When working face has mechanizedsupport, air leakage quantity is small, velocity is low in goaf, and spontaneous combustion zone is more approach to working face.
有综采支架时，工作面向采空区的漏风量过小，致使采空区的速度很小，自燃带靠近工作面。
3
Permeability is a key factor to air leakage, its value and distribution influences greatly the distribution of air leakage. The mechanizedsupport influence air leakage from working face to gob.