为确保海下采煤安全,防止海水溃入井下,研究了龙口矿区海下采煤的导水通道类型,主要有构造裂隙类导水通道、采动导水裂隙带通道、封闭不良钻孔造成的通道、海域煤层露头带安全煤(岩)柱留击穿形成的导水通道4种类型。这些潜在的导水通道在采矿活动及动水压力等因素作用下,成为诱发海水溃入的主要途径。分析了不同导水通道结构特征和影响因素,提出了相应的探测方法及防治水技术措施。

In order to ensure the mining safety under sea and to prevent sea water rushing into the mine, the paper had a study on the water flowing channel types for the coal mining under the sea, mainly including the structure cracking type water flowing channel, the mining dynamic water flowing cracking zone channel, the bore hole improperly sealing caused water flowing channel and the safety coal (rock) pillar failure caused water flowing channel in seam outcrop zone of sea area.Under the mining activities, the flowing water pressure and other factors, those potential water flowing channels would be the main accesses to cause the sea water rushing into t he mine.The paper analyzed the structure features and influence factors of the different water flowing channels and provided the relevant technical measures of the wat er prediction as well the water prevention and control.