Method for operating a combustion chamber

The method for operating a combustion chamber (1) having at least a mixing device (2) connected to a combustion device (3). The mixing device (2) has a first fuel feeding stage, to inject fuel (8, 12, 13, 16) into the mixing device (2) and mix it with an oxidiser (5) to then burn it in the combustion device (3). The combustion device (3) has a second fuel feeding stage to inject fuel (17) into the combustion device (3). The fuel (17) of the second stage is mixed with only an inert fluid (20) to form a mixture (21) that is then injected into the combustion chamber (1). The present invention also refers to a method for operating a gas turbine.