| 寺坪电站引水隧洞冒顶段地质条件及处理措施 |
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| 引用本文： | 占艳平.寺坪电站引水隧洞冒顶段地质条件及处理措施[J].人民长江,2011,42(4):47-49. |
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| 作者姓名： | 占艳平 |
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| 作者单位： | 长江勘测规划设计研究院,长江岩土工程总公司,湖北,武汉,430010 |
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| 摘 要： | 寺坪水电站引水隧洞在K0+310～K0+330段发生冒顶坍塌，直接影响隧洞施工，为了有效解决和处理冒顶段的施工问题，经对冒顶的工程地质条件和冒顶特征进行分析，决定采取超前加固措施。具体作法是从地表打灌浆孔对洞室洞顶及左、右侧墙的岩土体进行固结灌浆，但由于洞室围岩体结构松散、空隙大、漏浆严重，处理效果不佳，而后实施超长管棚支护，取得成功。
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| 关 键 词： | 寺坪水电站 引水洞冒顶 固结灌浆 管棚支护 |
Engineering geological condition and treatment measures for roof falling section of diversion tunnel of Siping Hydropower Station |
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| ZHAN Yanping.Engineering geological condition and treatment measures for roof falling section of diversion tunnel of Siping Hydropower Station[J].Yangtze River,2011,42(4):47-49. |
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| Authors: | ZHAN Yanping |
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| Affiliation: | ZHAN Yanping(Yangtze Geotechnical Engineering Corporation,Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China) |
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| Abstract: | A roof falling accident occurred at K0+310~K0+330 section of diversion tunnel of Siping Hydropower Station and directly influenced the tunnel construction.In order to effectively solve the problems in the section,through analysis on its engineering geological condition and roof falling characteristics,advance reinforcement is adopted and the measures are: consolidating the rock-earth body of the left and right side walls and tunnel roof by grouting from surface boreholes.However,the effects of the treatment... |
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| Keywords: | Siping Hydropower Station roof falling of diversion tunnel consolidating grouting pipe-shed support |
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