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qing he men kuang li jing tong feng xi tong gai zao
Author(s): 
Pages: 6-12+65
Year: Issue:  1
Journal: Safety in Coal Mines

Keyword:  通风系统改造通风技术经济效果节约电费通风阻力风量通风改造矿井通风系统煤炭回风道;
Abstract: 该文介绍了清河门矿立井通风系统改造后的经济效果。该矿从1980年开始进行通风技术改造工作。1982年已见效。到1995年二水平建成投产后,每年约可节电155万度,节约电费13.95万元。按年生产煤炭90万吨计算。吨煤成本可下降0.155元。
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