04-10T22:19:46Z |
| format | Article |
| id | doaj.art-60de5b937a0748e99a6408e4f2ebf301 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T22:19:46Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-60de5b937a0748e99a6408e4f2ebf3012023-01-18T04:30:48ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-01-011010.3389/feart.2022.10699241069924Prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartziteMeiyan Wang0Meiyan Wang1Dajun Zhao2Yan Lv3Wei Wang4Xing Wang5Country College of Construction Engineering, Jilin University, Changchun, ChinaDepartment of Civil Engineering, Shandong Vocational College of Science and Technology, Weifang, ChinaCountry College of Construction Engineering, Jilin University, Changchun, ChinaCountry College of Construction Engineering, Jilin University, Changchun, ChinaSchool of Civil Engineering, Changchun Institute of Technology, Changchun, ChinaSchool of Civil Engineering, Changchun Institute of Technology, Changchun, ChinaThe pebble formation formed by weathered quartzite and granite is usually of high strength, strong permeability and poor self stability, which brings great difficulties to shield tunneling. It is necessary to adjust the tunneling parameters at any time to prevent the consequences of instability of the tunnel face, loss of stratum and surface settlement caused by the imbalance of the soil bin pressure. GA algorithm is embedded into PSO algorithm for parameter optimization, and grey theory is combined to establish the prediction model of soil chamber pressure based on grey least square support vector machine, which can solve the problem of difficult control of tunneling parameters in pebble stratum formed by weathered quartzite and granite. Research indicates: GA-PSO-GLSSVM chamber Earth pressure prediction model enhances the EPB chamber Earth pressure forecast accuracy in complicated strata by integrating the global search capability of the GA algorithm, the quick convergence of the PSO algorithm, and the anti-disturbance capability of the GM model. The GA-PSO-GLSSVM model has high goodness-of-fit and accuracy compared with other prediction models. This model can successfully prevent the a series of undesirable consequences such as destabilization of the palm surface, missing strata and settlement due to ground surface due to pressure imbalance in the soil chamber pressure. The research results can provide reference for EPB shield tunneling parameter control in Grade V surrounding rock.https://www.frontiersin.org/articles/10.3389/feart.2022.1069924/fullsandy cobble stratumweathered quartzite and granitegrade V surrounding rockearth pressure balance shieldin chamber earth pressuregrey least square support vector machine |
| spellingShingle | Meiyan Wang Meiyan Wang Dajun Zhao Yan Lv Wei Wang Xing Wang Prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartzite Frontiers in Earth Science sandy cobble stratum weathered quartzite and granite grade V surrounding rock earth pressure balance shield in chamber earth pressure grey least square support vector machine |
| title | Prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartzite |
| title_full | Prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartzite |
| title_fullStr | Prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartzite |
| title_full_unstemmed | Prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartzite |
| title_short | Prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartzite |
| title_sort | prediction method of shield tunneling parameters in pebble stratum formed by weathered granite and quartzite |
| topic | sandy cobble stratum weathered quartzite and granite grade V surrounding rock earth pressure balance shield in chamber earth pressure grey least square support vector machine |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.1069924/full |
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