利用孔间CT成像对喀斯特岩体结构、电站坝基渗漏与稳定性研究
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摘要
岩溶水电站坝基受岩体中发育的溶洞、溶蚀裂隙带及构造破碎带等岩体缺陷的控制,容易产生塌陷、渗漏,导致电站工程变形、失稳。岩溶发育与碳酸盐岩的岩体结构改变关系十分密切,因此,对水电站坝基岩体缺陷的准确诊断意义重大。本文利用孔间电磁波透视及CT成像技术,对地下隐伏碳酸盐岩岩体结构的非均匀性,溶蚀裂隙带分界面,裂隙结构体、裂隙充填物性质及几何空间形态等进行了数字描述和刻画。并结合广西某水电站坝基碳酸盐岩岩体结构的自然特性,岩体结构变化特征的实测数据,进一步分析在工程作用下应力分布状态,岩体变形破坏规律,预测和判定坝基渗漏和稳定性,进而合理制定有效处治措施。
hydropower station dam Foundation rock of karst caves, karst fracture zone and tectonic development of broken rock such as defect control, prone to subsidence, leakage, resulting in power plant engineering deformation and instability. Karst development and structural change of carbonate rock is very closely connected, therefore, accurate diagnosis of the hydroelectric power station dam Foundation rock mass defect was significant. This use of perspective and CT Imaging of electromagnetic wave between holes, underground concealed carbonate rock structures in non-uniformity, corrosion crack belt interface, fractured structure, nature of crack filler and geometric spatial form for digital descriptions and characterizations. Combined with a hydropower station dam Foundation in Guangxi natural properties of carbonate rock structures, changing characteristics of rock mass structure of the measured data, further analysis in engineering under the action of stress distribution, deformation law of rock, forecast and found seepage of dam Foundation and stability and thus reasonable to develop effective treatment measures.
hydropower station dam Foundation rock of karst caves, karst fracture zone and tectonic development of broken rock such as defect control, prone to subsidence, leakage, resulting in power plant engineering deformation and instability. Karst development and structural change of carbonate rock is very closely connected, therefore, accurate diagnosis of the hydroelectric power station dam Foundation rock mass defect was significant. This use of perspective and CT Imaging of electromagnetic wave between holes, underground concealed carbonate rock structures in non-uniformity, corrosion crack belt interface, fractured structure, nature of crack filler and geometric spatial form for digital descriptions and characterizations. Combined with a hydropower station dam Foundation in Guangxi natural properties of carbonate rock structures, changing characteristics of rock mass structure of the measured data, further analysis in engineering under the action of stress distribution, deformation law of rock, forecast and found seepage of dam Foundation and stability and thus reasonable to develop effective treatment measures.
引文
[1]孙广忠.岩体结构力学[M].北京:科学出版社,1988.Sun GZ.Rock structural mechanics[M].Beijing:Science Press,1988.
[2]谷德振,黄鼎成.岩体结构的分类及其质量系数的确定[J].水文地质工程地质,1979,(2):8-13.Gu DZ,Huang DC.The rock mass structure classification and quality coefficient[J].Hydrogeology and Engineering Geology,1979,(2):8-13.
[3]周瑞光.岩体结构面形态的力学效应[J].工程勘察,1981,(1):46-51.Zhou RG.Effect of rock structural surface morphology of mechanics[J].Engineering survey,1981,(1):46-51.
[4]谢和平,陈忠辉.岩石力学[M].北京:科学出版社,2004.Xie HP,Chen ZH.Rock mechanics[M].Beijing:Science Press,2004.
[5]徐卫亚.三峡工程坝基岩体结构研究[J].勘察科学技术,1993,6:21-25.Xu WY.Three Gorges dam foundation rock mass structure[J].Investigation Science and Technology,1993,6:21-25.
[6]周维垣.岩体工程结构的稳定性[J].岩石力学与工程学报,2010,29(9):1729-1753.Zhou WY.Rock structure stability[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(9):1729-1753.
[7]蒋忠诚,袁道先.表层岩溶带的岩溶动力学特征及其环境和资源意义[J].地球学报,1999,20(3):302-308.Jiang ZC,Yuan DX.Dynamics features of the epikarst zone and their significance in environments and resources[J].Journal of Earth,1999,20(3):302-308.
[8]黎华清,徐远光,甘伏平,等.孔间电磁波CT法在左江电站火成岩坝基风化结构评价中的应用[J].岩土力学,2010,31(S1):430-434.Li HQ,Xu YG,Gan FP,et al.Application of cross-well electromagnetic wave CT technique to evaluating weathered igneous rock dam structure of Zuojiang river power station[J].Rock and Soil Mechanics,2010,31(S1):430-434.
[9]邓争荣,熊永红,蔡加兴.钻孔电磁波CT在岩溶探测中的应用[J].长江工程职业技术学院学报,2004,21(4):32-34.Deng ZR,Xiong YH,Cai JX.Application of drilling electromagnetic wave CT in karst exploration[J].Journal of Changjiang Engineering Vocational College,2004,21(4):32-34.
[10]《钻孔电磁波法》编写组.钻孔电磁波法[M].北京:地质出版社,1982.The Group of Electromagnetic Method.Electromagnetic methods in borehole[M].Beijing:Geological Publishing House,1982.
[11]郭贵安,魏柏林.井间电磁波CT技术在溶洞探测中的应用[J].华南地震,1999,19(4):28-34.Guo GA,Wei BL.Prospecting corroded cavities using cross-section electromagnetic tomographic technique between boreholes[J].South China Journal of Seismology,1999,19(4):28-34.
[12]丁卫华,仵彦卿,蒲毅彬,等.基于X射线CT的岩石内部裂隙宽度测量[J].岩石力学与工程学报,2003,22(9):1421-1425.Ding WH,Wu YQ,Pu YB,et al.Based on X ray CT rock fracture width measurement[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(9):1421-1425.
[13]杨文采.地球物理反演与地震层析成像[M].北京:地质出版社,1989:153-161.Yang WC.Geophysical inversion and seismic tomography[M].Beijing:Geological Publishing House,1989:153-161.
[14]高星.地震层析成像研究的回顾与展望[J].地球物理学进展,2000,15(4):42-44.Gao X.Advance and review in seismic tomography research[J].Progress in Geophysics,2000,15(4):42-44.
[2]谷德振,黄鼎成.岩体结构的分类及其质量系数的确定[J].水文地质工程地质,1979,(2):8-13.Gu DZ,Huang DC.The rock mass structure classification and quality coefficient[J].Hydrogeology and Engineering Geology,1979,(2):8-13.
[3]周瑞光.岩体结构面形态的力学效应[J].工程勘察,1981,(1):46-51.Zhou RG.Effect of rock structural surface morphology of mechanics[J].Engineering survey,1981,(1):46-51.
[4]谢和平,陈忠辉.岩石力学[M].北京:科学出版社,2004.Xie HP,Chen ZH.Rock mechanics[M].Beijing:Science Press,2004.
[5]徐卫亚.三峡工程坝基岩体结构研究[J].勘察科学技术,1993,6:21-25.Xu WY.Three Gorges dam foundation rock mass structure[J].Investigation Science and Technology,1993,6:21-25.
[6]周维垣.岩体工程结构的稳定性[J].岩石力学与工程学报,2010,29(9):1729-1753.Zhou WY.Rock structure stability[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(9):1729-1753.
[7]蒋忠诚,袁道先.表层岩溶带的岩溶动力学特征及其环境和资源意义[J].地球学报,1999,20(3):302-308.Jiang ZC,Yuan DX.Dynamics features of the epikarst zone and their significance in environments and resources[J].Journal of Earth,1999,20(3):302-308.
[8]黎华清,徐远光,甘伏平,等.孔间电磁波CT法在左江电站火成岩坝基风化结构评价中的应用[J].岩土力学,2010,31(S1):430-434.Li HQ,Xu YG,Gan FP,et al.Application of cross-well electromagnetic wave CT technique to evaluating weathered igneous rock dam structure of Zuojiang river power station[J].Rock and Soil Mechanics,2010,31(S1):430-434.
[9]邓争荣,熊永红,蔡加兴.钻孔电磁波CT在岩溶探测中的应用[J].长江工程职业技术学院学报,2004,21(4):32-34.Deng ZR,Xiong YH,Cai JX.Application of drilling electromagnetic wave CT in karst exploration[J].Journal of Changjiang Engineering Vocational College,2004,21(4):32-34.
[10]《钻孔电磁波法》编写组.钻孔电磁波法[M].北京:地质出版社,1982.The Group of Electromagnetic Method.Electromagnetic methods in borehole[M].Beijing:Geological Publishing House,1982.
[11]郭贵安,魏柏林.井间电磁波CT技术在溶洞探测中的应用[J].华南地震,1999,19(4):28-34.Guo GA,Wei BL.Prospecting corroded cavities using cross-section electromagnetic tomographic technique between boreholes[J].South China Journal of Seismology,1999,19(4):28-34.
[12]丁卫华,仵彦卿,蒲毅彬,等.基于X射线CT的岩石内部裂隙宽度测量[J].岩石力学与工程学报,2003,22(9):1421-1425.Ding WH,Wu YQ,Pu YB,et al.Based on X ray CT rock fracture width measurement[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(9):1421-1425.
[13]杨文采.地球物理反演与地震层析成像[M].北京:地质出版社,1989:153-161.Yang WC.Geophysical inversion and seismic tomography[M].Beijing:Geological Publishing House,1989:153-161.
[14]高星.地震层析成像研究的回顾与展望[J].地球物理学进展,2000,15(4):42-44.Gao X.Advance and review in seismic tomography research[J].Progress in Geophysics,2000,15(4):42-44.
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