n this paper,the fuzzy reliability is defined as a fuzzy number under the normal distributionand the fuzzy reliability of each branch of MVS is considered as a fuzzy number.

• 定义模糊可靠度为一个服从正态分布的模糊数，并以模糊数作为通风系统的各风路可靠度，进而提出了矿井通风系统的模糊可靠度计算方法。