| 危岩裂隙水压力修正计算方法 |
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| 引用本文： | 唐红梅,陈洪凯.危岩裂隙水压力修正计算方法[J].中国地质灾害与防治学报,2008,19(4):86-90. |
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| 作者姓名： | 唐红梅 陈洪凯 |
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| 作者单位： | 重庆交通大学岩土工程研究所,重庆,400074 |
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| 基金项目： | 国家自然科学基金项目
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| 摘 要： | “暴雨状态的裂隙水压力是危岩防治工程设计的控制性荷载”是人所共识的，但“静水压力公式究竟能否直接用于确定危岩裂隙水压力”却是三峡库区地质灾害科技工作者多年来一直关心的重要问题之一。本文通过72组裂隙水压力室内模型试验，对比分析了应用压力计直接测定的裂隙水压力和根据测压管读数由静水压力公式计算的裂隙水压力之间的差异，用到静水压力公式计算危岩裂隙水压力比实际值大30％-50％；通过对静水压力公式引入折减系数，建立了适用于压剪-滑动型危岩和拉剪一倾倒型危岩裂隙水压力的计算式，并建立了折减系数计算方法。所建立的危岩裂隙水压力计算方法的实用性界定在主控结构面开度在0．2～2．0cm之间。
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| 关 键 词： | 岩石力学 裂隙水压力修正计算方法 模型试验 危岩 |
Revised method of water pressure in control fissure of perilous rockmass |
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| TANG Hong-mei,CHEN Hong-kai.Revised method of water pressure in control fissure of perilous rockmass[J].The Chinese Journal of Geological Hazard and Control,2008,19(4):86-90. |
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| Authors: | TANG Hong-mei CHEN Hong-kai |
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| Institution: | TANG Hong-mei, CHEN Hong-kai (Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, China) |
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| Abstract: | It is well known,water pressure in control fissure of perilous rock at rainstorm state belong to control load in engineering design against perilous rock,while whether the static water pressure formula is effective or not in calculating water pressure in control fissure is one of important problems concerned by scholars in the Three Gorges reservoir area for years.72 sets of experiments about water pressure in control fissure have been made,further,authors analyses difference between data through testing directly and calculating in static water pressure formula,then the important conclusion that static water pressure formula isn't effective in calculating directly water pressure calculation in perilous rock is attained,presenting reduction coefficient to static water pressure formula.The authors establish calculating method of water pressure in sliding perilous rock under pressure-shear and toppling perilous rock under tension-shear.These formulas are useful for aperture of control fissure varying between 2.0cm and 0.2cm. |
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| Keywords: | rock mechanics revised method of water pressure in fissures model experiment perilous rock |
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