Study of Bearing Characteristics and Damage Law of Grouting-Reinforced Bodies
To explore solutions for reinforcement problems of broken rock masses in deep roadways, it is necessary to study the performance of cement-based grout and its reinforcement effect. In this study, grouting-reinforced specimens with different particle sizes of broken coal were made, which revealed the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/13/5/591 |
| _version_ | 1797598921903570944 |
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| author | Chuanwei Zang Liu Yang Miao Chen Yang Chen |
| author_facet | Chuanwei Zang Liu Yang Miao Chen Yang Chen |
| author_sort | Chuanwei Zang |
| collection | DOAJ |
| description | To explore solutions for reinforcement problems of broken rock masses in deep roadways, it is necessary to study the performance of cement-based grout and its reinforcement effect. In this study, grouting-reinforced specimens with different particle sizes of broken coal were made, which revealed the reinforcement effect of grouting on the bearing capacity of broken coal and the mechanism for secondary bearing damage and the instability of the reinforced specimens. First, it was determined that the appropriate water–cement ratio (W/C) to meet the field grouting conditions is 0.45. Second, the uniaxial compression of the grouting-reinforced specimens with 0.45 W/C was carried out, and acoustic emission equipment was used to detect it. Finally, through indoor experiments, this study investigated the differences in failure modes, stress–strain curves, and acoustic emission signal characteristics among intact coal samples, grouting-reinforced bodies with different particle sizes, and grouting-reinforced bodies after anchoring. The deformation and failure patterns of grouting-reinforced bodies were revealed, and the failure mechanisms of grouting-reinforced bodies with different particle sizes were elucidated. |
| first_indexed | 2024-03-11T03:28:27Z |
| format | Article |
| id | doaj.art-75328c92937a4e04a0fe9f7dad81cfa6 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-11T03:28:27Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-75328c92937a4e04a0fe9f7dad81cfa62023-11-18T02:35:45ZengMDPI AGMinerals2075-163X2023-04-0113559110.3390/min13050591Study of Bearing Characteristics and Damage Law of Grouting-Reinforced BodiesChuanwei Zang0Liu Yang1Miao Chen2Yang Chen3College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaThe Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Ministry of Education, Beijing 100124, ChinaTo explore solutions for reinforcement problems of broken rock masses in deep roadways, it is necessary to study the performance of cement-based grout and its reinforcement effect. In this study, grouting-reinforced specimens with different particle sizes of broken coal were made, which revealed the reinforcement effect of grouting on the bearing capacity of broken coal and the mechanism for secondary bearing damage and the instability of the reinforced specimens. First, it was determined that the appropriate water–cement ratio (W/C) to meet the field grouting conditions is 0.45. Second, the uniaxial compression of the grouting-reinforced specimens with 0.45 W/C was carried out, and acoustic emission equipment was used to detect it. Finally, through indoor experiments, this study investigated the differences in failure modes, stress–strain curves, and acoustic emission signal characteristics among intact coal samples, grouting-reinforced bodies with different particle sizes, and grouting-reinforced bodies after anchoring. The deformation and failure patterns of grouting-reinforced bodies were revealed, and the failure mechanisms of grouting-reinforced bodies with different particle sizes were elucidated.https://www.mdpi.com/2075-163X/13/5/591broken coalgroutingfailure mechanismacoustic emissionreinforced specimen |
| spellingShingle | Chuanwei Zang Liu Yang Miao Chen Yang Chen Study of Bearing Characteristics and Damage Law of Grouting-Reinforced Bodies Minerals broken coal grouting failure mechanism acoustic emission reinforced specimen |
| title | Study of Bearing Characteristics and Damage Law of Grouting-Reinforced Bodies |
| title_full | Study of Bearing Characteristics and Damage Law of Grouting-Reinforced Bodies |
| title_fullStr | Study of Bearing Characteristics and Damage Law of Grouting-Reinforced Bodies |
| title_full_unstemmed | Study of Bearing Characteristics and Damage Law of Grouting-Reinforced Bodies |
| title_short | Study of Bearing Characteristics and Damage Law of Grouting-Reinforced Bodies |
| title_sort | study of bearing characteristics and damage law of grouting reinforced bodies |
| topic | broken coal grouting failure mechanism acoustic emission reinforced specimen |
| url | https://www.mdpi.com/2075-163X/13/5/591 |
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