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zhuan li jian jie
Pages: 23-24
Year: Issue:  6
Journal: Mining Technology

Keyword:  锚杆螺旋件可靠性发明证书专利安装方法起爆药包杆体钻孔工作机构;
Abstract: <正> 管状锚杆的安装方法这种方法包括将螺旋件装到杆体的外表面上,将锚杆连同药包插入钻孔内,起爆药包加固锚杆。为了减少安装工作的劳动量和提高其使用的可靠性,利用弹性条带作螺旋件,预先沿纵向方向将此带拉紧,以便于锚杆无阻碍地插入孔内和在锚杆人孔的过程中弹性条带能缠
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