【摘要】 江苏常州横林地裂缝1989年始发,是苏锡常地区最早被发现的地裂缝,整体沿NE向走向,落差100～500 mm,裂缝带宽度50～350 m,局部地裂缝分布和走向受古潜山控制。地裂缝空间上主要发育于古潜山的边缘及砂层与岩溶接触带,时间上其发展与地下水主采层水位下降速度加快、岩溶水水位低于第Ⅱ承压水水位的阶段相对应。综合分析推断,横林地裂缝是由地下水过度开采、基岩起伏导致的不均匀沉降,以及岩溶土洞等因素共同诱发的,兼具岩溶塌陷型与基岩潜山型特点。更多还原

【Abstract】 The geosutures in Henglin area, Changzhou City, Jiangsu Province were started in 1989 and were the earliest geosutures discovered in the Su-Xi-Chang areas. The geosutures are generally along the NE strike, with a drop of 100～500 mm and a width of 50～350 m. The distribution and strike of local geosutures are controlled by the ancient buried hill, geosutures are mainly developed in the edge of the ancient buried hill and the contact zone between sand layer and karst. In terms of time, their development is corresponding to the stage when the water level of the main underground mining layer decreases faster and the karst water level is lower than the second confined water. Based on the comprehensive analysis, it is concluded that the cracks in the transverse woodland are caused by the excessive exploitation of groundwater, the uneven settlement caused by bedrock undulation, and the karst soil caves, which have the characteristics of karst collapse and bedrock buried hill.更多还原