| 钱永祥.基于声发射能量的尾砂胶结充填体损伤演化模型[J].水泥工程,2020,33(5):27-28 |
| 基于声发射能量的尾砂胶结充填体损伤演化模型 |
| Damage evolution model of tailings cemented backfill based on acoustic emission energy |
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| DOI： |
| 中文关键词: 尾矿胶结充填 循环装载和卸载 损坏特征 声发射能量 |
| 英文关键词: tailings cemented filling cyclic loading and unloading damage characteristics acoustic emission energy |
| 基金项目: |
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| 中文摘要: |
| 尾矿胶结充填广泛应用于矿山管理采空区的生产活动中，也是实现绿色开采和安全生产的主要技术之一。本文基于声发射技术对尾砂胶结充填体进行了循环加载和卸载试验，分析了加载过程中声发射能量的演化趋势，定义了基于声发射能量的损伤变量，建立了基于声发射能量的尾砂胶结充填体损伤演化方程，探索了声发射能量与损伤能量释放率之间的定量关系。为矿区胶结充填体承载过程分析和失效预测提供了基础研究依据。 |
| 英文摘要: |
| Tailings cemented filling is widely used in the production activities of the mine goaf， and it is also one of the main technologies to realize green mining and safe production. In this paper， the cyclic loading and unloading tests of the tailings cemented packing body are carried out based on the acoustic emission technology， the evolution trend of the acoustic emission energy during the loading process is analyzed， the damage variables based on the acoustic emission energy are defined， and the tailings based on the acoustic emission energy are established. The damage evolution equation of cemented backfill has explored the quantitative relationship between acoustic emission energy and damage energy release rate. It provides a basic research basis for the analysis and failure prediction of the bearing process of the cemented backfill in the mining area. |
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