Experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure
To study the effectiveness of filled cracks as a means of anti-blasting and wave-elimination for underground protective structures, 36 one-dimensional impact tests were carried out on the intact rock specimens and rock specimens with filled cracks using the SHPB apparatus. The transmittance, stress...
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| Format: | Article |
| Language: | English |
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SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717
2021-08-01
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| Series: | Rock and Soil Mechanics |
| Subjects: | |
| Online Access: | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.5076 |
| _version_ | 1798038646774824960 |
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| author | LIU Xin XU Hong-fa FAN Peng-xian GENG Han-sheng MO Jia-quan WANG De-rong |
| author_facet | LIU Xin XU Hong-fa FAN Peng-xian GENG Han-sheng MO Jia-quan WANG De-rong |
| author_sort | LIU Xin |
| collection | DOAJ |
| description | To study the effectiveness of filled cracks as a means of anti-blasting and wave-elimination for underground protective structures, 36 one-dimensional impact tests were carried out on the intact rock specimens and rock specimens with filled cracks using the SHPB apparatus. The transmittance, stress wave velocity and peak stress value of the specimen under different working conditions were obtained. The impacts of confining pressure level, filling thickness and filling material types on stress wave attenuation were analyzed. The results show that, with the increase of the thickness of the filled cracks, the transmittance of the specimen, stress wave velocity, and stress wave peak stress attenuate clearly. The greater the thickness of the filled crack, the smaller the transmission energy of the stress wave during the propagation process. With the increase of confining pressure, the wave- eliminating effect of filled cracks is reduced due to the closure of pores, but still demonstrate stress wave attenuation effect to some extent. Therefore, using particles with higher compressive strength as crack-filling material and increasing filling thickness can effectively improve the wave-eliminating effect in engineering protection. |
| first_indexed | 2024-04-11T21:42:48Z |
| format | Article |
| id | doaj.art-30a1e25cac22473e887eb3d6906c9f58 |
| institution | Directory Open Access Journal |
| issn | 1000-7598 |
| language | English |
| last_indexed | 2024-04-11T21:42:48Z |
| publishDate | 2021-08-01 |
| publisher | SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717 |
| record_format | Article |
| series | Rock and Soil Mechanics |
| spelling | doaj.art-30a1e25cac22473e887eb3d6906c9f582022-12-22T04:01:31ZengSCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717Rock and Soil Mechanics1000-75982021-08-014282099210810.16285/j.rsm.2021.5076Experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure LIU Xin 0XU Hong-fa1FAN Peng-xian2GENG Han-sheng3MO Jia-quan4WANG De-rong5State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing, Jiangsu 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing, Jiangsu 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing, Jiangsu 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing, Jiangsu 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing, Jiangsu 210007, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing, Jiangsu 210007, ChinaTo study the effectiveness of filled cracks as a means of anti-blasting and wave-elimination for underground protective structures, 36 one-dimensional impact tests were carried out on the intact rock specimens and rock specimens with filled cracks using the SHPB apparatus. The transmittance, stress wave velocity and peak stress value of the specimen under different working conditions were obtained. The impacts of confining pressure level, filling thickness and filling material types on stress wave attenuation were analyzed. The results show that, with the increase of the thickness of the filled cracks, the transmittance of the specimen, stress wave velocity, and stress wave peak stress attenuate clearly. The greater the thickness of the filled crack, the smaller the transmission energy of the stress wave during the propagation process. With the increase of confining pressure, the wave- eliminating effect of filled cracks is reduced due to the closure of pores, but still demonstrate stress wave attenuation effect to some extent. Therefore, using particles with higher compressive strength as crack-filling material and increasing filling thickness can effectively improve the wave-eliminating effect in engineering protection. http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.5076filled cracksconfining pressureshpbstress waveattenuation |
| spellingShingle | LIU Xin XU Hong-fa FAN Peng-xian GENG Han-sheng MO Jia-quan WANG De-rong Experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure Rock and Soil Mechanics filled cracks confining pressure shpb stress wave attenuation |
| title | Experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure |
| title_full | Experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure |
| title_fullStr | Experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure |
| title_full_unstemmed | Experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure |
| title_short | Experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure |
| title_sort | experimental study on the stress wave attenuation effect of filled cracks in rocks under confining pressure |
| topic | filled cracks confining pressure shpb stress wave attenuation |
| url | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.5076 |
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