湖北省竹溪县地质灾害成因机理与局部构造关系

Relationship between Cause Mechanism of Geological Disaster and Local Structure in Zhuxi County of Hubei Province

竹溪县属于湖北省地质灾害多发县,对于该区地质灾害成因机理的研究前人所做工作甚少.在野外地质调查研究的基础上,对竹溪县地质环境与地质灾害之间的内在关系进行了深入研究,得出以下重要结论:地质灾害分区与区域构造分区具有一致性,整体表现为南崩、北滑、中间崩滑以及东西分异的地质灾害分布格局;局部构造样式控制地质灾害的类型与发育程度,南部山区断层相关褶皱样式控制着地质灾害类型与发育程度,北部逆冲推覆构造的前锋带控制地质灾害类型与发育程度;高倾角的板理构造控制地质灾害后期演化规律.

Zhuxi County in Hubei Province has a lot of geological disasters,but there is little research on the cause mechanism of geological disasters in this area.Based on the field geological survey,this paper makes an in-depth study on the relationsh between geological environment and geological disasters in Zhuxi County,and draws the following important conclusions:the geological disaster zoning is consistent with the regional zoning,and it overall performance is that the collapses in the south,the landslide in the north,landslides and collapses in the middle and different distribution patterns of geological disasters in eastern and western;the local structural pattern controls the type and development of geological disasters,the fault-related folds pattern in the southern mountainous area controls the geological disaster type and the degree of development,and the front belt of thrust nappe structure controls the types and development of geological disasters in the south;the board structure of high dip angles controls the late evolution of geological disasters.