| 矩形巷道矿震应力波扩散规律谱元法分析* |
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| 引用本文： | 唐杰兵,鞠文君,焦建康,陈法兵.矩形巷道矿震应力波扩散规律谱元法分析*[J].中国安全生产科学技术,2021,17(9):32-38. |
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| 作者姓名： | 唐杰兵 鞠文君 焦建康 陈法兵 |
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| 作者单位： | (1.煤炭科学研究总院 开采研究分院，北京 100013；2.中煤科工开采研究院有限公司，北京 100013；3.天地科技股份有限公司 开采设计事业部，北京 100013) |
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| 基金项目： | * 基金项目: 天地科技股份有限公司科技创新创业专项基金项目（2020-TD-QN008）；国家自然科学基金项目（51804159） |
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| 摘 要： | 为明晰矿震在巷道围岩中的应力波扩散规律，采用SPECFEM2D程序包谱元法数值模拟方法，研究二维模型在有无矩形巷道情况下应力波扩散过程以及质点最大振动速度PPV值分布规律。结果表明:巷道受S波影响大于受P波影响的程度。巷道表面应力波叠加现象明显，且背波侧巷道左帮上半部分PPV值最大，但深入围岩内部后有巷道时小于无巷道时的PPV值。巷道迎波侧PPV值较背波侧大，且分布范围大，背波侧出现了应力波屏蔽区。巷道顶底板主要受水平方向应力波影响，两帮主要受垂直方向应力波影响。研究结果对理解应力波在矩形巷道周围的扩散规律有一定的参考作用，并对矿震应力波作用下的巷道支护有一定借鉴意义。
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| 关 键 词： | 矩形巷道 应力波 谱元法 质点最大振动速度 |
Spectral element analysis on stress wave diffusion laws of mine earthquake in rectangular roadway |
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| TANG Jiebing,JU Wenjun,JIAO Jiankang,CHEN Fabing.Spectral element analysis on stress wave diffusion laws of mine earthquake in rectangular roadway[J].Journal of Safety Science and Technology,2021,17(9):32-38. |
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| Authors: | TANG Jiebing JU Wenjun JIAO Jiankang CHEN Fabing |
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| Affiliation: | (1.Beijing Mining Research Institute,China Coal Research Institute,Beijing 100013,China;2.Coal Mining Research Institute Co.,Ltd.,China Coal Technology & Engineering Group,Beijing 100013,China;3.Coal Mining & Designing Department,Tiandi Science & Technology Co.,Ltd.,Beijing 100013,China) |
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| Abstract: | In order to understand the stress wave diffusion laws of mine earthquake in the surrounding rock of roadway,the SPECFEM2D package spectral element method was used to study the stress wave diffusion process of two-dimensional model with or without the rectangular roadway and the distribution laws of peak particle velocity PPV value.The results showed that the influence degree of S wave on the roadway was greater than that of P wave.The superposition of stress waves on the roadway surface was obvious,and the PPV value on the upper part of left side of the roadway on the back wave side was the largest,but the PPV value was smaller when there was a roadway deep into the surrounding rock than when there was no roadway.The PPV value on the front wave side of the roadway was larger than that of the back wave side,and the distribution range was large,while there was a stress wave shielding area on the back wave side.The roof and floor of roadway were mainly affected by the horizontal stress wave,and the two sides were mainly affected by the vertical stress wave.The research has a certain reference for understanding the diffusion laws of stress wave around the rectangular roadway,and has a certain reference significance for the roadway support under the action of mine earthquake stress wave. |
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| Keywords: | rectangular roadway stress wave spectral element method peak particle velocity |
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