From the Taiwan dictionary:
【坍塌】
注音 ㄊㄢ ㄊㄚ
崩壞倒塌。例建築工地的鷹架突然坍塌，工人死傷慘重。
Looks like a verb to me, at least in written Chinese, at least in this particular case.
【坍塌】
注音 ㄊㄢ ㄊㄚ
崩壞倒塌。例建築工地的鷹架突然坍塌，工人死傷慘重。
Looks like a verb to me, at least in written Chinese, at least in this particular case.