Taking No.3 coal seam of Duanshi coal mine of Qinhe Energy Group Co., Ltd. for example, the paper combined laboratory simulation and theoretical analysis to test gas desorption index of drill cuttings (△h_2) of coal samples with different weights under different adsorption equilibrium pressures.verified the relationship of gas adsorption equilibrium pressure and gas desorption index of drill cuttings (△h_2) which.had been obtained in the eights five-year plan. The paper also researched the law of relationsh...