Investigation of Mechanical Properties for Group Anchors

Prestressed anchor support is one of the most important methods for coal mine roadways. As mining depth increases, adaptability existing prestressed has become weaker and weaker, which mainly reflected in current prestress much smaller than resistance required stability roadways makes it difficult to effectively control In order solve problem, a group structure was proposed realize higher technology improve status deep For roadways, new topic, design method theoretical basis are lacking. Therefore, paper studied bearing capacity anchors through physical tests numerical simulations. Among them, special set drawing tooling designed processed match test. The test results show that can double rigidity compared with traditional anchors, further optimize parameters surrounding rock. helpful rock roadway.