Current Situation and Prospect of Gas Extraction Technology and Equipment for Coal Mines in China

Abstract

Gas extraction is an essential measure to reduce the amount of gas discharged by mine air and prevent gas disasters.Based on the previous research and a large number of literature research, the existing coal mine gas extraction technology is systematically sorted out, the development history of coal mine gas extraction technology and equipment in China is briefly reviewed, and the research progress and application of six typical gas extraction technologies are summarized. On the basis of summarizing and analyzing the development status and technical bottlenecks of gas extraction in China, looking forward to its future development trend, high power, high reliability, high efficiency, intelligent coal mine drilling technology and equipment and increased permeability of coal seam and gas extraction from drilling technology and the key technologies of gas extraction including accurate monitoring and intelligent control of gas extraction parameters, coordinated development of coal mine gas(CBM) and coal, evaluation of abandoned (closed) mine gas “sweet spot” resources and efficient extraction technologies are the main development directions of gas extraction technology and equipment in China’s coal mines in the future.

Keywords

• gas extraction
• development of coalbed methane
• coal and gas co-mining
• pumping equipment
• development trend