防水煤柱在矿井防止喀斯特水害中起很大作用。确定煤柱的大小有许多计算方法和图解方法,用不同的方法求得的结果也不相同。这就需要有一个确定煤柱尺寸的统一方法。本文的煤柱设计方法就是在批判、研究和评价各种确定煤柱尺寸方法的基础上提出的。该方法既能用于计算断层附近的煤柱,又能用于矿井边界煤柱的设计。 Water-proof pillars in the mine to prevent karst water plays a large role. There are many calculation methods and graphical methods for determining the size of pillars. The results obtained by different methods are also different. This requires a unified method of determining the size of coal pillars. This paper’s pillars design method is based on the criticism, research and evaluation of various methods to determine the size of pillars based on the proposed. The method can not only be used to calculate the coal pillar near the fault, but also to design the coal pillar at the mine boundary.