1, what are the main problems facing building safety?

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Answer: 1. There are some problems in the building safety management system, such as decentralized functions, functional transformation and backward technology and equipment.

2. The construction safety management environment is relatively bad, and the construction market is not standardized.

3. The safety management system of construction enterprises is not perfect, and the safety investment is seriously insufficient.

4, construction personnel safety training is not in place, the safety quality is low.

5, the supervisor can't seriously perform the duties of safety supervision and management.

2. On the advantages and disadvantages of shallow-buried excavation method.

(15)

Answer: Advantages: (1) Shallow-buried excavation method has strong compatibility with other construction methods.

(2) Flexible and changeable, with little influence on ground buildings, roads and underground pipelines, less land occupation for demolition, less interference to people and less pollution to urban environment.

Disadvantages: slow construction speed, more sprayed concrete dust, high labor intensity, low degree of mechanization, and difficult waterproofing of high water level stratum structure.