概述了煤矿井下水患的形成;论述了在水文地质条件复杂或极复杂的矿井(如存在喀斯特溶洞漏斗构造或前期开采破坏较大的整合矿井)坚持“有掘必探”的必要性。以探讨的方式,较全面地介绍了在薄煤层及中厚煤层中掘进工作面进行探水的方法和手段,以及其在井下防范水患中所起的作用。 This paper summarizes the formation of coal mine water flooding and discusses the necessity of sticking to the exploration of coal in the complicated or extremely complicated hydrogeological conditions (such as the existence of karst karst funnel structures or the former integrated coal mines with great damage). In the way of discussion, the methods and means of water exploration in thin seam and middle and thick coal seam are introduced more comprehensively, and their roles in preventing floods in underground are discussed.