金沙江下游溪洛渡水电站马家河坝断层活动性及工程稳定性
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摘要
金沙江溪洛渡水电站为一巨型水电站,库首区发育一逆冲推覆构造——马家河坝断层。该断层,尤其是右岸的飞来峰群, 在工程运行期间将没于水下,因此。断层活动性研究及稳定性评价十分重要。通过基础地质、第四纪地貌、地震地质、水文地质、年代地质等方法综合研究,认为马家河坝断层不具活动性。控制性剖面极限平衡分析计算表明,右岸飞来峰群在各种工况条件下总体保持良好稳定状态。
The Xiluodu Hydropower Station on the Jinsha River is a giant hydropower station, but a thrust nappe structure-Majiahe Dam fault-lies in the reservoir head region. This fault, especially a swarm of klippen on the right bank of the river, will submerge when the hydropower station is in operation. Therefore it is very important to study the activity of the fault and make a stability assessment. Integrated fundamental geological, Quaternary geomorphological, seismic geological, hydrogeological and geochronological studies show that the Majiahe Dam fault is not an active fault, and the limit equilibrium analysis and calculation of the controlling section indicate that the swarm of klippen will generally maintain good stability under all construction conditions.
The Xiluodu Hydropower Station on the Jinsha River is a giant hydropower station, but a thrust nappe structure-Majiahe Dam fault-lies in the reservoir head region. This fault, especially a swarm of klippen on the right bank of the river, will submerge when the hydropower station is in operation. Therefore it is very important to study the activity of the fault and make a stability assessment. Integrated fundamental geological, Quaternary geomorphological, seismic geological, hydrogeological and geochronological studies show that the Majiahe Dam fault is not an active fault, and the limit equilibrium analysis and calculation of the controlling section indicate that the swarm of klippen will generally maintain good stability under all construction conditions.
引文
[1]胡海涛．区域地区稳定性评价的“安全岛”理论及方法[J]．地质力学 学报,2001,(2):97-103．
[2]朱志澄．逆冲推覆构造,第二版[M]．武汉:中国地质大学出版社, 1991．11-30．
[3]吴运高,李继亮,樊敬亮．造山带逆冲推覆构造研究的主要新进展 [J].地球科学进展,2000,15(4):426-433．
[4]Dahlen F A.Critical upermodel of fold-and thrust belts and ac- cretionary wedges[J].Annual Reviews of Planetary Sciences,1990, 18:99.
[5]Mosar J,Supper J.Role of shear in fault-propagation folding[A]. In:Mcclay K R ed.Thrust tectonics[C].London:Chapman and Hall,1992.123-132.
[6]Boyer S E.Geometric evidence for synchronous thrusing in the sounthern Alberta and northeast Montana thrust belt[A].In:Mc- clay K R.Thrust tectonics [C].London:Chapman and Hall, 1992.377-390.
[7]Epard J L,Escher A.Transition from basement to cover:age- metric model[J].J.Struct.Geol.,1996,18(5):533-548.
[8]Eshcer A,Beaumont C. Formation,burial and exhumation of basement nappes at crustal scale:A geometric model based on the western Swiss-Italian Alps[J].J.Struct.Geol.,1997,19(7):955- 974.
[9]刘维亮,吴德超,赵德军,等．大渡河金川水电站区域地区稳定性定 量化评价[J].陕西师范大学学报,2005,33(22):157-161．
[10]吴珍汉,周春景,王薇,等．青藏铁路沿线构造活动性评价和工程 稳定性区划[J]．地质通报,2005,24(5):401-410．
[11]吴珍汉,吴中海,张永双,等．青海西南部乌丽活动断裂系的地质 特征及灾害效应[J].地质通报,2003,22(6):437-444．
[12]党光明,王赞军．青海昆仑山口西Ms8．1级地震地表破裂带特征与 主要灾害:对青藏高原区域稳定性评价的制约[J]．地质通报, 2002,21(2):105-120．
[13]马宗晋．活动构造基础与工程地震[M]．北京:地震出版社,1992．180- 182．
[14]唐荣昌,钱洪．活断层的地质研究及其在工程安全性评价的意义 [J]．四川地震,1994,(1):69-70．
[15]邵兆刚,孟宪刚,朱大岗,等．西藏阿里地区札达沉积盆地活动构 造[J].地质通报,2005,24(7):625-629．
[16]郭进京,杜东菊,韩文峰,等．黄河黑山峡大柳树坝址区F201和F7(8) 断层的活动性[J]．地质通报,2004,23(12):1259-1264．
[17]马寅生,施炜,张岳桥,等．昆仑活动断裂带玛曲段活动特征及其 东延[J].地质通报,2004,24(1):30-35．
[18]许建聪,尚岳全,陈侃福,等．顺层滑坡弹塑性接触有限元稳定性 分析[J]．岩石力学与工程学报,2005,24(13):2231-2236．
[19]Dunean J M.State of the art:limit equilibrium and finite ele- ment analysis of slope[J].Jounal of Geotechniacal Ennineerinn, 1996,22(7):577-596.
[20]池秀文,秦莹,夏元友．崩滑体稳定性计算及防治方法研究[J].岩石 力学与工程学报,2005,24(6):975-979．
[2]朱志澄．逆冲推覆构造,第二版[M]．武汉:中国地质大学出版社, 1991．11-30．
[3]吴运高,李继亮,樊敬亮．造山带逆冲推覆构造研究的主要新进展 [J].地球科学进展,2000,15(4):426-433．
[4]Dahlen F A.Critical upermodel of fold-and thrust belts and ac- cretionary wedges[J].Annual Reviews of Planetary Sciences,1990, 18:99.
[5]Mosar J,Supper J.Role of shear in fault-propagation folding[A]. In:Mcclay K R ed.Thrust tectonics[C].London:Chapman and Hall,1992.123-132.
[6]Boyer S E.Geometric evidence for synchronous thrusing in the sounthern Alberta and northeast Montana thrust belt[A].In:Mc- clay K R.Thrust tectonics [C].London:Chapman and Hall, 1992.377-390.
[7]Epard J L,Escher A.Transition from basement to cover:age- metric model[J].J.Struct.Geol.,1996,18(5):533-548.
[8]Eshcer A,Beaumont C. Formation,burial and exhumation of basement nappes at crustal scale:A geometric model based on the western Swiss-Italian Alps[J].J.Struct.Geol.,1997,19(7):955- 974.
[9]刘维亮,吴德超,赵德军,等．大渡河金川水电站区域地区稳定性定 量化评价[J].陕西师范大学学报,2005,33(22):157-161．
[10]吴珍汉,周春景,王薇,等．青藏铁路沿线构造活动性评价和工程 稳定性区划[J]．地质通报,2005,24(5):401-410．
[11]吴珍汉,吴中海,张永双,等．青海西南部乌丽活动断裂系的地质 特征及灾害效应[J].地质通报,2003,22(6):437-444．
[12]党光明,王赞军．青海昆仑山口西Ms8．1级地震地表破裂带特征与 主要灾害:对青藏高原区域稳定性评价的制约[J]．地质通报, 2002,21(2):105-120．
[13]马宗晋．活动构造基础与工程地震[M]．北京:地震出版社,1992．180- 182．
[14]唐荣昌,钱洪．活断层的地质研究及其在工程安全性评价的意义 [J]．四川地震,1994,(1):69-70．
[15]邵兆刚,孟宪刚,朱大岗,等．西藏阿里地区札达沉积盆地活动构 造[J].地质通报,2005,24(7):625-629．
[16]郭进京,杜东菊,韩文峰,等．黄河黑山峡大柳树坝址区F201和F7(8) 断层的活动性[J]．地质通报,2004,23(12):1259-1264．
[17]马寅生,施炜,张岳桥,等．昆仑活动断裂带玛曲段活动特征及其 东延[J].地质通报,2004,24(1):30-35．
[18]许建聪,尚岳全,陈侃福,等．顺层滑坡弹塑性接触有限元稳定性 分析[J]．岩石力学与工程学报,2005,24(13):2231-2236．
[19]Dunean J M.State of the art:limit equilibrium and finite ele- ment analysis of slope[J].Jounal of Geotechniacal Ennineerinn, 1996,22(7):577-596.
[20]池秀文,秦莹,夏元友．崩滑体稳定性计算及防治方法研究[J].岩石 力学与工程学报,2005,24(6):975-979．
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