gob area meaning in English

采空区
老窿

Congregation analysis of coalbed methane in gob area based on gis
的采空区煤层气聚集分析
Elementary analysis of surface borehole stability in gob area methane drainage
地面采空区瓦斯抽放钻孔稳定性分析
Comprehensive management of spontaneous combustion in gob areas of fully - mechanized faces
综采工作面采空区自然发火的综合治理
The technical norms for fire - prevention of mine gob areas by the inhibition of atomized sprays
煤矿采空区阻化汽雾防火技术规范
Fast drilling technology on deep overburden gravel layer in treatment of coal gob area
采空区治理工程中深覆盖厚卵砾石层钻进施工

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