承压含水层中孔压变化规律的振动台实验研究
|
摘要
为研究不同地震动作用下承压含水层中孔压变化规律及其主要影响因素,开展了基于地震模拟振动台的承压含水层孔隙水压力变化实验研究。结果表明:①地震动作用下孔压变化形态可分为振荡、振荡上升以及阶升三种类型,孔压变化形态及幅度均与加速度峰值密切相关,而与频率相关度较低;②孔压增量随加速度峰值增大而增大,其增长规律可表示为以加速度峰值为自变量的二次函数;③孔压消散过程基本呈线性规律,且消散速率与加速度峰值大小有关,加速度峰值越大,振后孔压消散速率越快。实验可为后续探究地震动作用下孔压变化信息在含水层中的传递机理提供一定参考。
In order to study the variation law of pore pressure in confined aquifer under different ground motions and its main influencing factors,an experimental study on the variation of pore pressure in confined aquifer based on seismic simulation vibration table was carried out. The results show these as follows. ①The variation patterns of pore pressure under the action of ground motion can be divided into three types: oscillation,oscillation rise and step rise; ②Pore pressure increment increases with the increase of peak acceleration,and its growth law can be expressed as a quadratic function with peak acceleration as its independent variable; ③ The dissipation process of pore pressure basically presents a linear law,and the dissipation rate is related to the magnitude of the peak acceleration. The larger the peak acceleration,the faster the dissipation rate of pore pressure after vibration. This experiment can provide some reference for the subsequent exploration of the transmission mechanism of pore pressure change information in the aquifer under the action of earthquake.
In order to study the variation law of pore pressure in confined aquifer under different ground motions and its main influencing factors,an experimental study on the variation of pore pressure in confined aquifer based on seismic simulation vibration table was carried out. The results show these as follows. ①The variation patterns of pore pressure under the action of ground motion can be divided into three types: oscillation,oscillation rise and step rise; ②Pore pressure increment increases with the increase of peak acceleration,and its growth law can be expressed as a quadratic function with peak acceleration as its independent variable; ③ The dissipation process of pore pressure basically presents a linear law,and the dissipation rate is related to the magnitude of the peak acceleration. The larger the peak acceleration,the faster the dissipation rate of pore pressure after vibration. This experiment can provide some reference for the subsequent exploration of the transmission mechanism of pore pressure change information in the aquifer under the action of earthquake.
引文
1宋洋,谷洪彪,李海君,等.断裂两盘井水位同震响应特征对比分析———以北京八宝山断裂带中段大灰厂两观测井为例[J].吉林大学学报(地球科学版),2016,46(6):1815-1822Song Yang,Gu Hongbiao,Li Haijun,et al. Comparison analysis of coseismic response characteristics of groundwater level at two sides of fault:a case study of dahuichang observation wells in the middle of babaoshan fault in beijing[J]. Journal of Jilin University(Earth Science Edition),2016,46(6):1815-1822
2 孙小龙.地下水动态变化与地震活动的关系研究[D].北京:中国地质大学(北京),2016Sun Xiaolong. Study on the relationship between dynamic changes of groundwater and seismic activity[D]. Beijing:China University of Geosciences(Beijing),2016
3 兰双双.深层地下水位动态对地震活动响应关系的研究[D].长春:吉林大学,2010Lan Shuangshuang. Research on the relationship of deep groundwater lever dynamic response to seismic activity[D]. Changchun:Jilin University,2010
4 车用太,杨会年.井孔水位微动态形成机理的探讨[J].地震地质,1985(3):43-50Che Yongtai,Yang Huinian. Discussion on formation mechanism of microwater level in borehole[J]. Seismological Geology,1985(3):43-50
5 黄春霞,张鸿儒,隋志龙,等.饱和砂土地基液化特性振动台试验研究[J].岩土工程学报,2006(12):2098-2103Huang Chunxia,Zhang Hongru,Sui Zhilong,et al. Shaking table tests on liquefaction properties of saturated sand ground[J]. Chinese Journal of Rock Mechanics and Engineering,2006(12):2098-2103
6 王炳辉,陈国兴,孙田,等.砂砾土抗液化强度的小型土箱振动台试验研究[J].岩土工程学报,2015,37(11):2094-2100Wang Binghui,Chen Guoxing,Sun Tian,et al. Liquefaction resistance of sand-gravel soils using small soil-box shaking table tests[J]. Chinese Journal of Rock Mechanics and Engineering,2015,37(11):2094-2100
7 郭尤林.动力荷载作用下边坡内孔压变化规律研究[D].昆明:昆明理工大学,2008Guo Youlin. Pore water pressure of slope change rule research under dynamic road[D]. Kunming:Kunming University of Science and Technology,2008
8 景立平,崔杰,李立云,等.粉土液化的小型振动台试验研究[J].地震工程与工程振动,2004(3):145-151Jin Liping,Cui Jie,Li Liyun,et al. Small shaking table modelling of silty soil liquefaction[J]. Earthquake Engineering and Engineering Vibration,2004(3):145-151
9 Seed H B,Martin P P,Lysmer J. The generation and dissipation of pore water pressure during soil liquefaction[D]. Berkey:Earthquake Engineering Research Center,University of California at Berkey,1975
10 Finn W D L,Lee K W,Martin G R. An effective stress model for liquefaction[J]. Journal of the Geotechnical Engineering Division,1977,103(6):517-533
11 Martin G R,Finn W D L,Seed H B. Fundamentals of liquefaction under cyclic loading[J]. Journal of the Geotechnical Engineering,1975,101(5):423-438
12 车用太,唐毅,鱼金子,等.不同结构的岩石试件变形破坏与孔隙压力关系的实验研究[J].地震,1995(4):333-339Che Yongtai,Tang Yi,Yu Jinzi,et al. Experimental study on some relations between pore-pressure and deformation-fracture of rock sample with distinct structure[J]. Earthquake,1995(4):333-339
13 陈国兴,王炳辉.局部排水条件下南京细砂振动孔压的波动特性[J].岩土工程学报,2010,32(5):767-773Chen Guoxing,Wang Binghui. Fluctuating characteristics of excess pore water pressure in Nanjing fine sand under partially drained conditions[J]. Chinese Journal of Rock Mechanics and Engineering,2010,32(5):767-773
14 刘凯,张远芳.饱和含细砾砂动孔隙水压力特性三轴试验研究[J].科学技术与工程,2016,16(19):283-287Liu Kai,Zhang Yuanfang. Triaxial tests study on dynamic pore water pressure characteristics of saturated fine gravel sand[J]. Science Technology and Engineering,2016,16(19):283-287
15 朱凌,裴向军,崔圣华,等.试验研究层间错动带动孔压增长的影响因素[J].科学技术与工程,2017,17(22):177-181Zhu Ling,Pei Xiangjun,Cui Shenghua,et al. Experimental study of the influences of dynamic pore pressure increase of the bedding fault[J]. Science Technology and Engineering,2017,17(22):177-181
16 杜艳强,杨春和,巫尚蔚.循环荷载下尾矿粉土的孔隙水压力特性[J].东北大学学报(自然科学版),2016,37(4):583-588Du Yanqiang,Yang Chunhe,Wu Shangwei. Pore-water pressure characteristics of tailings silt under cyclic loading[J]. Journal of Northeastern University(Natural Science),2016,37(4):583-588
17 史晓军,岳庆霞,李杰.土-结构动力相互作用振动台试验中模型地基影响因素分析[J].建筑科学与工程学报,2007(4):50-53Shi Xiaojun,Yue Qingxia,Li Jie. Influence factor analysis of foundation model in shaking table test considering soil-structure dynamic interaction[J]. Journal of Architecture and Civil Engineering,2007(4):50-53
18 冯希杰,金学申.场地土对基岩峰值加速度放大效应分析[J].工程地质学报,2001(4):385-388Feng Xijie,Jin Xuesen. Analysis on amplification effect of bedrock peak acceleration caused by site soil[J]. Journal of Engineering Geology,2001(4):385-388
19 张之颖,吕西林,陈跃庆,等.粘性土覆盖层下土中超孔隙水压力的动力试验研究[J].岩石力学与工程学报,2003(1):131-136Zhang Zhiying,Lu Xilin,Chen Yueqing,et al. Experimental study on excess pore water pressure of soils coverd by clay layer[J]. Chinese Journal of Rock Mechanics and Engineering, 2003(1):131-136
2 孙小龙.地下水动态变化与地震活动的关系研究[D].北京:中国地质大学(北京),2016Sun Xiaolong. Study on the relationship between dynamic changes of groundwater and seismic activity[D]. Beijing:China University of Geosciences(Beijing),2016
3 兰双双.深层地下水位动态对地震活动响应关系的研究[D].长春:吉林大学,2010Lan Shuangshuang. Research on the relationship of deep groundwater lever dynamic response to seismic activity[D]. Changchun:Jilin University,2010
4 车用太,杨会年.井孔水位微动态形成机理的探讨[J].地震地质,1985(3):43-50Che Yongtai,Yang Huinian. Discussion on formation mechanism of microwater level in borehole[J]. Seismological Geology,1985(3):43-50
5 黄春霞,张鸿儒,隋志龙,等.饱和砂土地基液化特性振动台试验研究[J].岩土工程学报,2006(12):2098-2103Huang Chunxia,Zhang Hongru,Sui Zhilong,et al. Shaking table tests on liquefaction properties of saturated sand ground[J]. Chinese Journal of Rock Mechanics and Engineering,2006(12):2098-2103
6 王炳辉,陈国兴,孙田,等.砂砾土抗液化强度的小型土箱振动台试验研究[J].岩土工程学报,2015,37(11):2094-2100Wang Binghui,Chen Guoxing,Sun Tian,et al. Liquefaction resistance of sand-gravel soils using small soil-box shaking table tests[J]. Chinese Journal of Rock Mechanics and Engineering,2015,37(11):2094-2100
7 郭尤林.动力荷载作用下边坡内孔压变化规律研究[D].昆明:昆明理工大学,2008Guo Youlin. Pore water pressure of slope change rule research under dynamic road[D]. Kunming:Kunming University of Science and Technology,2008
8 景立平,崔杰,李立云,等.粉土液化的小型振动台试验研究[J].地震工程与工程振动,2004(3):145-151Jin Liping,Cui Jie,Li Liyun,et al. Small shaking table modelling of silty soil liquefaction[J]. Earthquake Engineering and Engineering Vibration,2004(3):145-151
9 Seed H B,Martin P P,Lysmer J. The generation and dissipation of pore water pressure during soil liquefaction[D]. Berkey:Earthquake Engineering Research Center,University of California at Berkey,1975
10 Finn W D L,Lee K W,Martin G R. An effective stress model for liquefaction[J]. Journal of the Geotechnical Engineering Division,1977,103(6):517-533
11 Martin G R,Finn W D L,Seed H B. Fundamentals of liquefaction under cyclic loading[J]. Journal of the Geotechnical Engineering,1975,101(5):423-438
12 车用太,唐毅,鱼金子,等.不同结构的岩石试件变形破坏与孔隙压力关系的实验研究[J].地震,1995(4):333-339Che Yongtai,Tang Yi,Yu Jinzi,et al. Experimental study on some relations between pore-pressure and deformation-fracture of rock sample with distinct structure[J]. Earthquake,1995(4):333-339
13 陈国兴,王炳辉.局部排水条件下南京细砂振动孔压的波动特性[J].岩土工程学报,2010,32(5):767-773Chen Guoxing,Wang Binghui. Fluctuating characteristics of excess pore water pressure in Nanjing fine sand under partially drained conditions[J]. Chinese Journal of Rock Mechanics and Engineering,2010,32(5):767-773
14 刘凯,张远芳.饱和含细砾砂动孔隙水压力特性三轴试验研究[J].科学技术与工程,2016,16(19):283-287Liu Kai,Zhang Yuanfang. Triaxial tests study on dynamic pore water pressure characteristics of saturated fine gravel sand[J]. Science Technology and Engineering,2016,16(19):283-287
15 朱凌,裴向军,崔圣华,等.试验研究层间错动带动孔压增长的影响因素[J].科学技术与工程,2017,17(22):177-181Zhu Ling,Pei Xiangjun,Cui Shenghua,et al. Experimental study of the influences of dynamic pore pressure increase of the bedding fault[J]. Science Technology and Engineering,2017,17(22):177-181
16 杜艳强,杨春和,巫尚蔚.循环荷载下尾矿粉土的孔隙水压力特性[J].东北大学学报(自然科学版),2016,37(4):583-588Du Yanqiang,Yang Chunhe,Wu Shangwei. Pore-water pressure characteristics of tailings silt under cyclic loading[J]. Journal of Northeastern University(Natural Science),2016,37(4):583-588
17 史晓军,岳庆霞,李杰.土-结构动力相互作用振动台试验中模型地基影响因素分析[J].建筑科学与工程学报,2007(4):50-53Shi Xiaojun,Yue Qingxia,Li Jie. Influence factor analysis of foundation model in shaking table test considering soil-structure dynamic interaction[J]. Journal of Architecture and Civil Engineering,2007(4):50-53
18 冯希杰,金学申.场地土对基岩峰值加速度放大效应分析[J].工程地质学报,2001(4):385-388Feng Xijie,Jin Xuesen. Analysis on amplification effect of bedrock peak acceleration caused by site soil[J]. Journal of Engineering Geology,2001(4):385-388
19 张之颖,吕西林,陈跃庆,等.粘性土覆盖层下土中超孔隙水压力的动力试验研究[J].岩石力学与工程学报,2003(1):131-136Zhang Zhiying,Lu Xilin,Chen Yueqing,et al. Experimental study on excess pore water pressure of soils coverd by clay layer[J]. Chinese Journal of Rock Mechanics and Engineering, 2003(1):131-136
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |