Explosives explode, eventually.
Volatile Explosives
Using the spoilage system, Explosives eventually become Volatile Explosives which quickly become an explosion and explosions explode nearby explosives. You can put Volatile Explosives into an Assembler to defuse them, you get some stuff back and also stop those explosives from exploding.
Optional Hard Mode
If explosive explosives is too easy, which it probably is, you can enable hard mode in the mod's startup settings which makes Military Science volatile. You can't defuse a flask of Military Science, so don't make it unless you're absolutely going to do research with it.