首页|A Typical Paleochannel-Controlled Ground Fissure in Hengshui,Hebei Plain,China

A Typical Paleochannel-Controlled Ground Fissure in Hengshui,Hebei Plain,China

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Nearly 1 100 fissures have formed on the Hebei Plain in China.Within the Yellow River-Qinghe River-Zhanghe River shallow buried paleochannel band on the plain,93 ground fissures con-trolled by paleochannels have developed,of which the Wuyi-Fuping ground fissure is a typical paleochannel-controlled fissure located in Hengshui,Hebei Province,with a total length of 3 km,a dominant strike of NE78°,and nearly upright in the shallow layer.The surface damage observed in this fissure primarily manifests as beaded pits,and its activity shows distinct segmentation characteris-tics.On the trench profiles,the offset distance of shallow layers remains consistently around 20 cm within the depth range of 0 to-3 m.An evident flexure is observed in the strata at depths ranging from-4.5 to-7 m.The drilling profile reveals that there is an absence of dislocations in the deeper strata.Nonetheless,the shallow seismic physical profiles unveil the presence of underlying faults beneath the study area,underscoring the intricate formation process and genesis mechanism of the Wuyi-Fuping ground fissure.Firstly,the formation and evolution of the Qingling River's paleochannel were shaped by the actions of fault blocks and underlying faults.The interplay of the regional stress field,fault block movement,and fault activity played pivotal roles in driving the development of this paleochan-nel.Secondly,the paleochannel exerts a controlling influence on the development location and severity of the fissure.During pumping,the confined aquifer within the paleochannel undergoes water loss and compression,resulting in the formation of a surface subsidence funnel.When the tensile stress surpass-es the soil's tensile strength at the funnel's edge,the soil fractures give rise to a ground fissure.Finally,large amounts of surface water generated by heavy rainfall and irrigation can cause existing hidden ground fissures to rupture,emerge,and expand.This paper provides a heretofore generally unknown example,promotes research on the mechanisms of paleochannel-controlled fissures,and has guiding significance for disaster prevention and reduction in this area.

ground fissureHebei Plainpaleochannelpumping activitysurface watersdisaster prevention

Feiyong Wang、Jianbing Peng、Jishan Xu、Quanzhong Lu

展开 >

School of Engineering and Technology,Institute of Geosafety,China University of Geosciences Beijing,Beijing 100083,China

Key Laboratory of Earth Fissures Geological Disaster,Ministry of Natural Resources(Geological Survey of Jiangsu Province),Nanjing 210018,China

Observation and Research Station of Ground Fissure and Land Subsidence,Ministry of Natural Resources,Xi'an 710054,China

Key Laboratory of Western China's Mineral Resources and Geological Engineering,Ministry of Education,Chang'an University,Xi'an 710054,China

School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China

展开 >

2024

10.1007/s12583-023-1960-x

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(6)