| 引用本文： |
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谭卓英,吴恒,王思敬,张永双,张建国.岩石孔底断裂控制机理研究[J].广西科学,1999,6(4):266-271. [点击复制]
- Tan Zhuoying,Wu Heng,Wang Sijing,Zhang Yongshuang,Zhang Jianguo.Fracture Control Mechanism at the Bottom of the Charged Holes in Rock[J].Guangxi Sciences,1999,6(4):266-271. [点击复制]
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| 摘要: |
| 在保证垂直槽孔断裂成型并全面贯通的孔压下,对孔底水平截面I-Ⅱ型复合裂纹断裂机理及断裂与装药结构的关系等进行了分析,建立了断裂判据,初步确定了裂纹扩展的方向及预应力对断裂的贡献。其结果与工程实践相吻合。 |
| 关键词: 切槽 预应力 孔压 装药长度 |
| DOI： |
| 投稿时间：1999-02-01修订日期：1999-08-02 |
| 基金项目:广西科学技术厅重点技术攻关项目(9645022)及中国科学院资源与生态环境研究重点项目(ZK952-J1-416)支持。 |
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| Fracture Control Mechanism at the Bottom of the Charged Holes in Rock |
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Tan Zhuoying, Wu Heng, Wang Sijing, Zhang Yongshuang, Zhang Jianguo
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| (College of Resources & Environment, Guangxi Univ., 10 Xixiangtanglu, Nanning, Guangxi, 530004, China) |
| Abstract: |
| Under the premise of grooved-hole pressure which can completely split the section between the axes of vertical grooved-holes,analysis about fracture mechanism of Ⅰ-Ⅱ co crackle on level section at the bottom of the holes and relationship between fracture function and charged structure are carried out.At the same time,fracture criterion is established,crackle extending direction and its contributions to fracture function from preset tensile stress are determined quantitatively and tentatively.The results of which agree with the engineering practice. |
| Key words: grooved-hole preset stress hole-in-pressure charged length |
