The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Practice of Orientation Technology for Drilling Long Extraction Bore Holes and the Development of Direction Regulator
Author(s): 
Pages: 24-25
Year: Issue:  9
Journal: COAL TECHNOLOGY

Keyword:  长钻孔钻孔轨迹钻孔弯曲纠偏新型钻具导正器;
Abstract: 在长钻孔实际施工过程中,利用定向钻进技术和自己研制的配套器件,结合力学理论,保证钻孔的实际运行轨迹在设计允许偏差内,以确保钻孔的终孔点在设计的范围内,达到安全有效的抽采工作面瓦斯的目的,防止钻孔误透巷道及采空区,造成事故及形成安全隐患.
Related Articles
loading...