西藏加查地区某水电站坝址区隐伏断裂研究
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摘要
该水电站坝址区位于Ⅱ、Ⅲ级阶地平台上,被第四系松散沉积物覆盖,为探明下面是否发育有隐伏断层,本文首先研究从区域构造变形规律和坝址区周边基岩断层发育特征出发,结合断层气(氡气和地气)测量技术发现13号测点氡气和地气均出现异常,因此判断该阶地下面发育有一条规模较小的隐伏断层,走向近东西向,倾角较陡,对该处工程稳定性影响不大。也为今后该地区的隐伏断裂研究提供借鉴意义。
The dam area of the hydropower station is located on the Ⅱ and Ⅲ terrace platforms,covered by Quaternary unconsolidated sediments.In order to find out the following development of buried fault,this paper firstly studies from regional tectonic deformation regularities and the developmental features of fault broken zone around the dam area,combination of fault gas(radon gas and geo-gas) measurement technology found No.13 survey station of radon gas and geo-gas are abnormal.It's found that there are one small buried fault developing below the terraces,and with nearly E-W trending,dip steeply but have small impact on the stability of engineering nearby.
The dam area of the hydropower station is located on the Ⅱ and Ⅲ terrace platforms,covered by Quaternary unconsolidated sediments.In order to find out the following development of buried fault,this paper firstly studies from regional tectonic deformation regularities and the developmental features of fault broken zone around the dam area,combination of fault gas(radon gas and geo-gas) measurement technology found No.13 survey station of radon gas and geo-gas are abnormal.It's found that there are one small buried fault developing below the terraces,and with nearly E-W trending,dip steeply but have small impact on the stability of engineering nearby.
引文
[1]黄晨.西藏加查地区构造特征及水电工程适应性评价[D].成都:成都理工大学.2011
[2]向宏发.隐伏断裂研究及其工程应用-以北京平原区为例[M].北京:地震出版社.1994.
[3]金东淳,崔天日.物探方法在探测隐伏断层中的应用[J].世界地质,2003,22(1):8285.
[4]刘菁华,王祝文,刘树田,等.城市活动断裂带的土壤氡,汞气评价方法[J].吉林大学学报(地球科学版),2006,36(2):295197.
[5]晓辉,童纯菡.河床地区地气测量找隐伏断裂[J].物探与化探,2009,33(2):128-131.
[6]邵永新,杨绪连,李一兵.河海隐伏断层探测中土壤气氡和气汞测量及其结果[J].地震地质,2007,29(3):627-636.
[7]万天丰.中国大地构造学纲要[M].北京:地质出版社,2004.
[8]潘桂棠,李兴振,王立全,等,青藏高原及邻区大地构造单元初步划分[J].地质通报,2002,21(11):701-707.
[9]梁文轩.射气测量在寻找隐伏构造中的应用[J].四川建材,2010,36[5]:114-119
[10]尹宗义,王北颖,王会锋,等.西安多目标地球化学调查在揭示隐伏断裂中的应用[J].陕西地质,2009.27(1):56-61.
[11]张建伟,赵全升,郭秀岩,等.聊城-兰考断裂及其土壤汞、氡气异常[J].中国地质,2010,37(5):1419-1425.
[12]张慧,张新基,苏鹤军.兰州市活动断层土壤气汞、氡地球化学特征场地试验[J].西北地震学报,2010,32(3):273-278.
[13]刘树田,邓金宪.活动断裂带的壤中气汞量测量研究[J].地质论评,1998,44(5):547-552.
[14]Ciotoli G,Etiope G,Guerra M.The detection of concealed faults in the Ofanto Basin using the correlation between soil-gas fracture surveys[J],Tectonophysics,1999,301(3-4)(3-4):321-332.
[2]向宏发.隐伏断裂研究及其工程应用-以北京平原区为例[M].北京:地震出版社.1994.
[3]金东淳,崔天日.物探方法在探测隐伏断层中的应用[J].世界地质,2003,22(1):8285.
[4]刘菁华,王祝文,刘树田,等.城市活动断裂带的土壤氡,汞气评价方法[J].吉林大学学报(地球科学版),2006,36(2):295197.
[5]晓辉,童纯菡.河床地区地气测量找隐伏断裂[J].物探与化探,2009,33(2):128-131.
[6]邵永新,杨绪连,李一兵.河海隐伏断层探测中土壤气氡和气汞测量及其结果[J].地震地质,2007,29(3):627-636.
[7]万天丰.中国大地构造学纲要[M].北京:地质出版社,2004.
[8]潘桂棠,李兴振,王立全,等,青藏高原及邻区大地构造单元初步划分[J].地质通报,2002,21(11):701-707.
[9]梁文轩.射气测量在寻找隐伏构造中的应用[J].四川建材,2010,36[5]:114-119
[10]尹宗义,王北颖,王会锋,等.西安多目标地球化学调查在揭示隐伏断裂中的应用[J].陕西地质,2009.27(1):56-61.
[11]张建伟,赵全升,郭秀岩,等.聊城-兰考断裂及其土壤汞、氡气异常[J].中国地质,2010,37(5):1419-1425.
[12]张慧,张新基,苏鹤军.兰州市活动断层土壤气汞、氡地球化学特征场地试验[J].西北地震学报,2010,32(3):273-278.
[13]刘树田,邓金宪.活动断裂带的壤中气汞量测量研究[J].地质论评,1998,44(5):547-552.
[14]Ciotoli G,Etiope G,Guerra M.The detection of concealed faults in the Ofanto Basin using the correlation between soil-gas fracture surveys[J],Tectonophysics,1999,301(3-4)(3-4):321-332.
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