| 岩爆岩石弹射性能综合指数 Krb判据 |
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| 引用本文： | 谭以安,孙广忠.岩爆岩石弹射性能综合指数 Krb判据[J].地质科学,1991,0(2):193-200. |
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| 作者姓名： | 谭以安 孙广忠 |
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| 作者单位： | 1. 中国国际工程咨询公司;2. 中国科学院地质研究所 |
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| 摘 要： | 本文以正在施工的南盘江天生桥大型水电站引水隧洞中产生岩爆的石灰岩为试件,在电液闭路伺服控制刚性试验机上进行了大量的岩石弹射试验。依据荷载-位移全过程曲线,分析了有效弹射能 Weff 与岩爆岩石脆性指数 Ku、应力下降指数 Kσ以及弹性应变能指数 Kw 之间的关系,提出了岩爆岩石弹射性能综合指数 Krb判据。
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| 关 键 词： | 岩爆 弹射性能 脆性指数 应力 下降指数 弹性应变能指数 |
| 收稿时间： | 1989-02-01 |
| 修稿时间： | 1989-02-01; |
A COMPOSITE INDEX Krb CRITERION FOR THE EJECTION CHARACTERISTICS OF THE BURST ROCK |
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| Tan Yian,Sun Guangzhong,Guo Zhi.A COMPOSITE INDEX Krb CRITERION FOR THE EJECTION CHARACTERISTICS OF THE BURST ROCK[J].Chinese Journal of Geology,1991,0(2):193-200. |
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| Authors: | Tan Yian Sun Guangzhong Guo Zhi |
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| Institution: | 1. China International Engineering Consulting corporation;2. Institute of Geology, Academia Stnica, Beijing 100029 |
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| Abstract: | This paper deals with the rock mechanical ejection tests of limestone samples on the electro-hydraulic servo-controlled testing machine. The samples were taken from the tunnel, where rockbursts occurred, at the Tianshengqiao Hydropower Station on Nanpanjiang River.According to the whole-load deformation process charts, the relations between the effective ejection energy (Weff) and brittleness index (Ku), and between elastic strain energy index (Kw), and stress drop index (Kσ) were analysed. Summarizing the ejection characteristics of the rock, the authors propose a composite index (Krb) criterion for the burstrock.Key words burstrock, brittleness index, stress drop index, elastic strain energy index, composite index of the rock, ejection characteristics |
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| Keywords: | burstrock brittleness index stress drop index elastic strain energy index composite index of the rock ejection characteristics |
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