| 岩体初始地应力场计算模型自动生成与快速反演 |
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| 引用本文： | 刘会波,肖明. 岩体初始地应力场计算模型自动生成与快速反演[J]. 武汉大学学报(工学版), 2009, 42(4) |
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| 作者姓名： | 刘会波 肖明 |
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| 作者单位： | 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072 |
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| 基金项目： | 国家自然科学基金重大研究计划 |
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| 摘 要： | 对AutoCAD进行了面向对象二次开发,利用程序自动读取CAD地形图地面高程并快速生成反映地表起伏变化的三维有限元计算网格模型.采用三维非线性有限元反演回归分析计算方法,提出了三维应力侧压系数函数拟合法,通过三维有限元开挖模拟反演岩体初始地应力场.对蒲石河抽水蓄能电站地下厂房区域初始地应力场进行了反演回归分析,结果表明:实测点地应力拟合较好,该方法计算快速准确,较合理地反映了地形地貌对初始地应力场规律的影响.
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| 关 键 词： | 初始地应力场 CAD二次开发 地形网格自动获取 有限元反演分析 |
Automatically and rapidly modelling and back analysis of initial geotress field in rock mass |
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| LIU Huibo,XIAO Ming. Automatically and rapidly modelling and back analysis of initial geotress field in rock mass[J]. Engineering Journal of Wuhan University, 2009, 42(4) |
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| Authors: | LIU Huibo XIAO Ming |
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| Abstract: | A redevelopment of AutoCAD2008 was done and an object-oriented program was developped that can rapidly and automatically calculate the grid nodes' ground elevations and establish the 3-D finite element model that could reflect the terrain condition.By using 3-D nonliner finite element regression back analysis method,a function of lateral pressure parameter of geostress is put forward and initial geostress field is carried out through 3-D simulation of excavation.The back analysis of initial geostress field of underground house of Pushihe Pumped Storage Power Station is carried out; and the results show that the calculations fitted well with actual geostress and the method is acculate and high-speed and reasonably reflect the influence of landform on initial geostress field. |
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| Keywords: | initial geostress field redevelopment of CAD automatically modelling FEM back analysis |
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