李凯锐,王明洋,戚承志,等.基于特征能量因子的深部围岩分区破裂空间演化特征研究[J].河南理工大学学报(自然科学版)，doi: 10.16186/j.cnki.1673-9787.2024100025.

LI K R, WANG M Y, QI C Z, et al． Research on the spatial evolution characteristics of zonal disintegration in deep surrounding rock based on the characteristic energy factor[J]. Journal of Henan Polytechnic University( Natural Science) ，doi: 10.16186/j.cnki.1673-9787.2024100025.

基于特征能量因子的深部围岩分区破裂空间演化特征研究(网络首发)

李凯锐^1,2，王明洋³，戚承志¹，常庭瑞¹，吕易铮¹

1.北京建筑大学 土木与交通工程学院,北京 100044；2. 中铁十四局集团有限公司,山东 济南 250014；3. 中国人民解放军陆军工程大学 爆炸冲击防灾减灾国家重点实验室,江苏 南京 210007

摘要: 深部围岩分区破裂化现象是深地工程中典型的非线性力学响应，是围岩在复杂应力状态下特有的能量耗散表现。目的 由于传统连续介质力学和断裂力学理论的局限性，难以准确揭示其空间构造特征，尤其在三维应力状态和复杂地质条件下。针对这一问题，本文旨在另辟蹊径，以新的视角探索分区破裂化的空间构造规律，为深地巷道的施工提供科学指导。方法 基于深部岩体准共振和摆形波现象的无量纲条件，推导出能够反映深部岩体能量演化的“特征能量因子”。该特征能量因子从统计物理的角度描述了深部围岩的含能特性。通过对大量现场监测数据和模型试验数据的统计分析，揭示了在分区破裂化现象发生时，特征能量因子的空间变化规律。结果 通过与Shemyakin提出的最远破裂区半径的经验公式及某矿区3213工作面的实测数据进行对比，验证了分区破裂化现象的空间构造特征与特征能量因子之间的量级演化规律。这表明，围岩特征能量因子的演化能够反映出分区破裂化的空间构造特征。结论 该空间构造规律模型参数少、测量方便，具备良好的实用性和推广性，适用于深部巷道施工的预判分析和围岩支护设计。此外，该模型能够在实际工程中大大简化计算，为深地工程安全的提升提供了新途径，对未来深地巷道施工规划和围岩支护策略的制定具有重要意义。

关键词:深部巷道；分区破裂化；开挖扰动；空间构造；特征能量因子

doi: 10.16186/j.cnki.1673-9787.2024100025.

基金项目:国家自然科学基金资助项目(12172036)

收稿日期：2024-10-18

修回日期：2024-11-11

网络首发日期：2025-01-08

Research on the spatial evolution characteristics of zonal disintegration in deep surrounding rock based on the characteristic energy factor(Online)

LI Kairui^1,2, WANG Mingyang³, QI Chengzhi¹, CHANG Tingrui¹, LYU Yizheng¹

1.School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China；2. China Railway 14th Bureau Group Co., Ltd., Jinan 250014, Shandong, China；3. State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, The Army Engineering University of PLA, Nanjing 210007, Jiangsu, China

Abstract: The zonal disintegration phenomenon is a typical nonlinear mechanical response in deep underground engineering, representing a unique form of energy dissipation under complex stress conditions. Objectives Due to the limitations of traditional continuum mechanics and fracture mechanics, it is challenging to accurately reveal its spatial structural characteristics, particularly under 3D stress states and complex geological conditions. To address this issue, the spatial structural characteristics was explored from a new perspective for providing scientific guidance for deep tunnel construction. Methods the field measurement,numerical calculation and theoretical analysis method were used to analyze the law of mine pressure behaviors of surrounding rock during gateway excavation in variable width coal pillar.The surrounding rock stress field and the energy distribution characteristics ofcoal-rock mass under the condition of widening coal pillar retaining roadway were studied,and the mechanism of mine pressure behaviors during the gateway excavation of variable width coal pillar in extra-thick coal seam was obtained. Results A comparative analysis with Shemyakin’s empirical formula for the farthest fracture zone radius and measurement data of the 3213 working face in un underground mine validated the scaling evolution relationship between the spatial structure of zonal disintegration and the characteristic energy factor. This indicated that the evolution of the characteristic energy factor can reflect the spatial structure characteristic of zonal disintegration. Conclusions The proposed model for spatial structure has a minimal number of parameters, is easy to measure, and demonstrates strong practicality and applicability, making it well-suited for predictive analysis and support design in deep tunnel construction. Additionally, this model can significantly simplify calculations, providing a novel approach to enhancing safety in deep underground projects. It holds considerable potential for future planning of deep tunnel construction and the development of surrounding rock support strategies.

Key words: deep tunnel; zonal disintegration; excavation disturbance; spatial distribution; characteristic energy factor