水电工程坝址区构造应力场三维数值反演
|
摘要
以水电工程实例为背景,在现场调查和地应力测量的基础上,采用三维数值技术对水电站坝址区小范围内构造应力场进行了反演分析,通过对三维模型施加不同量值、不同方向的边界载荷,对比分析应力拟合点处的计算主应力与实测主应力之间的差别,从而得到最合理的边界载荷的量值和方向,即为坝址区构造应力场的量值和方向。计算结果表明:水电站坝址区构造应力场σ1方向为S50°-60°E,量值为6～7MPa;σ3方向为N50°-60°E,量值为3～4MPa。反演计算得到的坝址区构造应力场方向与区域应力场方向吻合,主应力量值也在合理范围内。
A back analysis for tectonic stress field in dam site of hydropower project is implemented by using three-dimensional FEM base on locale investigation and stress testing.It can be find out the reasonable numerical values and direction of boundary loads by contrasting the principal stresses between calculation and tested in-situ at the points for stress fitting by means of applying boundary loads with a different values and directions to three-dimensional model.The results from back analysis are regarded as the value and the direction of tectonic stress field in this region.The results show that the major principal stress σ1 is 6-7 MPa and its direction is S50°-60°E and minor principal stress σ3 is 3-4 MPa in direction of N50°-60°E in dam site of hydropower station.
A back analysis for tectonic stress field in dam site of hydropower project is implemented by using three-dimensional FEM base on locale investigation and stress testing.It can be find out the reasonable numerical values and direction of boundary loads by contrasting the principal stresses between calculation and tested in-situ at the points for stress fitting by means of applying boundary loads with a different values and directions to three-dimensional model.The results from back analysis are regarded as the value and the direction of tectonic stress field in this region.The results show that the major principal stress σ1 is 6-7 MPa and its direction is S50°-60°E and minor principal stress σ3 is 3-4 MPa in direction of N50°-60°E in dam site of hydropower station.
引文
[1]张倬元,王士天,王兰生.工程地质分析原理[M].北京:地质出版社,1994.Zhang Zhuo-yuan,Wang Shi-tian,Wang Lan-sheng.Principle of Engineering Geology Analysis[M].Beijing:Geological Publishing House,1994.
[2]詹文欢,钟建强,丘学林,等.南海及邻域现代构造应力场的数值模拟[J].华南地震,1992,12(3):11-20.Zhan Wen-huan,Zhong Jian-qiang,Qiu Xue-lin,et al.A Numerical Simulation of the Recent Tectonic StressField in South China Sea and Its Adjacent Areas[J].South China Journal of Seismology,1992,12(3):11-20.
[3]曹超,雷怀彦,翁梅洪.构造应力场数值模拟在望儿山金矿中的应用[J].黄金,2008,29(10):12-15.Cao Chao,Lei Huai-yan,Weng Mei-hong.Application of Numerical Simulation for TectonicStress Field in Wang’ershan Gold Mine[J].Gold,2008,29(10):12-15.
[4]王连捷,吴珍汉,王薇,等.青藏高原中段现今构造应力场的数值模拟[J].地质力学学报,2006,12(2):140-149.Wang Lian-jie,Wu Zhen-han,Wang Wei,et al.Numerical Modeling of the Present Tectonic StressField in the Central Qinghai-Tibet Plateau[J].Journalof Geomechanics,2006,12(2):140-149.
[5]陈蜀俊,姚运生,曾佐勋,等.三峡库首区蓄水前后构造应力场三维数值模拟研究[J].岩石力学与工程学报,2005,24(增刊2):5611-5618.Chen Shu-jun,Yao Yun-sheng,Zeng Zuo-xun,et al.Study on Numerical Simulation of Tectonic Stress FieldBefore and After Reservoir Impounding in the HeadArea of the Three Gorges[J].Chinese Journal of RockMechanics and Engineering,2005,24(Sup.2):5611-5618.
[6]陈晓利,陈国光,叶洪.渤海海域现代构造应力场的数值模拟[J].地震地质,2005,27(2):289-297.Chen Xiao-li,Chen Guo-guang,Ye Hong.Amathematical Simulation for the Tectonic Stress Fieldof the Bohai Sea Area[J].Seismology and Geology,2005,27(2):289-297.
[7]刘素梅,徐礼华.丹江口水库区构造应力场的数值模拟[J].岩石力学与工程学报,2004,23(23):4017-4021.Liu Su-mei,Xu Li-hua.Numerical Stimulation ofTectonic Stress Field at Danjiangkou Reservoir Area[J].Chinese Journal of Rock Mechanics andEngineering,2004,23(23):4017-4021.
[8]司荣军,王春秋,程国强.大安山矿后槽构造应力场数值模拟研究[J].岩土力学,2006,27(增刊):167-170.Si Rong-jun,Wang Chun-qiu,Cheng Guo-qiang.Numerical Simulation Study on Tectonic Stress Field ofHoucao Area in Da’anshan Coal Mine[J].Rock andSoil Mechanics,2006,27(Sup.):167-170.
[9]何江达,谢红强,王启智,等.官地水电站坝址区初始地应力场反演分析[J].岩土工程学报,2009,31(2):166-171.He Jiang-da,Xie Hong-qiang,Wang Qi-zhi,et al.Inversion Analysis of Initial Geostress in Dam Site ofGuandi Hydropower Project[J].Chinese Journal ofGeotechnical Engineering,2009,31(2):166-171.
[10]付玉华,王兴明,袁海平.构造应力场边界载荷反演的有限元逆逼法[J].岩土力学,2009,30(6):1850-1855.Fu Yu-hua,Wang Xing-ming,Yuan Hai-ping.FiniteElement Inverse Analysis of Boundary Load forTectonic Stress Field[J].Rock and Soil Mechanics,2009,30(6):1850-1855.
[11]周洪福,聂德新,陈津民.深部破碎岩体变形模量的一种新型试验方法及工程应用[J].吉林大学学报:地球科学版,2010,40(6):1390-1394.Zhou Hong-fu,Nie De-xin,Chen Jin-min.A NewExperimentation Method and an Example ofDeformation Modulus for Deep Cracked Rock Mass[J].Journal of Jilin University:Earth ScienceEdition,2010,40(6):1390-1394.
[2]詹文欢,钟建强,丘学林,等.南海及邻域现代构造应力场的数值模拟[J].华南地震,1992,12(3):11-20.Zhan Wen-huan,Zhong Jian-qiang,Qiu Xue-lin,et al.A Numerical Simulation of the Recent Tectonic StressField in South China Sea and Its Adjacent Areas[J].South China Journal of Seismology,1992,12(3):11-20.
[3]曹超,雷怀彦,翁梅洪.构造应力场数值模拟在望儿山金矿中的应用[J].黄金,2008,29(10):12-15.Cao Chao,Lei Huai-yan,Weng Mei-hong.Application of Numerical Simulation for TectonicStress Field in Wang’ershan Gold Mine[J].Gold,2008,29(10):12-15.
[4]王连捷,吴珍汉,王薇,等.青藏高原中段现今构造应力场的数值模拟[J].地质力学学报,2006,12(2):140-149.Wang Lian-jie,Wu Zhen-han,Wang Wei,et al.Numerical Modeling of the Present Tectonic StressField in the Central Qinghai-Tibet Plateau[J].Journalof Geomechanics,2006,12(2):140-149.
[5]陈蜀俊,姚运生,曾佐勋,等.三峡库首区蓄水前后构造应力场三维数值模拟研究[J].岩石力学与工程学报,2005,24(增刊2):5611-5618.Chen Shu-jun,Yao Yun-sheng,Zeng Zuo-xun,et al.Study on Numerical Simulation of Tectonic Stress FieldBefore and After Reservoir Impounding in the HeadArea of the Three Gorges[J].Chinese Journal of RockMechanics and Engineering,2005,24(Sup.2):5611-5618.
[6]陈晓利,陈国光,叶洪.渤海海域现代构造应力场的数值模拟[J].地震地质,2005,27(2):289-297.Chen Xiao-li,Chen Guo-guang,Ye Hong.Amathematical Simulation for the Tectonic Stress Fieldof the Bohai Sea Area[J].Seismology and Geology,2005,27(2):289-297.
[7]刘素梅,徐礼华.丹江口水库区构造应力场的数值模拟[J].岩石力学与工程学报,2004,23(23):4017-4021.Liu Su-mei,Xu Li-hua.Numerical Stimulation ofTectonic Stress Field at Danjiangkou Reservoir Area[J].Chinese Journal of Rock Mechanics andEngineering,2004,23(23):4017-4021.
[8]司荣军,王春秋,程国强.大安山矿后槽构造应力场数值模拟研究[J].岩土力学,2006,27(增刊):167-170.Si Rong-jun,Wang Chun-qiu,Cheng Guo-qiang.Numerical Simulation Study on Tectonic Stress Field ofHoucao Area in Da’anshan Coal Mine[J].Rock andSoil Mechanics,2006,27(Sup.):167-170.
[9]何江达,谢红强,王启智,等.官地水电站坝址区初始地应力场反演分析[J].岩土工程学报,2009,31(2):166-171.He Jiang-da,Xie Hong-qiang,Wang Qi-zhi,et al.Inversion Analysis of Initial Geostress in Dam Site ofGuandi Hydropower Project[J].Chinese Journal ofGeotechnical Engineering,2009,31(2):166-171.
[10]付玉华,王兴明,袁海平.构造应力场边界载荷反演的有限元逆逼法[J].岩土力学,2009,30(6):1850-1855.Fu Yu-hua,Wang Xing-ming,Yuan Hai-ping.FiniteElement Inverse Analysis of Boundary Load forTectonic Stress Field[J].Rock and Soil Mechanics,2009,30(6):1850-1855.
[11]周洪福,聂德新,陈津民.深部破碎岩体变形模量的一种新型试验方法及工程应用[J].吉林大学学报:地球科学版,2010,40(6):1390-1394.Zhou Hong-fu,Nie De-xin,Chen Jin-min.A NewExperimentation Method and an Example ofDeformation Modulus for Deep Cracked Rock Mass[J].Journal of Jilin University:Earth ScienceEdition,2010,40(6):1390-1394.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心