淮南望风岗矿初始地应力场反演分析
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摘要
了解矿区初始地应力场分布规律是进行巷道设计、支护计算和稳定分析的前提条件。依据淮南望风岗矿区现场地应力测试资料,对初始地应力场进行反演分析。通过采用具备全局优化能力的变参数DCD(dynamic canonical descent)算法,避免了非线性反演中一般优化算法仅收敛到局部最小值的状态,提高了反演算法的可靠度;通过在优化反演的程序中,调用ABAQUS进行有限元计算,提高了计算分析速度。对实测点的反演值与现场实测值进行了比较,两者在量值及其方向上接近,表明变参数DCD算法显示出了良好的非线性反演能力,较合理的给出了初始地应力场的分布规律。
The understanding of initial geostress field distribution law is the precondition for the design of mine roadway and its supporting calculation and stability analysis. According to the measured geostress data of Wangfenggang mine in Huainan,the back analysis of initial geostress field was made. In the nonlinear back analysis,a mutative dynamic canonical descent( DCD) algorithm with capability of global optimization was introduced to avoid the convergence to a local minimum value,so the reliability of back analysis was improved. ABAQUS software was called for finite element calculation in the optimal back analysis program,the speed of back analysis was improved. The comparison be-tween computed and measured geostress values of measuring points was made,the result showed that the two was similar in direction and value,this demonstrated that mutative DCD algorithm is a good nonlinear back analysis method which can reasonably give distribution law of initial geostress field.
The understanding of initial geostress field distribution law is the precondition for the design of mine roadway and its supporting calculation and stability analysis. According to the measured geostress data of Wangfenggang mine in Huainan,the back analysis of initial geostress field was made. In the nonlinear back analysis,a mutative dynamic canonical descent( DCD) algorithm with capability of global optimization was introduced to avoid the convergence to a local minimum value,so the reliability of back analysis was improved. ABAQUS software was called for finite element calculation in the optimal back analysis program,the speed of back analysis was improved. The comparison be-tween computed and measured geostress values of measuring points was made,the result showed that the two was similar in direction and value,this demonstrated that mutative DCD algorithm is a good nonlinear back analysis method which can reasonably give distribution law of initial geostress field.
引文
[1]许传华,刁虎,任青文,等.紫金山金铜矿初始地应力场反演分析[J].岩土力学,2009,2(30):425-428.
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[6]徐果明.反演理论及其应用[M].北京:地震出版社,2006.
[7]邱祥波,李术才,李树枕.三维地应力回归分析方法与工程应用[J].岩石力学与工报,2002,22(10):1613-1617.
[8]朱伯芳.岩体初始地应力反分析[J].水利学报,1994(10):30-35.
[9]张奇华,钟作武,龚壁新,等.施加边界位移产生纯剪应力及反分析应用[J].长江科学院院报,2000,17(2):34-36.
[10]程宾,王水林,李春光.采用位移边界条件拟合初始地应力场的研究[J].矿业研究与开发,2006,26(1):28-31.
[11]刘允芳,刘元坤.水压致裂法三维地应力测量方法的研究[J].地壳形变与地震,1999,19(3):64-71.
[12]蒲文龙,张宏伟,郭守泉.深部地应力实测与巷道稳定性研究[J].矿山压力与顶板管理,2005,22(1):49-51.
[13]Bousson K,Correia S.D.Optimization algorithm based on densification and dynamic canonical descent[J].Journal of Computational and Applied Mathematics,2006(191):269-279.
[2]柴贺军,刘浩吾,王明华.大型电站坝区应力场三维弹塑性有限元模拟与拟合[J].岩石力学与工程学报,2002,21(9):1314-1318.
[3]付成华,汪卫明,陈胜宏.溪洛渡水电站坝区初始地应力场反演分析研究[J].岩石力学与工程学报,2006,25(11):2305-2312.
[4]易达,徐明毅,陈胜宏,等.人工神经网络在岩体初始应力场反演中的应用[J].岩土力学,2004,25(69):43-946.
[5]许传华,任青文,郑治,等.索风营水电站地下硐室岩体力学参数的位移反分析[J].岩土工程学报,2006,28(11):1981-1985.
[6]徐果明.反演理论及其应用[M].北京:地震出版社,2006.
[7]邱祥波,李术才,李树枕.三维地应力回归分析方法与工程应用[J].岩石力学与工报,2002,22(10):1613-1617.
[8]朱伯芳.岩体初始地应力反分析[J].水利学报,1994(10):30-35.
[9]张奇华,钟作武,龚壁新,等.施加边界位移产生纯剪应力及反分析应用[J].长江科学院院报,2000,17(2):34-36.
[10]程宾,王水林,李春光.采用位移边界条件拟合初始地应力场的研究[J].矿业研究与开发,2006,26(1):28-31.
[11]刘允芳,刘元坤.水压致裂法三维地应力测量方法的研究[J].地壳形变与地震,1999,19(3):64-71.
[12]蒲文龙,张宏伟,郭守泉.深部地应力实测与巷道稳定性研究[J].矿山压力与顶板管理,2005,22(1):49-51.
[13]Bousson K,Correia S.D.Optimization algorithm based on densification and dynamic canonical descent[J].Journal of Computational and Applied Mathematics,2006(191):269-279.
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