If the tyre is a clincher it has a bead which holds it in place and an inner tube. Unless you have a "tubeless kit", the tire is most likely a tubeless tire.
In this case you are better off replacing the tire. You cannot afford the puncture at pressures above 100psi.
If you have flat tyre and stuck somewhere and have no option then I personally suggest you to take assistance from crossroads.Crossroads is a leading roadside assistance company which gives you on road vehicle breakdown recovery.They will assist you in 29 minutes, doesn't matter where you are.In case of flat tyre, Stepney change service will be provided by crossroads free of cost.