摘要
介绍了寒冷地区矿井井筒冬季保温情况。
The situation of keping the shaft warm in the cold area in winter is introduced.And the relation between the water-proof performance of the shaft wall and keeping the shaft warm is analyzed.
出处
《煤炭技术》
CAS
2001年第7期39-40,共2页
Coal Technology