摘要
为了解济宁市滋阳山地区地裂缝的成因机制,通过资料收集、地质测量、钻探、物探、遥感解译、山地工程、室内试验、水位动态监测、工程测量、综合分析等研究该地区的地裂缝现状及分布规律.结果表明:该地区主要出现6处地裂缝出露区;裂缝有直线型、交叉型和不规则塌坑型3种类型;地裂缝全部发育于林木种植地区,且该地区由农耕区变更为大面积种植林木之前,未见有村民反映的地裂缝相关报导,可推断地裂缝的出现和林木的种植关联性很强;经调查林木移植与地裂缝的产生有相关性;地裂缝在地表显现的方向与林木种植的行向方向一致;据推测地裂缝的垂向切割深度可能至膨胀土层底部.可见研究区控制地裂缝活动的首要条件是膨胀土的分布,其次是林木移植程度、林木种植以及水动力活动迁移条件.
Abstract
In order to understand the genesis mechanism of ground fissures in the Ziyang Mountain area of Jining City,the current situation and distribution patterns of ground fissures in the area were studied through methods including data collection,geological measurement,drilling,geophysical exploration,remote sensing interpretation,mountain engineering,indoor experiments,water level dynamic monitoring,engineering measurement,and comprehensive analysis.The results show that there are 6 exposed areas of ground fissures in the region.There are three types of cracks:linear,intersecting,and irregular collapse.All ground fissures are developed in forest planting areas,and before the area was changed from an agricultural area to a large-scale forest planting area,there were no reports of ground fissures reported by villagers.It can be inferred that the appearance of ground fissures is strongly related to the planting of trees.After investigation,there is a correlation between tree transplantation and the occurrence of ground fissures;The direction of ground fissures appearing on the surface is consistent with the direction of tree planting.It is speculated that the vertical cutting depth of the ground fissure may reach the bottom of the expansive soil layer.It is concluded that primary condition for controlling ground fissure activity in the research area is the distribution of expansive soil,followed by the degree of tree transplantation,tree planting,and hydrodynamic activity migration conditions.
基金项目
兖州区地质灾害风险普查项目(SDGP370882202102000132)
维普
万方数据