| 非均匀性对岩石水压致裂过程的影响 |
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| 引用本文： | 杨天鸿,谭国焕,唐春安,冷雪峰,李连崇. 非均匀性对岩石水压致裂过程的影响[J]. 岩土工程学报, 2002, 24(6): 724-728 |
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| 作者姓名： | 杨天鸿 谭国焕 唐春安 冷雪峰 李连崇 |
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| 作者单位： | 东北大学岩石破裂与失稳研究中心；香港大学土木工程系；东北大学岩石破裂与失稳研究中心 辽宁沈阳 110006；香港；辽宁沈阳 110006； |
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| 基金项目： | 国家自然科学基金重点资助项目(50134040) |
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| 摘 要： | 使用岩石破裂失稳的渗流应力耦合系统研究带有圆孔的圆形岩石试件水压作用下的开裂、扩展和失稳过程。结果表明,岩石的非均质性导致破裂的初始压力和失稳压力明显不同,水压破裂路径不规则发展。
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| 关 键 词： | 水压致裂 非均匀性 数值模拟 破裂过程 F-RFPA2D系统 |
| 文章编号： | 1000-4548(2002)06-0724-05 |
| 修稿时间： | 2002-03-28 |
Influence of heterogeneity on hydraulic fracturing in rocks |
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| YANG Tianhong,L.G. Tham,TANG Chunan,LENG Xuefeng,LI Lianchong. Influence of heterogeneity on hydraulic fracturing in rocks[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(6): 724-728 |
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| Authors: | YANG Tianhong L.G. Tham TANG Chunan LENG Xuefeng LI Lianchong |
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| Affiliation: | 1.Centre for Rock Instability and Seismicity Research Northeastern University Shenyang 110006 China 2.Department of Civil and Structural Engineering The Hong Kong University Hong Kong China |
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| Abstract: | Circular samples with borehole are numerically loaded using flow coupled Rock Failure Process Analysis code (F-RFPA2D) under internal hydraulic pressure rising at a constant rate under zero confining pressure to investigate the hydraulic fracture initiation, propagation and breakdown. Our findings are:heterogeneity of rock has a significant influence on initiation?breakdown pressure and irregular hydraulic fracture trajectory;hydraulic fracture initiation occurs considerably early before breakdown pressure is reached;the random location of the individual inhomogeneities results in an irregular hydraulic fracture trajectory. |
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| Keywords: | hydraulic fracturing heterogeneity numerical simulation failure process F-RFPA2D |
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