新汶矿业集团孙村煤矿 ,目前进入井深 -10 50ｍ的极限井深开采阶段。该矿采取三条大巷交叉回风的通风措施 ,使 - 10 50水平煤炭的开采更为安全可靠。该通风系统建成后 ,增加可采储量 1478万ｔ,矿井服务年限延长 14年 ,- 10 50水平温度降低 2～ 3℃ ,深井高温有所缓解国内-1050m Xinwen Mining Group Suncun Coal Mine, the current depth of 10-50m into the limit of deep well mining stage. The mine adopted ventilation measures for cross-return air flow in three large lanes to make the mining of -1050 horizontal coal safer and more reliable. After the ventilation system is completed, the recoverable reserves will increase by 14.78 million tons and the service life of mines will be extended by 14 years. The horizontal temperature of 10-50 will be reduced by 2-3 ° C, and the deep well will be relieved of high temperature. The domestic -1050m