A fresh slide at the same site created difficulties for troops conducting search operations in low temperatures, intermittent snowfall and blizzards, the military said in a statement, without specifying the date of the new slide.
"The rescuers have commenced excavation at a new site, using plant equipment and infantry troops," it said.
"The search teams conducted a first level explosion to dig further into a hard mass of snow against the tunnel being attempted to access..."
Meanwhile, chief of military operations, Major General Ishfaque Nadeem told a press conference in Rawalpindi that specialist high altitude teams from Germany and Switzerland have reached the remote site.
"The six-member German and three-member Swiss teams have reached the avalanche site and are assisting Pakistani rescuers," he said, adding however, that the specialist team from the United States could not be deployed due to bad weather.
He said a Chinese team arrived in Islamabad Saturday morning while a Norwegian team is due on Sunday to join the rescuers.
Nadeem said that rescuers had successfully been able to reach ground level at three points but failed to find anybody trapped there, meaning they were trapped in other places of the battalion headquarters.
Search teams are looking for the trapped soldiers and civilians at six different points on the site, around 4,000 metres (13,000 feet) up in the mountains.
Troops were also attempting to dig a horizontal tunnel at the base of the main excavation site to reach what is thought to be one of the camp buildings.
More than 450 rescuers are working in sub-zero temperatures at the site, though experts have said there is virtually no chance of finding any survivors.