Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM Cutter
To explore the influences of microwave irradiation on the rock-breaking efficiency of tunnel boring machine (TBM) cutters, a multimode cavity with a microwave power of 2100 W was used to conduct microwave irradiation tests on Chifeng basalt for different durations. A combined abrasion test device fo...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/8/4713 |
| _version_ | 1827746102549413888 |
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| author | Gaoming Lu Cong Ding Jianjun Zhou Haining Liu Chaoyin Liu |
| author_facet | Gaoming Lu Cong Ding Jianjun Zhou Haining Liu Chaoyin Liu |
| author_sort | Gaoming Lu |
| collection | DOAJ |
| description | To explore the influences of microwave irradiation on the rock-breaking efficiency of tunnel boring machine (TBM) cutters, a multimode cavity with a microwave power of 2100 W was used to conduct microwave irradiation tests on Chifeng basalt for different durations. A combined abrasion test device for the reduced-scale SP3-I TBM cutter was adopted to conduct cutter wear and rock-breaking tests on basalt samples before and after microwave irradiation. Influences of microwave irradiation on the wear loss of the reduced-scale TBM cutter, rock removal, cutting force, and specific energy were investigated. The results show that the wear loss of the reduced-scale TBM cutter linearly reduces while the rock removal linearly increases with increasing exposure to microwave irradiation. When the penetration depth and the cutter spacing are fixed, the cutting force and the work done by the cutting force exerted by the reduced-scale TBM cutter decrease linearly with increasing exposure to microwave irradiation. The rock-breaking specific energy decreases with increasing exposure to microwave irradiation in an exponential manner. These results indicate that microwave irradiation can prolong the service life of the TBM cutter in the rock-breaking process, reduce the required thrust and torque of the cutter, and improve the rock-breaking efficiency of the TBM. |
| first_indexed | 2024-03-11T05:16:47Z |
| format | Article |
| id | doaj.art-410af7505dad4ac684b4c4ff411ca177 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T05:16:47Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-410af7505dad4ac684b4c4ff411ca1772023-11-17T18:08:08ZengMDPI AGApplied Sciences2076-34172023-04-01138471310.3390/app13084713Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM CutterGaoming Lu0Cong Ding1Jianjun Zhou2Haining Liu3Chaoyin Liu4State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, ChinaCollege of Earth Resource Sciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, ChinaState Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, ChinaCollege of Earth Resource Sciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, ChinaState Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, ChinaTo explore the influences of microwave irradiation on the rock-breaking efficiency of tunnel boring machine (TBM) cutters, a multimode cavity with a microwave power of 2100 W was used to conduct microwave irradiation tests on Chifeng basalt for different durations. A combined abrasion test device for the reduced-scale SP3-I TBM cutter was adopted to conduct cutter wear and rock-breaking tests on basalt samples before and after microwave irradiation. Influences of microwave irradiation on the wear loss of the reduced-scale TBM cutter, rock removal, cutting force, and specific energy were investigated. The results show that the wear loss of the reduced-scale TBM cutter linearly reduces while the rock removal linearly increases with increasing exposure to microwave irradiation. When the penetration depth and the cutter spacing are fixed, the cutting force and the work done by the cutting force exerted by the reduced-scale TBM cutter decrease linearly with increasing exposure to microwave irradiation. The rock-breaking specific energy decreases with increasing exposure to microwave irradiation in an exponential manner. These results indicate that microwave irradiation can prolong the service life of the TBM cutter in the rock-breaking process, reduce the required thrust and torque of the cutter, and improve the rock-breaking efficiency of the TBM.https://www.mdpi.com/2076-3417/13/8/4713microwave irradiationTBMreduced-scale TBM cutterspecific energy consumptionrock-breaking efficiency |
| spellingShingle | Gaoming Lu Cong Ding Jianjun Zhou Haining Liu Chaoyin Liu Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM Cutter Applied Sciences microwave irradiation TBM reduced-scale TBM cutter specific energy consumption rock-breaking efficiency |
| title | Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM Cutter |
| title_full | Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM Cutter |
| title_fullStr | Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM Cutter |
| title_full_unstemmed | Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM Cutter |
| title_short | Influences of Microwave Irradiation on Rock-Breaking Efficiency of a Reduced-Scale TBM Cutter |
| title_sort | influences of microwave irradiation on rock breaking efficiency of a reduced scale tbm cutter |
| topic | microwave irradiation TBM reduced-scale TBM cutter specific energy consumption rock-breaking efficiency |
| url | https://www.mdpi.com/2076-3417/13/8/4713 |
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