| 矿柱流变对采空区顶板稳定性的影响 |
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| 引用本文： | 巨未来,王文杰. 矿柱流变对采空区顶板稳定性的影响[J]. 中国矿业, 2020, 29(4): 104-107+115 |
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| 作者姓名： | 巨未来 王文杰 |
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| 作者单位： | 武汉科技大学 资源与环境工程学院,武汉科技大学 资源与环境工程学院 |
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| 基金项目： | 湖北省自然科学基金资助项目（2014CFB814） |
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| 摘 要： | 为研究岩石流变特性对采空区长期稳定的影响,基于Reissner厚板和流变力学理论构建了矿柱-顶板流变力学模型,并推导出顶板沉降位移关于流变时间的关系式;依据不同边界条件将顶板破坏过程划分为固支、固支-简支、简支和内部破坏四个阶段。研究结果表明:所建立的流变力学模型可用于对采空区稳定时间的预测,并为采空区及时处理提供参考。
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| 关 键 词： | Reissner厚板 岩石流变 采空区 塌陷 |
| 收稿时间： | 2019-04-08 |
| 修稿时间： | 2020-04-09 |
Influence of Rheology of Pillar on Roof of Stability of Mined-out Area |
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| JU Weilai and WANG Wenjie. Influence of Rheology of Pillar on Roof of Stability of Mined-out Area[J]. CHINA MINING MAGAZINE, 2020, 29(4): 104-107+115 |
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| Authors: | JU Weilai and WANG Wenjie |
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| Affiliation: | School of Resources and Environental Engineering,Wuhan University of Science and Technology,Wuhan Hubei,School of Resources and Environental Engineering,Wuhan University of Science and Technology,Wuhan Hubei |
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| Abstract: | In order to study the influence of rheological properties of rock mass on long-term stability of minted-out area, a rheological mechanics model of pillar-roof was constructed based on Reissner thick plate and rheological mechanics theory, and the equation of subsidence displacement of roof with respect to rheological time was derived. The roof failure process is divided into four stages: clamped-clamped, clamped-pinned, pinned-pinned and internal damage stage based on the different boundary conditions. Then, the research results show that the established rheological mechanics model can be applied to predict the stabilization time of mined-out area and provide reference for timely processing. |
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| Keywords: | Reissner plate, rock rheology, mined-out area, collapse |
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