9.6% CH4 me hi high explosion kyu hota hai? | Why mostly high explosion happens in mines in presence of methane about 9.6%?

ØHmm jante hai ki CH₄ ke 1 atom ko complete jalne ke liye oxygen ke 2 atom ki jarurat padtii hai or mines me jha par 9.6 % CH₄ hota hai to wha oxygen hawa ka panchwa hissa hota hai. Artharth-

(100-9.6)/5= 18.08% O₂  hotta hai.    

Iss tarah 9.6% ko jalne ke liye just iska double oxygen mojoood rahta hai, isliye wha high explosion hota hai.