It is verified that roof bolt broken problem may be solved with new type's thick tail bolt.

证明了新型粗尾锚杆可以解决顶板锚杆破断问题。

The paper makes an analysis of the stresses on split-set roof bolt, and gives results of in-situ tests.

本文对管缝式锚杆进行了受力分析，并介绍了现场试验研究结果。

There are many kinds of strata in roof bolt hole. Proper using and choosing are available for increasing comprehensive benefit.

锚杆钻孔所遇岩层种类较多，合理地选择锚杆钻头类型有利于提高综合效益。

Inclined combined beam model with roof bolted are presented and solved, the expressions of support parameters of bolt are derived.

建立大倾角煤层回采巷道锚杆支护的倾斜组合梁模型，并进行解算，给出锚杆支护参数的表达式。

The paper discussed the other parts in the high strength roof bolt support system, including the resin, combined parts and anchor.

论述了高强度锚杆支护系统中的其它构件，包括树脂锚固剂、组合构件和锚索。