The Analysis of the Current Situation and Problems of the Coalbed Gas Drainage in China

摘要

The development of the coalbed gas drainage technology is analyzed,and the present coalbed gas drainage technology and the characters of eachstage are defined.According to the statistical analysis of the drainage quantity of the coalbed gas in China,it is found out that the gross of the drainage isincreased year by year,but there are still seriously problems such as the low drainage rate and performance.The reasons of the low drainage rate are anaylsed inboth objective and subjective aspects,and the solution is brought forward.