| 某水电站坝基岩体结构面室内大型直剪试验研究 |
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| 引用本文： | 柏永岩,聂德新.某水电站坝基岩体结构面室内大型直剪试验研究[J].力学学报,2007,15(3):380-383. |
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| 作者姓名： | 柏永岩 聂德新 |
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| 作者单位： | 成都理工大学环境与土木工程学院,成都610059 |
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| 摘 要： | 岩体结构面的抗剪强度是表征岩体强度的一项重要参数,但由于原位试验受场地等诸多因素影响,难以大规模的开展,本文提出在室内用结构面大型剪切试验开展结构面的剪切特性研究,以某水电站坝基砂岩岩体中的硬性结构面为研究对象,取得了较好的成果。试验表明:结构面的多组剪切变形曲线具有一定的应变硬化的特征;达到峰值剪切强度时的剪切位移普遍较大,在8.9mm～44.5mm之间;砂岩中硬性结构面光滑面的“基本摩擦角”为31.4°,结构面“平均起伏角”为6.3°。
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| 关 键 词： | 岩体结构面 大型室内直剪试验 |
| 收稿时间： | 2006-10-11 |
| 修稿时间： | 2007-01-17 |
LARGE SHEAR TESTS ON BEDDING PLANE OF SANDSTONE FORMING BEDROCK OF HYDROPOWER STATION DAM IN LABORATORY |
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| BAI Yongyan,NIE Dexin.LARGE SHEAR TESTS ON BEDDING PLANE OF SANDSTONE FORMING BEDROCK OF HYDROPOWER STATION DAM IN LABORATORY[J].chinese journal of theoretical and applied mechanics,2007,15(3):380-383. |
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| Authors: | BAI Yongyan NIE Dexin |
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| Institution: | College of Environment and Civil engineering,Chengdu University of Technology,Chengdu 610059 |
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| Abstract: | Actual values of shear strength parameters are important to rock mass as bedrock foundation of hydropower station dam.This paper presents large shear tests to measure the shear strength parameter values of the bedding planes sandstone in laboratory.The sandstone is excavated from the bedrock of a hydropower station dam.By means of the large shear tests,the characters of shear strength about sandstone structural planes are examined.Therefore good results are obtained.The tests show that the characters of the shear deformation curves are strain hardening and the displacements are up to 8.9 mm～44.5 mm before reaching to the peak points of shear strength.At the same time,the basic friction angle of the bedding plane is 31.4 °.The average undulant angle of the bedding is 6.3°. |
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| Keywords: | Bedding plane Sandstone Shear tests Laboratory |
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