What Are the Conditions for a Methane Explosion

When methane levels exceed the upper explosion threshold or fall below the lower limit, the combustion is gentle due to a lack of either methane or oxygen. Within the explosion range, however, the methane-to-oxygen ratio is optimal for combustion, causing a fierce blaze.

If at this moment, the chemical reaction takes place in a restricted area and demands significant heat release, the resulting gases expand swiftly, culminating in an explosion.