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
Bookmark and Share
Application of Full Length Screen Technology with Gas Drainage in Soft Seam Application of Full Length Screen Technology with Gas Drainage in Soft Seam
Author(s): 
Pages: 24-26
Year: Issue:  9
Journal: Coal

Keyword:  full length screen pipesoft coal seamgas drainage;
Abstract: For soft coal seam gas drainage hole wall stability is poor,could easily lead to the injection hole, hole collapse under the screen is difficult, gas drainage efficiency undesirable problems.This paper describes a full -bore section screen technology, equip-ment and processes, and the technology in Lu'an Changcun Coal Mine,conducted industrial tests.The results show that:in soft seam section under full control screen process than a high porosity of 50% traditional craft;full bore section screen technology allows gas drainage hole concentration increased nearly three -fold;hole pure gas traffic increased by nearly 2 times;and technical protection screen at full bore section hole effect is much higher than traditional techniques,particularly the use of the technology in soft coal seam methane drainage can greatly improve efficiency.
Related Articles
No related articles found