| 采场顶板稳定性位移与声发射组合识别研究 |
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| 引用本文： | 赵奎,胡源,王晓军,冯萧,卓毓龙.采场顶板稳定性位移与声发射组合识别研究[J].有色金属科学与工程,2015,6(3):72-77. |
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| 作者姓名： | 赵奎 胡源 王晓军 冯萧 卓毓龙 |
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| 作者单位： | 1.江西理工大学资源与环境工程学院，江西赣州 341000 |
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| 基金项目： | 国家自然科学基金资助项目51304083江西省科技支撑计划项目20141BBE50005 |
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| 摘 要： | 地下工程顶板变形破坏是一个复杂的非线性过程，单一监测结果难以对其稳定性状态准确判别.基于数理统计的方法推导了顶板变形过程中位移监测样本的标准差，根据结果分别表征了无变形、稳定变形和加速变形3个顶板变形阶段.结合当前岩体破坏声发射特征参数分析试验结果，对顶板岩体变形过程的位移与声发射监测结果进行组合分析，提出了顶板稳定性识别的4种模式.结合某矿工程实例，对回采过程顶板破坏进行了准确预测.研究结果为地下工程顶板稳定性监测结果分析提供了数据处理新方法，加强了顶板稳定性识别的准确性.
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| 关 键 词： | 标准差 加速变形 声发射 顶板稳定性 |
| 收稿时间： | 2014-12-30 |
Stope roofing stability displacement and its identification by acoustic emission features |
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| Affiliation: | 1.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China2.Post-doctoral Scientific Research Workstation, Western Mining Co. Ltd., Xining 810006, China |
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| Abstract: | The roof deformation of underground projects is a complex nonlinear process. The single monitoring means is insufficient to determine its roofing stability accurately. Standard deviation of displacement monitoring sample for roofing deformation process is deduced based on mathematical statistics. Three deformation stages for stope roofing, non-deformation, stable deformation and accelerated deformation are characterized according to the fore-mentioned results. Acoustic emission characteristics are analyzed during rock deformation and failure according to the combined analysis results of displacement and acoustic emission. The stability criterion of roof is divided into four kinds of modes. Combined with the engineering example of a mine, the roof failure is accurately predicted during mining process. The result provides a new data processing method for stability analysis of roof of underground projects by improving the accuracy of roof stability criterion. |
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