If a structure is built on piles over a large area of a abandoned paddy land; can methane accumilate underside and cause fires and distructoins?

If a concrete platform is built on piles over a abandoned paddy land of about 10 ha , is there any possibility of accumilating methane uderside of the stucture and cause destructions such as...

10 October 2019 1,424 3 View