Genesis Analysis of Fault Creep Type Ground Fissures in the Hebei Plain
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摘要: 从20世纪80年代开始至今,河北平原出现了大量地裂缝,致使建筑物和道路交通遭受破坏,给当地人民生命财产带来了严重危害。断层蠕滑型地裂缝因其延伸长、深度大、破坏严重、防治难度大而更应引起重视,断层蠕滑型地裂缝对河北平原地裂缝的研究及防治具有重要意义。笔者在大量野外调查的基础上,从实地调查的800多条地裂缝中选取了两条典型断层蠕滑型地裂缝——隆尧地裂缝、辛-安-深-饶地裂缝,由物探、槽探等综合勘查手段作为验证,初步分析了该类型地裂缝的成因: 它们受控于断裂活动,区域内的深部构造活动为地裂缝的形成提供了动力基础。地下水、地表水的活动对地裂缝的地表开启及发展有重要的促进作用。
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关键词:
- 隆尧地裂缝 /
- 辛-安-深-饶地裂缝 /
- 断层蠕滑 /
- 成因分析
Abstract: A lot of ground fissures have occurred in Hebei Plain since 1980s. Some of them have extensive damage to the buildings and roads, and have serious damage to the people’s life and property. The fault creep type ground fissures are characterized by long stretch, great depth, serious destruction, and difficult prevention and control. It is suggested that more attention should be paid to the fault creep type ground fissures which have important significance in the research and control of ground fissures in Hebei Plain. Based on wide filed investigations, two typical fault creep type ground fissures (the Longyao and Xin-An-Shen-Rao) are selected from more than 800 ground fissures. The genesis is preliminary analyzed according to the comprehensive method of geophysical prospecting, trenching and other exploration. It is proposed that the fault creep type ground fissures are controlled by fault activities of study area; the deep tectonic activities provide dynamic foundation for the formation of ground fissures; the activities of ground and surface water promote the opening and development of ground fissures. -
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