褶皱构造应力场及其演化
|
摘要
为了弄清褶皱构造形成过程中应力场的分布及动态演化状况,运用弹性力学理论对褶皱构造形成过程中的应力场进行了分析并对其动态演化进行了探索。通过分析给出了单一岩层褶皱启动时应力场的解析式;根据解析式求出了褶皱波长与岩层厚度、刚度模量之间的关系,从而揭示了褶皱等距性的成因;同时研究了褶皱驱动应力与岩层厚度、刚度模量以及褶皱波长之间的关系,从而指出褶皱作为"古地应力记录仪"用以测量古地应力的可能性。通过对不同结合状态复合岩层的分析,揭示了平行褶皱、相似褶皱、不协调褶皱的成因;在单一岩层褶皱启动时应力场解析式的基础上,提出了能体现褶皱应力场演化状况的解析式并做了部分求证,进而对褶皱应力场的演化做了分析。
The theory of elastic mechanics is applied to find out distribution and dynamic evolution of stress field in the forming process of fold structure. The analytical expression of stress field when a single fold starts is deduced, through which the relationship between fold wavelength and the thickness and stiffness modulus of rock formation is obtained, and the cause of fold equidistant distribution is revealed. The relationship between fold driving stress and rock layer thickness, stiffness modulus and fold wavelength is obtained, and the possibility of fold as "paleogeostress recorder" to measure paleogeostress is proposed. Based on analysis of the composite strata in different binding states, the causes of parallel fold, similar fold and incongruous fold are revealed. According to the analytical expression of the stress field when a single fold starts, an analytical expression reflecting the evolution of fold stress field is proposed and partially verified, and then the evolution of the fold stress field is analyzed.
The theory of elastic mechanics is applied to find out distribution and dynamic evolution of stress field in the forming process of fold structure. The analytical expression of stress field when a single fold starts is deduced, through which the relationship between fold wavelength and the thickness and stiffness modulus of rock formation is obtained, and the cause of fold equidistant distribution is revealed. The relationship between fold driving stress and rock layer thickness, stiffness modulus and fold wavelength is obtained, and the possibility of fold as "paleogeostress recorder" to measure paleogeostress is proposed. Based on analysis of the composite strata in different binding states, the causes of parallel fold, similar fold and incongruous fold are revealed. According to the analytical expression of the stress field when a single fold starts, an analytical expression reflecting the evolution of fold stress field is proposed and partially verified, and then the evolution of the fold stress field is analyzed.
引文
[1] 王连捷,张利容,袁嘉音,等.地应力与油气运移[J].地质力学学报,1996,2(2):3-10.WANG Lianjie,ZHANG Lirong,YUAN Jiayin,et al.Crustal stress and oil and gas migration[J].Journal of Geomechanics,1996,2(2):3-10.(in Chinese with English abstract)
[2] 王连捷,孙宝珊,王薇,等.地应力对油气运移的驱动作用[J].地质力学学报,2011,17(2):132-143.WANG Lianjie,SUN Baoshan,WANG Wei,et al.Driving effect of the crustal stress on petroleum migration[J].Journal of Geomechanics,2011,17(2):132-143.(in Chinese with English abstract)
[3] 宋洪亮,徐守余,郑丁.构造应力场与油气运移[J].断块油气田,2007,14(5):12-14.SONG Hongliang,XU Shouyu,ZHENG Ding.Tectonic stress field and hydrocarbon migration[J].Fault-Block Oil & Gas Field,2007,14(5):12-14.(in Chinese with English abstract)
[4] 李文杰,梁金城,陆小平,等.广西老堡铅锌矿褶皱形成机制及其控矿规律[J].桂林工学院学报,2009,29(2):242-246.LI Wenjie,LIANG Jincheng,LU Xiaoping,et al.Formation mechanism and ore-controlling rules of the folds in laobao Pb-Zn deposit,Guangxi[J].Journal of Guilin University of Technology,2009,29(2):242-246.(in Chinese with English abstract)
[5] 钟道崇,高必松.褶皱控矿与找矿勘探的探讨[J].甘肃地质,1991,(2):89-95.ZHONG Daochong,GAO Bisong.On the tentative approach of the fold control ore & prospection[J].Gansu Geology,1991,(2):89-95.(in Chinese with English abstract)
[6] 汪吉林,李仁东,姜波.构造应力场对煤与瓦斯突出的控制作用[J].煤炭科学技术,2008,36(4):47-50.WANG Jilin,LI Rendong,JIANG Bo.Control function of tectonic stress field to coal and gas outburst[J].Coal Science and Technology,2008,36(4):47-50.(in Chinese with English abstract)
[7] 孙叶,谭成轩.构造应力场研究与实践[J].地质力学学报,2001,7(3):254-258.SUN Ye,TAN Chengxuan.Research and practice on tectonic stress field[J].Journal of Geomechanics,2001,7(3):254-258.(in Chinese with English abstract)
[8] 赵玉琛.宣泾地区褶皱构造的节理谱分析和应力场研究[J].安徽地质,1992,2(2):15-24.ZHAO Yuchen.Stress field study and joint frequency analysis of folds in Xuanjing area[J].Geology of Anhui,1992,2(2):15-24.(in Chinese with English abstract)
[9] 莫时旭,杨荣丰,黄昔容.涟邵煤田金竹山向斜构造应力场探讨[J].湖南地质,1998,17(2):76-80.MO Shixu,YANG Rongfeng,HUANG Xirong.A discussion of the structural stress field in Jinzhushan Syncline,Lianshao coalfield[J].Hunan Geology,1998,17(2):76-80.(in Chinese with English abstract)
[10] 付京斌.煤层褶皱构造形成演化应力场分布特征数值模拟[J].煤矿安全,2010,40(1):56-59.FU Jingbin.Numerical simulation of stress field distribution characteristics for evolution of coal seam fold structure[J].Safety in Coal Mines,2010,40(1):56-59.(in Chinese with English abstract)
[11] 杨玉山,沈晓华,邹乐君.褶皱变形应力场对断裂控制作用的有限元模拟[J].科技通报,2006,22(5):616-621.YANG Yushan,SHEN Xiaohua,ZOU Lejun.Finite element simulation on control effect of deformation stress field of folds on fractures[J].Bulletin of Science and Technology,2006,22(5):616-621.(in Chinese)
[12] 陈国祥,窦林名,乔中栋,等.褶皱区应力场分布规律及其对冲击矿压的影响[J].中国矿业大学学报,2008,37(6):751-755.CHEN Guoxiang,DOU Linming,QIAO Zhongdong,et al.The stress field distribution in folding structure areas and its impaction on rock burst[J].Journal of China University of Mining & Technology,2008,37(6):751-755.(in Chinese with English abstract)
[13] 徐芝纶.弹性力学[M].北京:人民教育出版社,1978.XU Zhilun.Elastic mechanics of[M].Beijing:The People’s Education Publishing Company,1978.(in Chinese)
[14] 杨桂通.弹塑性力学[M].北京:人民教育出版社,1980.YANG Guitong.Elasto mechanics[M].Beijing:The People’s Education Publishing Company,1980.(in Chinese)
[15] 叶柏龙,何绍勋,彭恩生.有限不等厚介质中单层褶皱的理论及模拟实验研究[J].大地构造与成矿学,1992,16(2):211-213.YE Bailong,HE Shaoxun,PENG Ensheng.Theoretical and experimental Studies on Folds of single layer intercalated between limitedly and differently thick media[J].Geotectonica et Metallogenia,1992,16(2):211-213.(in Chinese with English abstract)
[16] 叶柏龙,喻爱南.主波长理论在地质勘探中的应用[J].中南工业大学学报,1995,26(2):148-152.YE Bailong,YU Aiguo.Application of the dominant wavelength theory to the geological exploring[J].Journal of Central South University of Technology,1995,26(2):148-152.(in Chinese with English abstract)
[2] 王连捷,孙宝珊,王薇,等.地应力对油气运移的驱动作用[J].地质力学学报,2011,17(2):132-143.WANG Lianjie,SUN Baoshan,WANG Wei,et al.Driving effect of the crustal stress on petroleum migration[J].Journal of Geomechanics,2011,17(2):132-143.(in Chinese with English abstract)
[3] 宋洪亮,徐守余,郑丁.构造应力场与油气运移[J].断块油气田,2007,14(5):12-14.SONG Hongliang,XU Shouyu,ZHENG Ding.Tectonic stress field and hydrocarbon migration[J].Fault-Block Oil & Gas Field,2007,14(5):12-14.(in Chinese with English abstract)
[4] 李文杰,梁金城,陆小平,等.广西老堡铅锌矿褶皱形成机制及其控矿规律[J].桂林工学院学报,2009,29(2):242-246.LI Wenjie,LIANG Jincheng,LU Xiaoping,et al.Formation mechanism and ore-controlling rules of the folds in laobao Pb-Zn deposit,Guangxi[J].Journal of Guilin University of Technology,2009,29(2):242-246.(in Chinese with English abstract)
[5] 钟道崇,高必松.褶皱控矿与找矿勘探的探讨[J].甘肃地质,1991,(2):89-95.ZHONG Daochong,GAO Bisong.On the tentative approach of the fold control ore & prospection[J].Gansu Geology,1991,(2):89-95.(in Chinese with English abstract)
[6] 汪吉林,李仁东,姜波.构造应力场对煤与瓦斯突出的控制作用[J].煤炭科学技术,2008,36(4):47-50.WANG Jilin,LI Rendong,JIANG Bo.Control function of tectonic stress field to coal and gas outburst[J].Coal Science and Technology,2008,36(4):47-50.(in Chinese with English abstract)
[7] 孙叶,谭成轩.构造应力场研究与实践[J].地质力学学报,2001,7(3):254-258.SUN Ye,TAN Chengxuan.Research and practice on tectonic stress field[J].Journal of Geomechanics,2001,7(3):254-258.(in Chinese with English abstract)
[8] 赵玉琛.宣泾地区褶皱构造的节理谱分析和应力场研究[J].安徽地质,1992,2(2):15-24.ZHAO Yuchen.Stress field study and joint frequency analysis of folds in Xuanjing area[J].Geology of Anhui,1992,2(2):15-24.(in Chinese with English abstract)
[9] 莫时旭,杨荣丰,黄昔容.涟邵煤田金竹山向斜构造应力场探讨[J].湖南地质,1998,17(2):76-80.MO Shixu,YANG Rongfeng,HUANG Xirong.A discussion of the structural stress field in Jinzhushan Syncline,Lianshao coalfield[J].Hunan Geology,1998,17(2):76-80.(in Chinese with English abstract)
[10] 付京斌.煤层褶皱构造形成演化应力场分布特征数值模拟[J].煤矿安全,2010,40(1):56-59.FU Jingbin.Numerical simulation of stress field distribution characteristics for evolution of coal seam fold structure[J].Safety in Coal Mines,2010,40(1):56-59.(in Chinese with English abstract)
[11] 杨玉山,沈晓华,邹乐君.褶皱变形应力场对断裂控制作用的有限元模拟[J].科技通报,2006,22(5):616-621.YANG Yushan,SHEN Xiaohua,ZOU Lejun.Finite element simulation on control effect of deformation stress field of folds on fractures[J].Bulletin of Science and Technology,2006,22(5):616-621.(in Chinese)
[12] 陈国祥,窦林名,乔中栋,等.褶皱区应力场分布规律及其对冲击矿压的影响[J].中国矿业大学学报,2008,37(6):751-755.CHEN Guoxiang,DOU Linming,QIAO Zhongdong,et al.The stress field distribution in folding structure areas and its impaction on rock burst[J].Journal of China University of Mining & Technology,2008,37(6):751-755.(in Chinese with English abstract)
[13] 徐芝纶.弹性力学[M].北京:人民教育出版社,1978.XU Zhilun.Elastic mechanics of[M].Beijing:The People’s Education Publishing Company,1978.(in Chinese)
[14] 杨桂通.弹塑性力学[M].北京:人民教育出版社,1980.YANG Guitong.Elasto mechanics[M].Beijing:The People’s Education Publishing Company,1980.(in Chinese)
[15] 叶柏龙,何绍勋,彭恩生.有限不等厚介质中单层褶皱的理论及模拟实验研究[J].大地构造与成矿学,1992,16(2):211-213.YE Bailong,HE Shaoxun,PENG Ensheng.Theoretical and experimental Studies on Folds of single layer intercalated between limitedly and differently thick media[J].Geotectonica et Metallogenia,1992,16(2):211-213.(in Chinese with English abstract)
[16] 叶柏龙,喻爱南.主波长理论在地质勘探中的应用[J].中南工业大学学报,1995,26(2):148-152.YE Bailong,YU Aiguo.Application of the dominant wavelength theory to the geological exploring[J].Journal of Central South University of Technology,1995,26(2):148-152.(in Chinese with English abstract)