“一通三防”(通风,防尘、防瓦斯、防水)是煤矿安全生产的重要保障。在过去的几十年中,徐州矿务集团有限公司(以下简称“集团”)就曾经因为它的偏差,发生过数起重大瓦斯、煤尘爆炸事故,造成重大人员伤亡和经济损失。集团具有125年的煤炭开采历史,是国家6部委首批核定的国有特 “One Ventilation and Three Preventions” (Ventilation, Dustproof, Anti-gas, Waterproof) is an important guarantee for coal mine safety production. In the past few decades, Xuzhou Mines Group Co., Ltd. (hereinafter referred to as the “Group”) once had several serious gas and coal dust explosion accidents because of its deviation, causing heavy casualties and economic losses. The group has 125 years of coal mining history, is the first batch of six ministries and commissions approved by the state state-owned special