盖家阴山滑坡的识别与稳定性分析
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摘要
盖家阴山滑坡位于新建铁路兰渝线锹峪河特大桥(DK 127+100~DK 127+900)段左侧,滑坡特征明显,为一巨型滑坡。根据地形地貌、地层结构及对当地老者的调查,初步判断此滑坡为地震引发滑坡。通过勘察发现此滑坡具有三层滑面,一个主滑面,二个次生滑面,经过计算分析二个次生滑体已经稳定,但主滑体在滑体完全饱和的极端情况下仍然可能复活,因此建议铁路线尽量绕避此滑坡并进行抗震验算。
Gaijiayinshan landslide was located in the left of Qiaoyu River Super large Bride(DK127+100～DK127+900) as a part of newly built Lanyu railway,the sliding characteristics was significant as for a huge landslide.According to topography and geomorphology,stratum structure and investigation by local old mon,we can make a pre-judgment that the landslide is a earthquake triggered landslide.By investigation,we can found that the landslide have three sliding surface,including a main sliding surface and the another two secondary sliding surface.The calculation results have shown that the two secondary sliding body has been stabilized,but the main sliding body may still slide in the extreme circumstances that the landslide is completely saturated.It is therefore proposed that the railway line is to avoid this landslide as much as possible and do seismic checking computations.
Gaijiayinshan landslide was located in the left of Qiaoyu River Super large Bride(DK127+100～DK127+900) as a part of newly built Lanyu railway,the sliding characteristics was significant as for a huge landslide.According to topography and geomorphology,stratum structure and investigation by local old mon,we can make a pre-judgment that the landslide is a earthquake triggered landslide.By investigation,we can found that the landslide have three sliding surface,including a main sliding surface and the another two secondary sliding surface.The calculation results have shown that the two secondary sliding body has been stabilized,but the main sliding body may still slide in the extreme circumstances that the landslide is completely saturated.It is therefore proposed that the railway line is to avoid this landslide as much as possible and do seismic checking computations.
引文
[1]铁道部第一勘测设计院.铁路工程地质手册[M].北京:中国铁道出版社,2005.
[2]晏同珍,杨顺安,方云.滑坡学[M].北京:中国地质大学出版社,2000.
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[4]GB 50021-2001.中华人民共和国建设部.岩土工程勘察规范[S].北京:中国建筑工业出版社,2002.
[5]TB10027-2001.铁道第二勘察设计院.铁路工程不良地质勘察规范[S].北京:中国铁道出版社,2001.
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[8]黄显贵,陈植华,郭英丽.基于地震力的滑坡稳定性分析[J].安全与环境工程,2005,12(1):82-84.
[2]晏同珍,杨顺安,方云.滑坡学[M].北京:中国地质大学出版社,2000.
[3]史海智.唐房滑坡的识别与稳定性分析[J].岩土工程界,2006,9(7):73-77.
[4]GB 50021-2001.中华人民共和国建设部.岩土工程勘察规范[S].北京:中国建筑工业出版社,2002.
[5]TB10027-2001.铁道第二勘察设计院.铁路工程不良地质勘察规范[S].北京:中国铁道出版社,2001.
[6]陈祖煜.土质边坡稳定分析——原理.方法.程序[M].北京:中国水利水电出版社,2003.
[7]杨扶银,邵生俊,李建军.温州大桥南岸挖方边坡滑坡加固治理与分析[J].水利与建筑工程学报,2007,5(2):53-57.
[8]黄显贵,陈植华,郭英丽.基于地震力的滑坡稳定性分析[J].安全与环境工程,2005,12(1):82-84.
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