青藏高原腹地现今地应力测量与应力状态研究
|
摘要
青藏高原腹地现今构造活动强烈,为了解强烈构造活动下的应力背景,我们在五道梁、风火山、雁石坪和安多不同构造部位的四个测点采用压磁应力解除法进行了现场应力实测工作,测量深度12～2 0m .测量结果表明,最大主应力方向总体为北东向,与地质、地震以及大地测量等方面的研究成果基本吻合;最大主应力量值为3 6～6 8MPa(安多测点除外) ,与其他地区测量结果相比,属于中等偏高;安多测点最大主应力方向为北西西向,最大主应力量值为8 1MPa,与其他测点有较大差别,反映了板块缝合带附近现今应力状态的复杂性.
Qinghai-Tibet Plateau is most intensive in tectonic activity. In order to understand the recent state of stress, ground stress surveys were carried out at different structural positions and depths and in different rocks using piezomagnetic stress gauge overcoring method in the central Qinghai-Tibet Plateau. The results of stress measurements indicate that the direction of maximum principal stress is NE. This agrees with the result of the study of geology and earthquake and deformation. The values of maximum principal stress are 3.6～6.8MPa which are high as compared with those obtained elsewhere in China from a viewpoint of regional stress analysis. But the value and the direction of Amdo stress measurement site are different with those of other sites. The direction of maximum principal stress is NWW. The value of maximum principal stress is 8.1 MPa. This also indicates that the recent state of stress is complex near the plate suture zone. These results of stress measurements can provide important basic data as well for study of fault activity and geological hazard and engineering stability evaluation in Qinghai-Tibet railway, as also for continental dynamic study.
Qinghai-Tibet Plateau is most intensive in tectonic activity. In order to understand the recent state of stress, ground stress surveys were carried out at different structural positions and depths and in different rocks using piezomagnetic stress gauge overcoring method in the central Qinghai-Tibet Plateau. The results of stress measurements indicate that the direction of maximum principal stress is NE. This agrees with the result of the study of geology and earthquake and deformation. The values of maximum principal stress are 3.6～6.8MPa which are high as compared with those obtained elsewhere in China from a viewpoint of regional stress analysis. But the value and the direction of Amdo stress measurement site are different with those of other sites. The direction of maximum principal stress is NWW. The value of maximum principal stress is 8.1 MPa. This also indicates that the recent state of stress is complex near the plate suture zone. These results of stress measurements can provide important basic data as well for study of fault activity and geological hazard and engineering stability evaluation in Qinghai-Tibet railway, as also for continental dynamic study.
引文
[1]傅容珊,徐耀民,黄建华等.青藏高原挤压隆升过程的数值模拟.地球物理学报,2000,43(3):346～355FuRS ,XuYM ,HuangJH ,etal.NumericalsimulationofthecompressionupliftoftheQinghaiXizangplateau.ChineseJ .Geophys.(inChinese),2000,43(3):346～355
[2]张 健,石耀霖.青藏高原隆升及伸展变形中的重力位能.地球物理学报,2002,45(2):226～232ZhangJ,ShiYL .TheroleofgravitationalpotentialenergyinraisingandspreadingofQinghaiXizangplateau.ChineseJ .Geophys.(inChinese),2002,45(2):226～232
[3]许才军,晁定波,刘经南等.用大地测量资料反演青藏高原构造应力场的初步尝试.测绘学报,1997,26(2):95～100XuCJ,ChaoDB ,LiuJN ,etal.ApreliminaryattemptforinversionoftectonicstressfieldinTibetanPlateauwithgeodeticdata.ActaGeodaeticaetCartographicaSinica(inChinese),1997,26(2):95～100
[4]杜兴信,邵辉成.由震源机制解反演中国大陆现代构造应力场.地震学报,1999,21(4):354～360DuXX ,ShaoHC .DeducedstructuralstressfieldofChinesecontinentthroughanalysisofearthquakeresource.ActaSeismologicaSinica(inChinese),1999,21(4):354～360
[5]刘允芳,罗超文,龚壁新等.岩体地应力与工程建设.武汉:湖北科学技术出版社,20001～182LiuYF ,LuoCW ,GongBX ,etal.GeostressandEngineeringConstruction.Wuhan:HubeiScienceandTechnologyPress,20001～182
[6]王连捷,潘立宙,廖椿庭等.地应力测量及其在工程中的应用.北京:地质出版社,199182～101WangLJ,PanLZ ,LiaoCT ,etal.CrustalStressMeasurementsandTheirApplicationinEngineering.Beijing:GeologicalPublishingHouse,199182～101
[7]李方全,孙世宗,李立球.华北及郯庐断裂带地应力测量.岩石力学与工程学报,1982,1(1):73～86LiFQ ,SunSZ ,LiLQ .In situstressmeasurementsinChinaandTanchengLujiangfaultzone.ChineseJournalofRockMechanicsandEngineering(inChinese),1982,1(1):73～86
[8]施兆贤,丁旭初,安其美等.拉西瓦水电站地应力测量及有关问题的讨论.地壳构造与地壳应力文集,1991,(5):167～180ShiZX ,DingXC ,AnQM ,etal.CrustalstressmeasurementofLaxiwahydropowerstationandthediscussionoftherelatedproblem.ProceedingsofCrustalTectonicandCrustalStress(inChinese),1991,(5):167～180
[9]廖椿庭,吴满路,张春山等.青藏高原昆仑山和羊八井现今地应力测量及其工程意义.地球学报,2002,23(4):353～357LiaoCT ,WuML ,ZhangCS ,etal.RecentgroundstressmeasurementoftheKunlunmountainsandYangbajingareainQinghaiTibetplateauanditsengineeringsignificance.ActaGeoscientiaSinica(inChinese),2002,23(4):353～357
[10]廖椿庭,崔明铎,任希飞等.金川矿区应力测量与构造应力场.北京:地质出版社,198522～35LiaoCT ,CuiMD ,RenXF ,etal.In situStressMeasurementsandTectonicStressFieldintheJinchuanMineArea(inChinese).Beijing:GeologicalPublishingHouse,198522～35
[11]孙世宗,安其美,黄一和.安康水电站地应力测量研究.地壳构造与地壳应力文集,1988,(2):50～58SunSZ ,AnQM ,HuangYH .AstudyofstressmeasurementsathydroelectricstationinAnkangCounty.ProceedingsofCrustalTectonicandCrustalStress(inChinese),1988,(2):50～58
[12]吴满路,廖椿庭.大茅随道地应力测量及围岩体稳定性研究.地质力学学报,2000,6(2):71～76WuML ,LiaoCT .StressmeasurementsandstudyofstabilityoftheDamaotunnel.JournalofGeomechanics(inChinese),2000,6(2):71～76
[13]李方全,祁英男.地壳应力随深度的变化规律.岩石力学与工程学报,1988,7(4):301～309LiFQ ,QiYN .VariationofcrustalstresseswithdepthinChina.ChineseJournalofRockMechanicsandEngineering(inChinese),1988,7(4):301～309
[14]廖椿庭,施兆贤.金川矿区原岩应力实测及在矿山设计中的应用.岩石力学与工程学报,1983,2(1):103～112LiaoCT ,ShiZX .In situstressmeasurementsandtheir applicationtoengineeringdesignintheJinchuanmine.ChineseJournalofRockMechanicsandEngineering(inChinese),1983,2(1):103～112
[15]李方全,刘光勋.我国现今地应力状态及有关问题.地震学报,1986,8(2):156～171LiFQ ,LiuGX .ThepresentstateofstressinChinaandrelatedproblems.ActaSeismologicaSinica,1988,7(4):301～309
[16]HaimsonBC .Thehydrofracturingstressmeasuringmethodandrecentfieldresults.Int.J.RockMech.Min.Sci.andGeomech.Abstr.,1978,15:167～178
[17]HastN .ThestateofstressintheupperpartoftheEarth’scrust.Tectonophysics,1969,8:169～211
[18]LiaoChunting,ZhangChunshan,WuManlu,etal.StresschangeneartheKunlunfaultbeforeandaftertheMS 81Kunlunearthquake.GeophysicalResearchLetters,2003,30(20):20～27
[19]吴珍汉,吴中海,胡道功等.可可西里东部活动断裂的地质特征.地学前缘,2003,10(4):583～589WuZH ,WuZH ,HuDG ,etal.GeologicalfeaturesofactivefaultsineastHohxilmountainsofnorthernTibetanplateau.EarthScienceFrontiers(inChinese),2003,10(4):583～589
[20]吴珍汉,叶培盛,吴中海等.青藏铁路沿线断裂活动的灾害效应.现代地质,2003,17(1):1～7WuZH ,YePS ,WuZH ,etal.HazardeffectsofactivefaultingalongtheGolmudLhasarailwayacrosstheTibetanplateau.Geoscience(inChinese),2003,17(1):1～7
[21]徐锡伟,陈文彬,于贵华等.2001年11月14日昆仑山库赛湖地震(MS81)地表破裂带的基本特征.地震地质,2002,24(1):1～13XuXW ,ChenWB ,YuGH ,etal.CharacteristicfeaturesofthesurfacerupturesoftheHohsaihu(Kunlunshan)earthquake(MS81),northernTibetanplateau,China.SeismologyandGeology(inChinese),2002,24(1):1～13
[22]江在森,马宗晋,张 希等.GPS初步结果揭示的中国大陆水平应变场与构造变形.地球物理学报,2003,46(3):352～358JangZS ,MaZJ ,ZhangX ,etal.HorizontalstrainfieldandtectonicdeformationofChinamainlandrevealedbypreliminaryGPSresult.ChineseJ.Geophys.(inChinese),2003,46(3):352～358
[2]张 健,石耀霖.青藏高原隆升及伸展变形中的重力位能.地球物理学报,2002,45(2):226～232ZhangJ,ShiYL .TheroleofgravitationalpotentialenergyinraisingandspreadingofQinghaiXizangplateau.ChineseJ .Geophys.(inChinese),2002,45(2):226～232
[3]许才军,晁定波,刘经南等.用大地测量资料反演青藏高原构造应力场的初步尝试.测绘学报,1997,26(2):95～100XuCJ,ChaoDB ,LiuJN ,etal.ApreliminaryattemptforinversionoftectonicstressfieldinTibetanPlateauwithgeodeticdata.ActaGeodaeticaetCartographicaSinica(inChinese),1997,26(2):95～100
[4]杜兴信,邵辉成.由震源机制解反演中国大陆现代构造应力场.地震学报,1999,21(4):354～360DuXX ,ShaoHC .DeducedstructuralstressfieldofChinesecontinentthroughanalysisofearthquakeresource.ActaSeismologicaSinica(inChinese),1999,21(4):354～360
[5]刘允芳,罗超文,龚壁新等.岩体地应力与工程建设.武汉:湖北科学技术出版社,20001～182LiuYF ,LuoCW ,GongBX ,etal.GeostressandEngineeringConstruction.Wuhan:HubeiScienceandTechnologyPress,20001～182
[6]王连捷,潘立宙,廖椿庭等.地应力测量及其在工程中的应用.北京:地质出版社,199182～101WangLJ,PanLZ ,LiaoCT ,etal.CrustalStressMeasurementsandTheirApplicationinEngineering.Beijing:GeologicalPublishingHouse,199182～101
[7]李方全,孙世宗,李立球.华北及郯庐断裂带地应力测量.岩石力学与工程学报,1982,1(1):73～86LiFQ ,SunSZ ,LiLQ .In situstressmeasurementsinChinaandTanchengLujiangfaultzone.ChineseJournalofRockMechanicsandEngineering(inChinese),1982,1(1):73～86
[8]施兆贤,丁旭初,安其美等.拉西瓦水电站地应力测量及有关问题的讨论.地壳构造与地壳应力文集,1991,(5):167～180ShiZX ,DingXC ,AnQM ,etal.CrustalstressmeasurementofLaxiwahydropowerstationandthediscussionoftherelatedproblem.ProceedingsofCrustalTectonicandCrustalStress(inChinese),1991,(5):167～180
[9]廖椿庭,吴满路,张春山等.青藏高原昆仑山和羊八井现今地应力测量及其工程意义.地球学报,2002,23(4):353～357LiaoCT ,WuML ,ZhangCS ,etal.RecentgroundstressmeasurementoftheKunlunmountainsandYangbajingareainQinghaiTibetplateauanditsengineeringsignificance.ActaGeoscientiaSinica(inChinese),2002,23(4):353～357
[10]廖椿庭,崔明铎,任希飞等.金川矿区应力测量与构造应力场.北京:地质出版社,198522～35LiaoCT ,CuiMD ,RenXF ,etal.In situStressMeasurementsandTectonicStressFieldintheJinchuanMineArea(inChinese).Beijing:GeologicalPublishingHouse,198522～35
[11]孙世宗,安其美,黄一和.安康水电站地应力测量研究.地壳构造与地壳应力文集,1988,(2):50～58SunSZ ,AnQM ,HuangYH .AstudyofstressmeasurementsathydroelectricstationinAnkangCounty.ProceedingsofCrustalTectonicandCrustalStress(inChinese),1988,(2):50～58
[12]吴满路,廖椿庭.大茅随道地应力测量及围岩体稳定性研究.地质力学学报,2000,6(2):71～76WuML ,LiaoCT .StressmeasurementsandstudyofstabilityoftheDamaotunnel.JournalofGeomechanics(inChinese),2000,6(2):71～76
[13]李方全,祁英男.地壳应力随深度的变化规律.岩石力学与工程学报,1988,7(4):301～309LiFQ ,QiYN .VariationofcrustalstresseswithdepthinChina.ChineseJournalofRockMechanicsandEngineering(inChinese),1988,7(4):301～309
[14]廖椿庭,施兆贤.金川矿区原岩应力实测及在矿山设计中的应用.岩石力学与工程学报,1983,2(1):103～112LiaoCT ,ShiZX .In situstressmeasurementsandtheir applicationtoengineeringdesignintheJinchuanmine.ChineseJournalofRockMechanicsandEngineering(inChinese),1983,2(1):103～112
[15]李方全,刘光勋.我国现今地应力状态及有关问题.地震学报,1986,8(2):156～171LiFQ ,LiuGX .ThepresentstateofstressinChinaandrelatedproblems.ActaSeismologicaSinica,1988,7(4):301～309
[16]HaimsonBC .Thehydrofracturingstressmeasuringmethodandrecentfieldresults.Int.J.RockMech.Min.Sci.andGeomech.Abstr.,1978,15:167～178
[17]HastN .ThestateofstressintheupperpartoftheEarth’scrust.Tectonophysics,1969,8:169～211
[18]LiaoChunting,ZhangChunshan,WuManlu,etal.StresschangeneartheKunlunfaultbeforeandaftertheMS 81Kunlunearthquake.GeophysicalResearchLetters,2003,30(20):20～27
[19]吴珍汉,吴中海,胡道功等.可可西里东部活动断裂的地质特征.地学前缘,2003,10(4):583～589WuZH ,WuZH ,HuDG ,etal.GeologicalfeaturesofactivefaultsineastHohxilmountainsofnorthernTibetanplateau.EarthScienceFrontiers(inChinese),2003,10(4):583～589
[20]吴珍汉,叶培盛,吴中海等.青藏铁路沿线断裂活动的灾害效应.现代地质,2003,17(1):1～7WuZH ,YePS ,WuZH ,etal.HazardeffectsofactivefaultingalongtheGolmudLhasarailwayacrosstheTibetanplateau.Geoscience(inChinese),2003,17(1):1～7
[21]徐锡伟,陈文彬,于贵华等.2001年11月14日昆仑山库赛湖地震(MS81)地表破裂带的基本特征.地震地质,2002,24(1):1～13XuXW ,ChenWB ,YuGH ,etal.CharacteristicfeaturesofthesurfacerupturesoftheHohsaihu(Kunlunshan)earthquake(MS81),northernTibetanplateau,China.SeismologyandGeology(inChinese),2002,24(1):1～13
[22]江在森,马宗晋,张 希等.GPS初步结果揭示的中国大陆水平应变场与构造变形.地球物理学报,2003,46(3):352～358JangZS ,MaZJ ,ZhangX ,etal.HorizontalstrainfieldandtectonicdeformationofChinamainlandrevealedbypreliminaryGPSresult.ChineseJ.Geophys.(inChinese),2003,46(3):352～358
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