土工基础 ›› 2024, Vol. 38 ›› Issue (1): 96-102.

• 专题论述 • 上一篇    下一篇

基于能量原理的岩爆倾向性评判

马池帅   

  1. (国家知识产权局专利局专利审查协作湖北中心,武汉 430205)
  • 收稿日期:2022-07-02 修回日期:2022-07-25 出版日期:2024-02-29 发布日期:2024-03-07
  • 作者简介:马池帅(1989-),男,博士,知识产权师,专利审查员,研究方向为离心、分选。

Advance and Review on Shear-Flow Coupling of Fractured Rock

MA Chishuai   

  1. (Patent Examination Cooperation (Hubei) Center of the Patent Office, CNPA, Wuhan 430205)
  • Received:2022-07-02 Revised:2022-07-25 Online:2024-02-29 Published:2024-03-07

摘要: 以典型硬岩—N~J水电站TBM引水隧洞砂岩为研究对象,建立基于能量耗散的硬脆性岩石损伤模型,并基于能量原理进行岩爆风险评判,主要结论如下:①从能量的观点和工程应用的角度出发,定量跟踪分析了岩爆孕育过程中的能量积聚情况,综合脆性指数和能量判据,提出基于能量原理的修正岩爆判别指标Prb。②应力强度比指标、能量指标和修正能量指标在掌子面在监测断面前后1倍洞径范围均剧烈变化,有发生强烈~极强岩爆的可能;与最大主应力垂直方向上,修正岩爆能量指标与原能量判据类似,相应的岩爆爆坑位置与另外两个判据差别不大,但岩爆范围预判更为准确;与最大主应力平行方向上,原应力判据判别为无岩爆,原能量判据则判别为中等岩爆,而修正判据判别为弱岩爆,与原应力、能量判据相比更符合现场实际情况。

关键词: 岩爆, 能量, 倾向性评判

Abstract: A modified energy criterion of the rock burst is proposed, by accounting for the brittleness index and the rock burst energy criteria comprehensively. The energy accumulation in the rock burst incubation process was tracked and analyzed quantitatively, and the intensity and the position of the rock burst in the excavation process of the underground engineering under the high stress were predicted reasonably based on the numerical simulations. The evolution of the rock burst incubation was explored. The rationality and effectiveness of the modified energy criterion were verified by comparing the original prediction index applied to the typical rock burst case.


Key words: Rock Burst, Energy, Tendentiousness Judgment

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