石佛寺水库主坝坝基抗震液化分析与治理技术
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摘要
石佛寺水库是辽河干流的一座重要水库。前期的地质勘察发现主坝坝基存在有较严重的地震液化现象,据此运用标贯法和seed简化方法进行了坝基的抗震液化分析判别。根据石佛寺水库的特定条件和具体情况,本文提出了采用以振冲法为主并结合振动沉管砂桩法处理主坝坝基的地震液化问题。根据现场试验,此种治理方案效果明显,具有较强的应用性和推广性。
Shifosi reservoir is an important reservoir of Liaohe main stream.By geological investigation,it is found that the problem of serious earthquake liquefaction existed at the dam foundation.With use of standard penetration test and seed method,the analy-sis on dam foundation anti-earthquake liquefaction was done.According to the specific conditions of Shifosi reservoir,the paper proposed the treatment method of vibroflotation combined with vibrosinking.The site experiment result showed that the method was effective and worthy popularization.
Shifosi reservoir is an important reservoir of Liaohe main stream.By geological investigation,it is found that the problem of serious earthquake liquefaction existed at the dam foundation.With use of standard penetration test and seed method,the analy-sis on dam foundation anti-earthquake liquefaction was done.According to the specific conditions of Shifosi reservoir,the paper proposed the treatment method of vibroflotation combined with vibrosinking.The site experiment result showed that the method was effective and worthy popularization.
引文
[1]王奎峰.石佛寺水库土石坝地震液化分析及防治[D].阜新:辽宁工程技术大学,2005.
[2]苏向前,张长存,姜冰川,等.引黄入晋工程大梁水库主坝坝基黄土震动液化初探[J].水利水电工程设计,2007,26(1):35～36.
[3]辽宁省水利水电勘测设计研究院.石佛寺水库一期工程(中坝址)水文地质工程地质勘察报告[R].2002.
[4]胡宪洲.石佛寺水库坝基防渗及抗震加固技术的研究与应用[D].南京:河海大学,2004.
[5]石兆吉,张荣祥,顾宝和,等.砂土液化判别和综合方法研究[J].地震工程与工程振动,1997,17(1):83～89.
[6]刘颖,谢君斐,等.砂土震动液化[M].北京:地震出版社,1984.
[2]苏向前,张长存,姜冰川,等.引黄入晋工程大梁水库主坝坝基黄土震动液化初探[J].水利水电工程设计,2007,26(1):35～36.
[3]辽宁省水利水电勘测设计研究院.石佛寺水库一期工程(中坝址)水文地质工程地质勘察报告[R].2002.
[4]胡宪洲.石佛寺水库坝基防渗及抗震加固技术的研究与应用[D].南京:河海大学,2004.
[5]石兆吉,张荣祥,顾宝和,等.砂土液化判别和综合方法研究[J].地震工程与工程振动,1997,17(1):83～89.
[6]刘颖,谢君斐,等.砂土震动液化[M].北京:地震出版社,1984.
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