抗干扰高分辨率浅层地震技术在工程评价中的应用——以沪杭磁悬浮交通线路(浙江段)工程场地地震安全性评价项目为例
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摘要
沪杭磁悬浮交通线路工程场地地震安评近场工作属于线状并且是长线工程项目,该长线工程场地经过多条复杂活动断层。活动断层的探测是工程场地地震安全性评价近场工作中的重要工作。本文结合抗干扰高分辨率浅层地震技术在沪杭磁悬浮交通线路工程场地地震安评近场工作中的应用,通过对该长线工程沿线的城市干扰源及干扰源特征分析,总结一套应用于长线工程场地的野外数据采集及数据处理的方法。最后以沪杭磁悬浮沿线塘栖—越东断层探测为实例,进一步证实了抗干扰高分辨率浅层地震技术在长线状工程场地地震安评近场工作中的应用效果,从而为长线工程场地地震安坪、高速铁路等重大长线工程断裂活动性的探测提供方法和依据。
TThe near-field seismic safety evaluation work for the site of maglev traffic-line project between Shanghai and Hangzhou belongs to a long-line project.It passes through many complex active faults.To investigate these faults is the most important in near-field seismic safety evaluation.By means of the shallow seismic technology of anti-disturbance high resolution,this paper studies and analyzes the noise sources and their characteristics along cities by the line.Though this investigation,we conclude with a set of methods for filed data acquisition and processing.Finally,we give an example of investigating the Tangxi-Yuedong fault along Shanghai-Hangzhou maglev transrapid to further confirm the effectiveness of the shallow seismic technique of the anti-disturbance high resolution using seismic safety evaluation and then provide an effective method for long-line seismic safety evaluation or faults investigation of high-speed railway.
TThe near-field seismic safety evaluation work for the site of maglev traffic-line project between Shanghai and Hangzhou belongs to a long-line project.It passes through many complex active faults.To investigate these faults is the most important in near-field seismic safety evaluation.By means of the shallow seismic technology of anti-disturbance high resolution,this paper studies and analyzes the noise sources and their characteristics along cities by the line.Though this investigation,we conclude with a set of methods for filed data acquisition and processing.Finally,we give an example of investigating the Tangxi-Yuedong fault along Shanghai-Hangzhou maglev transrapid to further confirm the effectiveness of the shallow seismic technique of the anti-disturbance high resolution using seismic safety evaluation and then provide an effective method for long-line seismic safety evaluation or faults investigation of high-speed railway.
引文
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[2]GB17741-2005,工程场地震安全性评价技术[S].
[3]孙培林,庄益明,任日春,等.浅层地震反射法在城市活断层勘查中压制干扰探讨[J].中国煤田地质,2005,17(3):43～50.
[4]陈蜀俊,罗登贵,甘家思,等.浅层地震勘探在工程场地地震安全性评价近场工作中的应用[J].物探与化探,2004,28(5):463～466.
[5]易兵,曾昭发,薛建,等.地球物理方法对城市活断层的探测与研究[J].地球物理学进展,2008,23(2):599～604.
[6]徐佩芬.高分辨率地震勘探确定隐伏地质构造方法研究[J].地球物理学进展,1998,13(2):41～44.
[7]石林珂,孙懿斐,岳安平,等.地震安全性评价方法及其应用[J].物探化探计算技术,2008,30(2):120～124.
[8]温超,张合,冉志杰,等.地震映像勘探在工程场地地震安全性评价近场区工作中的应用[J].华北地震科学,2008,26(1):13～16.
[9]何正勤,潘华,胡刚,等.核电厂址隐伏断裂探测中的地震勘探方法研究[J].地球物理学报,2010,53(2):326～333.
[10]刘保金,胡平,陈颙,等.北京平原西北部地壳浅部结构和隐伏活动断裂—由地震反射剖面揭示[J].地球物理学报,2009,52(8):2015～2024.
[11]王庆海,徐明才.抗干扰高分辨率浅层地震勘探[M].北京:地质出版社,1991.
[12]魏柏林.东南沿海地震活动特征[M].北京:地震出版社,2002.
[2]GB17741-2005,工程场地震安全性评价技术[S].
[3]孙培林,庄益明,任日春,等.浅层地震反射法在城市活断层勘查中压制干扰探讨[J].中国煤田地质,2005,17(3):43～50.
[4]陈蜀俊,罗登贵,甘家思,等.浅层地震勘探在工程场地地震安全性评价近场工作中的应用[J].物探与化探,2004,28(5):463～466.
[5]易兵,曾昭发,薛建,等.地球物理方法对城市活断层的探测与研究[J].地球物理学进展,2008,23(2):599～604.
[6]徐佩芬.高分辨率地震勘探确定隐伏地质构造方法研究[J].地球物理学进展,1998,13(2):41～44.
[7]石林珂,孙懿斐,岳安平,等.地震安全性评价方法及其应用[J].物探化探计算技术,2008,30(2):120～124.
[8]温超,张合,冉志杰,等.地震映像勘探在工程场地地震安全性评价近场区工作中的应用[J].华北地震科学,2008,26(1):13～16.
[9]何正勤,潘华,胡刚,等.核电厂址隐伏断裂探测中的地震勘探方法研究[J].地球物理学报,2010,53(2):326～333.
[10]刘保金,胡平,陈颙,等.北京平原西北部地壳浅部结构和隐伏活动断裂—由地震反射剖面揭示[J].地球物理学报,2009,52(8):2015～2024.
[11]王庆海,徐明才.抗干扰高分辨率浅层地震勘探[M].北京:地质出版社,1991.
[12]魏柏林.东南沿海地震活动特征[M].北京:地震出版社,2002.
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