| 乌东德水电站特高拱坝施工期坝基岩体质量工程地质评价 |
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| 引用本文： | 王吉亮,郝文忠,黄孝泉,许琦,魏雨军,周炳强,徐磊.乌东德水电站特高拱坝施工期坝基岩体质量工程地质评价[J].吉林大学学报(地球科学版),2018,48(5):1566-1573. |
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| 作者姓名： | 王吉亮 郝文忠 黄孝泉 许琦 魏雨军 周炳强 徐磊 |
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| 作者单位： | 长江三峡勘测研究院有限公司, 武汉 430074 |
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| 基金项目： | 国家重点研发计划项目（2017YFC1502601） |
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| 摘 要： | 特高型拱坝坝拱座岩体承受的荷载巨大，坝基岩体质量是拱座稳定的关键，在施工期如何准确评价坝基岩体质量，是拱坝建基岩体工程地质研究的重要问题。本文以工程地质条件研究为基础，从岩性、岩体结构分布着手，研究建基岩体工程地质特征；以现场、室内试验、声波测试为依据，建立坝基岩体质量评价标准。对乌东德拱坝施工期揭露的建基面岩体进行质量划分，研究发现：乌东德拱坝建基岩体质量优良，以Ⅱ级岩体占绝大多数，少量Ⅲ1级岩体，极少量Ⅲ2级岩体，与可研成果高度吻合；建基岩体满足岩体质量与声波验收要求，岩体质量空间分布较连续，且相对均匀，有利于承受拱坝推力。
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| 关 键 词： | 乌东德水电站 特高拱坝 建基岩体 岩体质量分级 施工期 |
| 收稿时间： | 2018-06-26 |
Geological Study of Rock Mass Quality of Wudongde High Arc Dam Foundation Under Construction Period |
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| Wang Jiliang,Hao Wenzhong,Huang Xiaoquan,Xu Qi,Wei Yujun,Zhou Bingqiang,Xu Lei.Geological Study of Rock Mass Quality of Wudongde High Arc Dam Foundation Under Construction Period[J].Journal of Jilin Unviersity:Earth Science Edition,2018,48(5):1566-1573. |
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| Authors: | Wang Jiliang Hao Wenzhong Huang Xiaoquan Xu Qi Wei Yujun Zhou Bingqiang Xu Lei |
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| Institution: | Three Gorges Geotechnical Consultants Co., Ltd., Wuhan 430074, China |
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| Abstract: | The most load of the arc dam is transmitted to the abutment rock mass of both sides through the arch dam foundation. How to accurately evaluate the quality of dam foundation rock mass during construction period is important for engineering geology research of arch dam foundation rock mass. Based on the engineering geological conditions, the authors studied the engineering geological characteristics of foundation rock mass, such as lithology and rock mass structure etc., and built the rock mass quality classification standard, combining with the field and laboratory tests and the sonic test of rock mass. According to the rock mass quality classification during excavation, most of the rock mass is of gradeⅡ, a small amount of grade Ⅲ1, and very small amount of Ⅲ2, which are agreed with the result of the feasibility study stage. The quality of rock mass meets the requirement of dam construction. The distribution of rock mass is continuous and beneficial to the arch dam. |
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| Keywords: | Wudongde hydropower station high arc dam dam foundation rock mass quality classification construction period |
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