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yong gang xing bei tong zha yao jin xing luo lu bao po
Author(s): 
Pages: 27
Year: Issue:  6
Journal: Safety in Coal Mines

Keyword:  裸露爆破被筒炸药高沼气矿井采煤方法井下爆破煤矿安全生产溜煤眼中顶板刚性急倾斜煤层;
Abstract: <正> 爆破作业至今依然是煤矿井下开采的主要方式,由于矿井瓦斯、煤尘等爆炸物质的存在;井下爆破作业一直是煤矿安全生产的重要危害。我矿是高沼气矿井,是地质情况复杂、条件不好的急倾斜煤层。矿井东翼三个采区实行仓贮式采煤方法。生产中顶板脱落出的大矸石块,经常堵塞溜煤眼,在特殊情况下需要进行裸露爆破。由于裸露爆破不安全,使得一些矿井
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