| 声波测试法在判别地下厂房EDZ中的应用 |
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| 引用本文： | 徐光黎,董家兴,李志鹏,宋胜武,张世殊,王金生.声波测试法在判别地下厂房EDZ中的应用[J].地球科学,2014,39(11):1599-1606. |
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| 作者姓名： | 徐光黎 董家兴 李志鹏 宋胜武 张世殊 王金生 |
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| 作者单位： | 1.中国地质大学岩土钻掘与防护教育部工程研究中心, 湖北武汉 430074 |
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| 基金项目： | 国家自然科学基金资助项目(Nos．41472263，40572152)；雅砻江水电开发联合研究基金重点资助项目(No．50539100)；中国水电工程顾问集团公司科研项目(No．P099)． |
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| 摘 要： | 洞室开挖不可避免地会损伤岩体, 对于规模巨大、布置异常复杂的水电地下厂房围岩尤甚, 合理地确定开控损伤区(EDZ)分布成为地下洞室的信息化设计、施工和安全运营的关键性问题.在引入EDZ概念及强EDZ、弱EDZ和基本未损区分区的基础上, 提出采用声波测试方法来确定强EDZ和弱EDZ的分布.将声波波速-深度曲线划分为Ⅰ型、Ⅱ型和Ⅲ型等3种曲线类型, 根据曲线特征点, 对EDZ进行定性、半定量的初判.根据波速计算得出的损伤因子D, 对强、弱EDZ和基本未损区进行定量的判别.首次提出的基于声波测试法, 定性、半定量和定量相结合的综合研判法具有创新性, 为客观评价地下洞室EDZ提供了科学的方法.
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| 关 键 词： | 地下洞室 开控损伤区(EDZ) 声波测试 声波曲线特征 损伤因子 地质工程 |
| 收稿时间： | 2013-11-15 |
EDZ Assessment for Underground Cavern by Acoustic Wave Metgod |
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| Xu Guangli
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Dong Jiaxing
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Li Zhipeng
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Song Shengwu
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Zhang Shishu
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Wang Jinsheng.EDZ Assessment for Underground Cavern by Acoustic Wave Metgod[J].Earth Science-Journal of China University of Geosciences,2014,39(11):1599-1606. |
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| Authors: | Xu Guangli Dong Jiaxing Li Zhipeng Song Shengwu Zhang Shishu Wang Jinsheng |
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| Abstract: | Excavation Damaged Zone (EDZ) assessment is important for the design, execution and operation of modern underground engineering. However, it is very difficult to determine EDZ because of the complexity of lithology, geostress, excavation method, cavern size and shape, etc.. Based on its definition, EDZ is subdivided into excavation highly damaged zone (EHDZ), excavation slightly damaged zone (ESDZ) and basically undamaged zone in this paper. Acoustic wave velocity method is suggested to determine EDZ. The acoustic wave curves are classified into type Ⅰ, type Ⅱ and type Ⅲ. EHDZ and ESDZ can be qualitatively determined by characteristic points of acoustic wave curves. A damage factor D calculated by the acoustic wave velocities is adapted to quantitatively assess EDZ. It is found that the comprehensive method and index provide us a good assessment of EDZ for underground caverns. |
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| Keywords: | underground cavern Excavation Damaged Zone acoustic wave method damage factor geology engineering |
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