基于Barton-Bandis准则的岩体破坏模式快速识别方法
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P583

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国家自然科学基金项目(U21A20159;52179117);中国科学院青年创新促进会项目(2021325);攀钢集团矿业有限公司研究项目(2021-P6-D2-05)


Research on Fast Identification Method of Rock Failure Mode Based on Barton-Bandis Criterion
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    摘要:

    岩体由岩石和结构面网络组成,结构面强度模型对岩体稳定性分析起着决定性影响。本文详细探讨了Barton-Bandis准则在岩体结构破坏模式判断中的应用。首先,推导了当结构面服从Barton-Bandis准则时,结构面屈服时倾角的取值范围,提出了结构面屈服的判据,并采用数值模拟法验证了理论推导结果的正确性;基于理论推导的结果,并假定岩石服从Mohr-Coulomb准则,提出了一种岩体结构破坏模式的快速识别方法,将岩体结构破坏分为“不发生破坏”、“沿结构面发生破坏”、“沿岩石发生破坏”和“同时沿岩石和结构面发生破坏”四种模式,并验证了该识别方法的正确性。本文研究成果可以为工程实践的岩体结构破坏识别提供理论指导和技术支持。

    Abstract:

    Rock mass is composed of rock and discontinuity network. The strength model of discontinuity plays a decisive role in rock mass stability analysis. In this paper, the application of Barton-Bandis criterion in failure mode identification of rock mass is discussed in detail. Firstly, when structural plane obeys Barton-Bandis criterion, the value range of the dip angle of structural plane when it is yield is deduced, and the judgment of structural plane yield is proposed. The correctness of the theoretical derivation result is verified by numerical simulation method. Based on the result of theoretical derivation and assuming rock obeys Mohr-Coulomb criterion, a fast identification method for the failure modes of rock mass is proposed. The failure modes of rock mass are divided into “no failure”, “failure along structural plane”, “failure along rock” and “failure along both rock and structural plane”, and the correctness of the identification method is verified. The results of this paper provide theoretical guidance and technical support for rock mass structural failure identification in engineering practice.

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万道春,庞鑫,李得,等. 基于Barton-Bandis准则的岩体破坏模式快速识别方法[J]. 科学技术与工程, 2023, 23(14): 5922-5928.
Wan Daocun, Pang Xin, Li De, et al. Research on Fast Identification Method of Rock Failure Mode Based on Barton-Bandis Criterion[J]. Science Technology and Engineering,2023,23(14):5922-5928.

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  • 收稿日期:2022-09-01
  • 最后修改日期:2023-03-08
  • 录用日期:2022-12-02
  • 在线发布日期: 2023-06-01
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