Technology Maturity Evaluation of Gas Drainage in Coal Mine Based on AHP

In order to pick out the most optimal gas drainage technology from many kinds of technologies, a concept of technology maturity of gas drainage is proposed, and the index system about which is established. The quantitative evaluation methods of technology maturity of gas drainage is calculated based on APH. Using this method, technology maturity of gas drainage technologies which are widely used in coal mines in Guizhou province is calculated.