CATEGORIZATION OF UNDERGROUND WORKS AFTER METHAN
[摘要] By existing procedure of categorization, underground work in which there is no or low quantity of methan is being ranged to nonmethanic regime. Difficulties in defining the source of gas, especially when there is possibility of feeding...
[发布日期] [发布机构]
[效力级别] [学科分类] 地质学
[关键词] methan;underground work;categorization;methanic regime;nonmethanic;conditionally nonmethanic [时效性]
