水库诱发地震两种机理的比较研究
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摘要
对水库诱发地震的两种机理,静水压作用和岩石孔隙压作用进行了模拟对比研究和实例研究.结果显示,在相同构造应力状态下,水库蓄水后由静水压作用诱发地震所需的蓄水深度比孔隙压作用诱发地震所需的蓄水深度要大得多.对于库区岩层含有隐伏断层的情况,由于水的渗透作用增强,产生诱发水库地震对孔隙压作用显得更为敏感.蓄水后孔隙水压力增加是水库诱发地震的主要因素.
The two mechanisms of hydrostatic pressure and pore pressure effects for reservoir-induced earthquake are comparatively simulated and case studied.The results indicate that under the same tectonic stress the water-storage depth for hydrostatic pressure effect needed to induce earthquake is much higher than that of pore pressure effect after water storage in reservoir.As the result of water permeation effect being reinforced in the case of buried fault in reservoir area,the pore pressure effect which induce reservoir earthquake show more sensitivity.The increase of pore pressure after water storage is the major factor of reservoir-induced earthquake.
The two mechanisms of hydrostatic pressure and pore pressure effects for reservoir-induced earthquake are comparatively simulated and case studied.The results indicate that under the same tectonic stress the water-storage depth for hydrostatic pressure effect needed to induce earthquake is much higher than that of pore pressure effect after water storage in reservoir.As the result of water permeation effect being reinforced in the case of buried fault in reservoir area,the pore pressure effect which induce reservoir earthquake show more sensitivity.The increase of pore pressure after water storage is the major factor of reservoir-induced earthquake.
引文
[1]秦嘉政,钱晓东,邬成栋.云南澜沧江流域水库诱发地震监测与研究[M].昆明:云南科技出版社,2006.
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[3]沈崇刚,陈厚群,张楚汉,等.新丰江水库地震及其对大坝的影响[J].中国科学,1974,2:184-205.
[4]CHEN L,TALWANI P.Reservoir-induced seismicityin China[J].Pure and Applied Geophysics,1998,153:133-149.
[5]H K古普塔,B K.拉斯托吉.水坝与地震[M].北京:地震出版社,1980.
[6]T.弗拉达特.水库诱发地震的新研究[J].水力与大坝.1996,6.
[7]Pradeep Talwani,Steve Acree.孔压扩散与水库诱发地震机制[C].世界水库诱发地震研究文集,昆明:云南科技出版社,2006.
[8]陈颙.地壳岩石的力学性能-理论基础与实验方法[M].北京:地震出版社,1988.
[9]JAEGER J C,COOK N G W.Fundamentals of Rock Me-chanics[M].Methuen,London,1969.
[10]毛玉平,王洋龙,付虹,等.漫湾和大朝山电站水库诱发地震活动及其构造环境研究[J].地震研究,2008,31(3):209-214.
[11]董天禹,杜建民,简树明.漫湾电站水库地震监测[M]//秦嘉政,叶建庆,邵德盛,等.云南澜沧江流域水库诱发地震监测与研究.昆明:云南科技出版社,2006,227-2321.
[12]毛玉平.澜沧江中段水利枢纽工程水库诱发地震的地震地质环境分析[J].地震研究,2003,26(增刊):63-69.
[13]岩土工程勘察、施工检测与检测新技术实用手册(1)[J].北京:中国建筑科技出版社,2008.
[2]丁原章.水库诱发地震[M].北京:地震出版社,1989:15-19.
[3]沈崇刚,陈厚群,张楚汉,等.新丰江水库地震及其对大坝的影响[J].中国科学,1974,2:184-205.
[4]CHEN L,TALWANI P.Reservoir-induced seismicityin China[J].Pure and Applied Geophysics,1998,153:133-149.
[5]H K古普塔,B K.拉斯托吉.水坝与地震[M].北京:地震出版社,1980.
[6]T.弗拉达特.水库诱发地震的新研究[J].水力与大坝.1996,6.
[7]Pradeep Talwani,Steve Acree.孔压扩散与水库诱发地震机制[C].世界水库诱发地震研究文集,昆明:云南科技出版社,2006.
[8]陈颙.地壳岩石的力学性能-理论基础与实验方法[M].北京:地震出版社,1988.
[9]JAEGER J C,COOK N G W.Fundamentals of Rock Me-chanics[M].Methuen,London,1969.
[10]毛玉平,王洋龙,付虹,等.漫湾和大朝山电站水库诱发地震活动及其构造环境研究[J].地震研究,2008,31(3):209-214.
[11]董天禹,杜建民,简树明.漫湾电站水库地震监测[M]//秦嘉政,叶建庆,邵德盛,等.云南澜沧江流域水库诱发地震监测与研究.昆明:云南科技出版社,2006,227-2321.
[12]毛玉平.澜沧江中段水利枢纽工程水库诱发地震的地震地质环境分析[J].地震研究,2003,26(增刊):63-69.
[13]岩土工程勘察、施工检测与检测新技术实用手册(1)[J].北京:中国建筑科技出版社,2008.
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