You people are the worst damn dambusters I have ever met.
First, you dont need to bust the dam, you just need to make the poor Egyptians flee into the desert. If they are afraid to come back within hours, the gambit worked. The Egyptian disaster infrastructure would be overwhelmed.
Once everyone is panicked and in an endless traffic jam, you cant just turn them around in short order. You just need to get the stampede started.
Second, you don’t break a shallow sloped dam like that with explosives.
I’ll share my childhood experience of getting melt water to flow down icy streets in the spring. A regular Canadian working in denial, as it were. This is childs play, you’ll see.
I was too small to chip the ice deep enough in places. So I had to change my tactics.
You dont attack the obstruction, you attack the water. Using bomb shaped shovels, you cause a series of waves to spill over the brim. You can cause a hell of a flood right there, and the populace downstream flees.
For me that softened the ice, and I could chip at it then. It would cause capillary action which would draw water through the ice weakening it.
In terms of a dam, its basically going to start melting, and each subsequent wave will shear layers off the top of the dam.
You can ramp it up with a resonant technique too.
At about age 10, I figured out that I could drag myself towards the front of the bath tub with my feet. The water and I changed places. Once there, I quickly pushed myself back, much quicker than the water liked to move. Once more to the front, and back again, and et voila, a 2 foot wave piled up the wall.
You can do that with bombs. Get some sloppy wave action happening, and then amplify it with timed bombings.