Continuous three-dimensional stress monitoring in roof of coal mines for investigating the rockburst control effect with hydraulic fracturing
文献类型：期刊论文
| 作者 | Gao, Hou; Zhao, Wusheng; Chen, Weizhong; Xie, Peiyao; Zhong, Kun; Qin, Changkun |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 81期号:17 |
| 关键词 | Hydraulic fracturing Rockburst Roof Three-dimensional stress Elastic strain energy |
| ISSN号 | 1866-6280 |
| 英文摘要 | The occurrence of rockburst in coal mines is closely related to the stress in coal and rock mass. Through hydraulic fracturing measurements in roof, the three-dimensional stress in roof before and after hydraulic fracturing as well as during working face advancing was monitored, and the effect of hydraulic fracturing in roof on controlling rockburst was studied. The test results show that (1) after hydraulic fracturing, the three principal stresses in roof decreased remarkably, whose maximum reduction was about 20%, while the elastic strain energy in roof decreased by about 31% as well; (2) as the working face advanced, the three principal stresses in roof in front of the working face would increase continuously until reaching peaks and induce the strata fracture, and the variation of the elastic strain energy in roof was basically consistent with that of the magnitude of the stress; (3) with hydraulic fracturing, the position of the peak stress moved from 11 to 21 m in front of the working face, the peaks of the three principal stresses decreased, whose maximum reduction was about 32%, and the peak of the elastic strain energy in roof also significantly decreased by about 51%. The field investigation shows that hydraulic fracturing in roof can release the stress and elastic strain energy in coal and rock mass instantaneously, and will reduce the risk of rockburst; hydraulic fracturing in roof can be an effective pre-destressing method to reduce the stress and energy concentration in coal and rock mass during mining, and will prevent the risk of rockburst. |
| 学科主题 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000848745700001 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34774]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Gao, Hou,Zhao, Wusheng,Chen, Weizhong,et al. Continuous three-dimensional stress monitoring in roof of coal mines for investigating the rockburst control effect with hydraulic fracturing[J]. ENVIRONMENTAL EARTH SCIENCES,2022,81(17). |
| APA | Gao, Hou,Zhao, Wusheng,Chen, Weizhong,Xie, Peiyao,Zhong, Kun,&Qin, Changkun.(2022).Continuous three-dimensional stress monitoring in roof of coal mines for investigating the rockburst control effect with hydraulic fracturing.ENVIRONMENTAL EARTH SCIENCES,81(17). |
| MLA | Gao, Hou,et al."Continuous three-dimensional stress monitoring in roof of coal mines for investigating the rockburst control effect with hydraulic fracturing".ENVIRONMENTAL EARTH SCIENCES 81.17(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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