Compares with drill emission hole, the use of cutting method to against coal and gas outburst prominent have characteristics of security, time and labour-saving, and easy to operate.
与排放钻孔相比，使用掏槽法防突具有省时、省力、容易操作以及安全性好等特点。
2
The over-loaded problems of initiator have direct influence upon its security and reliability, esp. in the case of emission and dynamic impacts.