Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions
This paper focuses on studying the correlations of the performance of hard rock tunnel boring machines (TBMs) with operational and rock conditions. Firstly, a rigid-flexible coupled multibody dynamic model of an opening hard rock TBM is established for the analysis of its vibration. Then four perfor...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/8798232 |
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| _version_ | 1832552459542724608 |
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| author | Xiaoyang Zou Hui Zheng Yongzhen Mi |
| author_facet | Xiaoyang Zou Hui Zheng Yongzhen Mi |
| author_sort | Xiaoyang Zou |
| collection | DOAJ |
| description | This paper focuses on studying the correlations of the performance of hard rock tunnel boring machines (TBMs) with operational and rock conditions. Firstly, a rigid-flexible coupled multibody dynamic model of an opening hard rock TBM is established for the analysis of its vibration. Then four performance indexes including mean vibration energy dissipation rate, dynamic specific energy (DSE), disc cutter wear rate, and load sharing coefficient are introduced and formulated, respectively, for evaluating the vibration level, excavation energy efficiency, cutter’s vulnerability to wear, and load transmission performance of cutterhead driving system of the TBM. Finally, numerical simulation results of the TBM tunneling performance evaluation are obtained and validated by on-site vibration measurement and tunneling data collection. It is found that operational and rock conditions exert important impact on TBM vibration level, excavation energy efficiency, and structure damage. When the type of rock to be cut changes from soft to hard with operational parameters held constant, TBM performance evaluated by these three indexes deteriorates significantly, and both the decrease of excavation energy efficiency and the increase of cutter wear rate caused by TBM vibration are obvious. This study provides the foundation for a more comprehensive evaluation of TBM performance in actual tunneling process. |
| format | Article |
| id | doaj-art-c88dae90718e426db738d7b988fdffc5 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-c88dae90718e426db738d7b988fdffc52025-02-03T05:58:38ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/87982328798232Performance Evaluation of Hard Rock TBMs considering Operational and Rock ConditionsXiaoyang Zou0Hui Zheng1Yongzhen Mi2Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, ChinaShanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, ChinaInstitute of Vibration, Shock and Noise, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, ChinaThis paper focuses on studying the correlations of the performance of hard rock tunnel boring machines (TBMs) with operational and rock conditions. Firstly, a rigid-flexible coupled multibody dynamic model of an opening hard rock TBM is established for the analysis of its vibration. Then four performance indexes including mean vibration energy dissipation rate, dynamic specific energy (DSE), disc cutter wear rate, and load sharing coefficient are introduced and formulated, respectively, for evaluating the vibration level, excavation energy efficiency, cutter’s vulnerability to wear, and load transmission performance of cutterhead driving system of the TBM. Finally, numerical simulation results of the TBM tunneling performance evaluation are obtained and validated by on-site vibration measurement and tunneling data collection. It is found that operational and rock conditions exert important impact on TBM vibration level, excavation energy efficiency, and structure damage. When the type of rock to be cut changes from soft to hard with operational parameters held constant, TBM performance evaluated by these three indexes deteriorates significantly, and both the decrease of excavation energy efficiency and the increase of cutter wear rate caused by TBM vibration are obvious. This study provides the foundation for a more comprehensive evaluation of TBM performance in actual tunneling process.http://dx.doi.org/10.1155/2018/8798232 |
| spellingShingle | Xiaoyang Zou Hui Zheng Yongzhen Mi Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions Shock and Vibration |
| title | Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions |
| title_full | Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions |
| title_fullStr | Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions |
| title_full_unstemmed | Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions |
| title_short | Performance Evaluation of Hard Rock TBMs considering Operational and Rock Conditions |
| title_sort | performance evaluation of hard rock tbms considering operational and rock conditions |
| url | http://dx.doi.org/10.1155/2018/8798232 |
| work_keys_str_mv | AT xiaoyangzou performanceevaluationofhardrocktbmsconsideringoperationalandrockconditions AT huizheng performanceevaluationofhardrocktbmsconsideringoperationalandrockconditions AT yongzhenmi performanceevaluationofhardrocktbmsconsideringoperationalandrockconditions |