在大量调研的基础上，提出了矿井混凝土支护防漏的措施和方法，分析了双层混凝土井壁之间增设塑料夹层、掺加高效减水剂或早强减水剂、防水剂、ＪＱ防裂密实剂防漏水机理。针对冷泉矿主副井特点，优化防水措施。从实际封水效果等因素分析后认为，掺加ＪＱ防裂密实剂是矿井混凝土支护的新途径，是井壁和硐室混凝土支护防水技术的重大突破 On the basis of a large amount of investigation and research, the measures and methods for preventing leaks in mine concrete support are put forward. It is analyzed that an additional plastic sandwich is added between the double-wall of concrete lining, and the superplasticizer or water-repellent admixture, water repellent, JQ Anti-crack compact agent leak-proof mechanism. Aiming at the characteristics of primary and secondary wells in Lengquan Mine, the waterproofing measures are optimized. From the analysis of the actual sealing effect and other factors, it is considered that adding JQ anti-cracking dense agent is a new way of supporting concrete in mine and a major breakthrough in waterproofing technology of wellbore and chamber concrete support