扩大锚杆支护范围的关键措施

锚杆支护是一项技术上先进经济合理的巷道支扩技术,近几年来在我国煤矿得到广泛的应用。但在煤层动压卷道中使用的比例较低,其原因是煤层动压巷道的围岩变形量普遍较大,而锚杆允许的围岩变形量较小,由此提出扩大锚杆使用范围的关键措施——提高锚杆的锚固力。

Key Measures to Enlarge Scope of Rockbolting

Rockbolting is a kind of ground supporting technique, which is both economically reasonable and technologically advanced. In recent years, it has been widely used in most of the coal mines in our country. However, it has not been frequently used in dynamical pressure roadways because the deformation of the surrounding rocks of the coal seam dynamical pressure roadways is large, while rockbolting only allows a smaller deformation. Hence the author suggests some key measures to enlarge the scope of rockbolting by strengthening the anchoring power of rockbolts.