Study on Remained Gas Content Calculation in Protected Coal Seam

Remained gas content is an important basic parameter of gas control in protected coal seam, which is also a basic index to assess its protective effects. The calculation of remained gas content is based on moving law of pressure-relief gas in protected coal seam, it makes use of coal quality industry analysis value and gas adsorption experiment, combined with Langmuir formula. Finally, the calculation method of remained gas content can be obtained.