>>63815025
Israel started injecting liquid TNT. They drill holes at 650-foot intervals and use 12 tons of explosives per kilometer. Or also placing explosives alongside the interior of cleared tunnels. It takes around 15 metric tons of explosives per kilometer.

Which is more than Israel has so they've taken to using captured Hamas explosives like anti-tank mines strung along the tunnels.

>>63818349
The plan to pump water in them didn't work because the water just drained out of them. In one case, it took two weeks to fill a small tunnel with enough water to push Hamas fighters onto the surface. The concrete lining inside the tunnels is porous, some have drainage holes in them, and blast doors also complicate the process. And flooding doesn't destroy them.

Nobody has fought an enemy with tunnels as extensive as these before. There's an estimated 350-450 miles of tunnels and bunkers and 5,000 shafts across the Gaza Strip.

>>63815230
Pumping wet cement can block tunnels but I'm not sure how feasible it is when there are a lot of tunnels.

>>63816520
That too. You basically have to go in and clear them out and blow them up.