By theoretical analysis and lab test, put forward a kind of newtype bolts which may prevent bolt tails from being broken, bolt construction structure's pattern, and bolt made technology.
通过理论分析和实验，提出了一种防止锚尾破断的新型锚杆，以及锚杆结构形式和加工制造工艺。
2
Analyzed the problem that exist in suspension roof support, and presented the newtype strong steel big-end bolt can solve this problem.
分析了普通金属锚杆存在的问题，并提出新型金属粗尾锚杆可以很好地解决这方面存在的问题。
3
The revetment with anchor bolt frame is a newtype of slope protection and strengthening measure applied for expansive soil side slope.