Tunnel and underground engineering construction has the following characteristics:
Affected by engineering geological and hydrogeological conditions;
Poor working conditions, few and narrow working faces and poor working environment;
Underground excavation has little influence on the ground, but shallow burial may lead to ground settlement;
There are a lot of waste soil and gravel that need to be properly disposed of.
The construction method of tunnel and underground engineering is originally the method of mining roadway, so it is called mining method, which has a wide range of applications.
Legal basis: Nine Provisions on Tunnel Construction Safety
First, the license must be complete, and it is strictly forbidden to construct without qualification, subcontract, illegally subcontract and work without education and training.
Second, a special construction plan must be prepared according to the standard specifications and design requirements to ensure the implementation according to the plan. It is forbidden to change the construction method without authorization.
Three, we must strengthen the construction process and site management, to ensure that the support (prevention) in place, it is forbidden to support lag and safety.
Four, must implement the provisions of the hydrogeological exploration and prediction in advance, monitoring (exploration) measurement data exceeds the standard, immediately stop work and withdraw people. It is forbidden to take risks in construction work.
Five, to monitor toxic and harmful gases, strengthen ventilation management, it is forbidden to do construction work with excessive concentration.
Six, must strictly control the number of workers, tunneling faces should be mechanized, and it is forbidden to organize construction work.
Seven, must be set up in accordance with the provisions of the escape route, it is strictly prohibited in the case of safety facilities are not in place for construction work.
Eight, must be strictly in accordance with the provisions on the administration of explosives for civil use, illegal transportation, storage and use of explosives for civil use are strictly prohibited on the construction site.
Nine, must be formulated in accordance with the provisions of the emergency plan, equipped with rescue equipment, it is strictly prohibited to illegal command, adventure rescue after the accident.