复杂长线工程场地工程地质与工程地震条件评价——以永古高速公路为例
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摘要
本文以甘肃省永登-古浪高速公路为例,通过野外地质调查、物探和钻探工作,对高速公路沿线地形地貌、水文地质、地层岩性介质、构造地质、地震等几个方面进行了详细研究和分类,并在此基础上对公路沿线分段的工程地质与工程地震条件进行了评价,用以说明复杂长线工程场地工程地质与工程地震条件评价的工作内容和方法。研究结果表明永古高速公路沿线工程地质与工程地震条件复杂多变,各区段均有特殊的工程地质问题和工程地震条件,施工设计中应根据各段特点采取相应的措施。
Taking the Yongdeng-Gulang Freeway as an example,through the field geology investigation,physical prospecting and borehole surveying,the detailed study and classification are implemented on topographical feature,hydrological geology conditions,lithologic characters of stratum,tectonic geology conditions and earthquake risk along the freeway.Based on above works,the engineering geology and engineering seismology conditions are evaluated on different segment of the freeway.The results show that in different segments of the freeway there are different geology problems and particular engineering earthquake conditions,so in design and construction it is necessary to take different corresponding measures for the problems and characteristics in each segment.This engineering project could be taken as an example for explicating the content and way of the work on engineering geology and seismology conditions evaluation in long-line engineering site.
Taking the Yongdeng-Gulang Freeway as an example,through the field geology investigation,physical prospecting and borehole surveying,the detailed study and classification are implemented on topographical feature,hydrological geology conditions,lithologic characters of stratum,tectonic geology conditions and earthquake risk along the freeway.Based on above works,the engineering geology and engineering seismology conditions are evaluated on different segment of the freeway.The results show that in different segments of the freeway there are different geology problems and particular engineering earthquake conditions,so in design and construction it is necessary to take different corresponding measures for the problems and characteristics in each segment.This engineering project could be taken as an example for explicating the content and way of the work on engineering geology and seismology conditions evaluation in long-line engineering site.
引文
[1]冉永康,陈立春.中国长线工程场地地震安全性评价中的活动构造问题[J].地震地质,2004,26(4):733-741.
[2]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.工程场地地震安全性评价(GB17741-2005)[S].北京:中国标准出版社,2005.
[3]国家地震局.中国地震烈度区划图(1990)概论[M].北京:地震出版社,1996:64-88.
[4]陈有明,刘洪春,曾文灏,等.古浪大震的地质灾害及破坏特征[J].西北地震学报,1999,21(3):315-320.
[5]袁炳祥,谌文武,梁收运,等.青藏铁路沿线活动断裂带对地质选线的影响.西北地震学报,2009,31(2):121-125.
[2]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.工程场地地震安全性评价(GB17741-2005)[S].北京:中国标准出版社,2005.
[3]国家地震局.中国地震烈度区划图(1990)概论[M].北京:地震出版社,1996:64-88.
[4]陈有明,刘洪春,曾文灏,等.古浪大震的地质灾害及破坏特征[J].西北地震学报,1999,21(3):315-320.
[5]袁炳祥,谌文武,梁收运,等.青藏铁路沿线活动断裂带对地质选线的影响.西北地震学报,2009,31(2):121-125.
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