金刚井田岩溶陷落柱特征及形成机理分析

Analysis on Characteristics and Formation Mechanism of Karst Collapse Columns in Jingang Mine Field

介绍了金刚井田地质基本情况,对金刚井田建矿以来揭露的岩溶陷落柱形态特征、分布规律进行了简要分析,提出了岩溶陷落柱是深部可溶性岩石受地下水溶蚀,形成空洞,局部地层错位,上部岩石在重力作用和真空吸吮作用下向下陷落的产物,与金刚井田地质构造运动无关。指出了岩溶陷落柱对回采的影响,对矿井安全回采、预防水害事故等具有指导作用。

This paper described the basic geological conditions of Jingang mine field, and briefly analyzed the morphological characteristics and distribution regularity of the karst collapse columns exposed in Jingang mine field since the establishment of the mine. It also put forward that the karst collapse colunms were formed due to the dissolution of deep dissoluble rock by underground water, the cavern formation, the malposition of local stratum as well as the collapse of upper rock under the action of gravity and vacuum suction, and it was not related to the movement of the geological structures in Jingang mine field. Finally the paper pointed out the influence of the collapse columns on coal mining. All of these have guiding significance for safe coal mining and the prevention of mine water disaster.