近几年，火灾尤其是重特大火灾事故的频繁发生，给公民人身、公共财产和公民财产造成惨重损失，给公共安全带来严重威胁。因此，预防“大火”的发生客观上更加成为消防工作的重中之重（这里的“大火”暂且定义为特大火灾事故）。而目前消防管理的某些做法仍不能适应现实的需要 In recent years, the frequent occurrence of fires, especially heavy fires, has caused heavy losses to citizens, public property and citizen property, posing a serious threat to public safety. Therefore, to prevent the occurrence of “big fire” objectively becomes the top priority of fire fighting work (“fire” here for the time being defined as a catastrophic fire accident). However, some of the current fire management practices still can not meet the real needs