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层状裂隙岩体有自由面的渗流分析

Analysis of Seepage with Free Surface in Inter-bed Layered Fractured Rock Masses

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【作者】 卢刚陈静周志芳

【Author】 LU Gang1 CHEN Jing2 ZHOU Zhifang3 (1.Jiangsu East China Construction Group Co.,LTD,Nanjing 210007,China;2.Hydrology and Water Resource Survey Bureau of Jiangsu Province,Nanjing 210029,China;3.College of Civil Engineering,Hohai University,Nanjing 210098,China)

【机构】 江苏华东建设集团江苏省水文水资源勘测局河海大学土木工程学院

【摘要】 针对互层状裂隙岩体中的渗流问题,总结了互层状裂隙岩体中的层面裂隙和构造裂隙发育规律,提出了一种互层状岩体中裂隙网络生成方法并基于双重介质饱和—非饱和渗流模型分析了软岩中存在和不存在切层裂隙两种情况下自由面渗流问题,讨论了层面裂隙、层间裂隙和切层裂隙隙宽对自由面的影响。结果表明,在互层状裂隙岩体有自由面渗流中可能出现多层自由面的现象,取决于层间、切层及层面裂隙隙宽的组合。

【Abstract】 For the seepage problems in inter-bed layered fractured rock masses,the development rules of bed fractures and tectonic fractures in inter-bed layered rock masses are studied,and a fracture network generation method is put forward,and then the seepage problems with free surface is analyzed with double medium model with considering the unbounded fracture or not,at last the free surface variation caused by the varying aperture of bed fracture,bounded fracture and unbounded fracture are discussed.The analysis shows that there are probably more than one free surface existing in the seepage problem with free surface in inter-bed layered fractured rock masses,and which depends on the aperture of bed fracture,bounded fracture and unbounded fracture.

【基金】 国家自然科学基金资助项目(50579012)
  • 【文献出处】 水电能源科学 ,Water Resources and Power , 编辑部邮箱 ,2009年02期
  • 【分类号】TV223.4
  • 【被引频次】3
  • 【下载频次】192
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