| 河床钻孔压水试验压力取值的探讨 |
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| 引用本文： | 胡耀飞,吴章群.河床钻孔压水试验压力取值的探讨[J].人民长江,2011,42(11):13-15. |
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| 作者姓名： | 胡耀飞 吴章群 |
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| 作者单位： | 1. 成都理工大学环境与土木工程学院,四川成都610059;中国水电顾问集团成都勘测设计研究院,四川成都610072
2. 中国水电顾问集团成都勘测设计研究院,四川成都,610072 |
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| 摘 要： | 在水电工程河床钻孔压水试验中，对于埋深较大的紧密段岩体，因计算压力取值的关系，其压水试验所得透水率往往不能满足规范规定的岩体透水率不大于1 Lu的要求。为此，以某高重力坝河床花岗岩体钻孔压水试验为例，对水电工程中钻孔压水试验中的压力取值进行了探讨，提出了在河床部位一定深度微新紧密岩体的压水试验中压力计算的方法，按此方法所计算的压水试验成果，既能满足高坝岩体透水率不大于1 Lu的防渗的要求，又能客观反映坝址河床基岩的真实情况，对指导现场压水试验具有现实意义。
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| 关 键 词： | 钻孔压水试验 透水率 微透水 紧密岩体 压力取值 |
Discussion on pressure value determination for water pressure test by hole drilling on riverbed |
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| HU Yaofei,WU Zhangqun.Discussion on pressure value determination for water pressure test by hole drilling on riverbed[J].Yangtze River,2011,42(11):13-15. |
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| Authors: | HU Yaofei WU Zhangqun |
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| Affiliation: | HU Yaofei1,2,WU Zhangqun2(1.College Of Environment and Civil Engineering,Chengdu University of Technology,Chengdu 610059,China,2.Hydrochina Chengdu Engineering Corporation,Chengdu 610072,China) |
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| Abstract: | Permeability rate of deep-burried dense rock mass obtained by water pressure test in drilling hole usually can not meet the requirements of code which requires permeability rate less than 1 Lu.According to a water pressure test in drilling hole in granite riverbed of a gravity dam foundation,we discuss pressure value determination of water pressure test in drilling hole,and propose the pressure calculation method in fresh and dense rock mass in a certain depth of river bed.Thus,by the presented method,the p... |
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| Keywords: | water pressure test in drilling hole permeability rate weak permeability dense rock mass pressure value determination |
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