| 岩石断裂过程的声发射试验研究 |
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| 引用本文： | 秦四清. 岩石断裂过程的声发射试验研究[J]. 地质灾害与环境保护, 1994, 5(3): 48-55 |
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| 作者姓名： | 秦四清 |
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| 作者单位： | 中国航空工业勘察设计研究院!北京100086 |
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| 基金项目： | 成都理工学院“国家地质灾害防治与地质环境保护专业实验室”开放基金资助项目 (9407) |
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| 摘 要： | 根据N-t,φ-t,E-t,A(t)-t曲线,并结合读数显微镜实测观察,可较准确地判定开裂点。在计算大理岩临界应力强度因子时,考虑了裂纹扩展长度的影响.导出了低脆性岩石N-K_1关系的一般表达式,并与Harris公式进行了比较.研究了声发射事件数与裂纹扩展长度增量的关系。
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| 关 键 词： | 岩石力学 裂纹扩展 声发射 断裂过程 试验研究 |
EXPERIMENT RESEARCH ON ACOUSTIC EMISSION IN THE PROCESS OF ROCK FRACTURING |
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| Qin Siqing. EXPERIMENT RESEARCH ON ACOUSTIC EMISSION IN THE PROCESS OF ROCK FRACTURING[J]. Journal of Geological Hazards and Environment Preservation, 1994, 5(3): 48-55 |
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| Authors: | Qin Siqing |
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| Abstract: | Under the microscope the split open point can be judged accurately to the curves of N-t,-t,En-t,A(t)-t. In this paper study of intensity of critical stress of the marble ,the influence of length of crack spreading is taken into account and the general expression of N-K1 relation of brittle rock is calculated. It is compared with Harris' s formula . In addition, the relation between the number of the acoustic emission and the increment of crack spreading is also studied in this paper. |
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| Keywords: | Rock Intensity factor of critical stress Crack spreading Acoustic Emission |
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