Characteristics and mechanism of the Longyao ground fissure on North China Plain, China
Characteristics and mechanism of the Longyao ground fissure on North China Plain, China
复制标题
华北平原隆尧地裂缝特征及机制
DOI：
10.1016/j.enggeo.2016.10.008
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发表时间：
2016-11
影响因子：
7.4
通讯作者：
Feiyong Wang
中科院分区：
文献类型：
--
作者：
Jianbing Peng;Jishan Xu;Runyong Ma;Feiyong Wang
在华北平原近30年来发育的1000余条地裂缝中，河北隆尧地裂缝是该地区长度最长、危害最大、影响最广的地裂缝。为揭示其成因，通过地质调查、测量、探槽、钻探和地震勘探等方法，详细研究了隆尧地裂缝的地质背景、发育特征和成因模式。该裂隙全长39 km，以正断层伸展、左旋走滑、顺向展布为主。这些特征与其下伏断裂--内昆断裂相一致。裂缝沿沿着以水平拉裂、沉陷、剪切破坏的形式对建（构）筑物造成破坏。根据探槽、钻探和浅层地震剖面资料，该裂缝具有同沉积断层特征，反映了裂缝活动的历史阶段性。从成因上看，该裂隙是在多种因素耦合作用下产生的，形成于地震后，并在地下水抽水作用下扩大。区域性伸展作用首先在地表地层中形成断裂系统，然后地震活动作用开始控制断裂，最后过量地下水的抽水作用等影响因素促进了现今地裂缝的形成。
Among more than 1000 ground fissures developed over the past 30 years having induced severe geohazards in the North China Plain, the Longyao ground fissure in Hebei Province is famous for its longest length and causing the worst damage and widest influence in this region. In order to reveal the origin of its formation, the geological background, developmental characteristics, and genetic mode of the Longyao ground fissure were investigated in detail by geological surveys, measurements, trenching, drilling and seismic exploration. This fissure has a total length of 39 km and is characterized by normal fault extension, left-lateral slip, and dominant along-polyline distribution. These characteristics are well consistent with its underlying fault — the Nei-jv fault. The fissure causes the damage to buildings (structures) along a polyline and in the form of a horizontal tensile crack, subsidence, and shear failure. According to the trenching, drilling and shallow seismic profiling, this fissure possesses the characteristics of synsedimentary faults reflecting the historical stages of fissure activities. Regarding its genesis, this fissure was generated under the coupling action of multiple factors, which took shape after the earthquake, and was enlarged under the action of groundwater pumping. The regional extension first caused a fracture system in the surface strata, and then the action of seismic activities started to control the fracture, and finally the pumping action of excessive groundwater and other influential factors promoted the formation of the current ground fissure.
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DOI：
--
发表时间：
2007
期刊：
--
影响因子：
--
作者：
Peng Jianbing
通讯作者：
Peng Jianbing
影响因子：
2.8
作者：
Xu, Jishan;Meng, Lingchao;An, Haibo;Wang, Liyang
通讯作者：
Wang, Liyang
影响因子：
2.4
作者：
E. Lekkas;S. Lozios;E. Skourtsos;H. Kranis
通讯作者：
E. Lekkas;S. Lozios;E. Skourtsos;H. Kranis
影响因子：
3
作者：
T. H. Rogers
通讯作者：
T. H. Rogers
影响因子：
4.2
作者：
Hong Ye;K. Shedlock;S. J. Hellinger;J. Sclater
通讯作者：
Hong Ye;K. Shedlock;S. J. Hellinger;J. Sclater