Experimental Study on the Mechanical Properties of Rock Fracture after Grouting Reinforcement
文献类型：期刊论文
| 作者 | Liu, Bin2; Sang, Haomin1,2; Wang, Zhiqiang1,2; Kang, Yongshui2 |
| 刊名 | ENERGIES
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 13期号:18页码:12 |
| 关键词 | grouting reinforcement rock fracture tensile properties shear properties |
| DOI | 10.3390/en13184814 |
| 英文摘要 | Grouting reinforcement plays an important role in repairing fractures and improving the strength of the surrounding rock. To address practical engineering challenges such as caving and chip off-falling of surrounding rock in deep roadways, normal splitting was adopted to prefabricate fractures on rock samples gathered from underground coal mines. This was done to better match the rock fracture specimen with actual conditions. Based on the elementary unit of a fracture surface, systematic experiments were conducted on the tensile properties of rock fractures after grouting reinforcement, and the shear properties were studied after considering the presence of gas. As per the results, the tensile strength of rock fractures increased with the increase in viscosity of grout, but the overall tensile strength was relatively low. The overall tensile effect of surrounding rock was improved less by grouting approach. When the presence of fracture gas in grouting was considered, the peak shear strength of fractures after grouting was 8.34-29.9% less than that without considering the fracture gas. The cemented pore surface produced by unsaturated cementation in the grouting reinforcement was the main cause of reduction in cohesion and frictional angle of rock fractures. The conclusions of this study have great significance for guiding engineering grouting and evaluating the grouting effect. |
| 资助项目 | National Natural Science Foundation of China[51974289] ; National Natural Science Foundation of China[51774267] ; National Natural Science Foundation of China[41807250] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000580070900001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24953]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Kang, Yongshui |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Bin,Sang, Haomin,Wang, Zhiqiang,et al. Experimental Study on the Mechanical Properties of Rock Fracture after Grouting Reinforcement[J]. ENERGIES,2020,13(18):12. |
| APA | Liu, Bin,Sang, Haomin,Wang, Zhiqiang,&Kang, Yongshui.(2020).Experimental Study on the Mechanical Properties of Rock Fracture after Grouting Reinforcement.ENERGIES,13(18),12. |
| MLA | Liu, Bin,et al."Experimental Study on the Mechanical Properties of Rock Fracture after Grouting Reinforcement".ENERGIES 13.18(2020):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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