Who knows the subway about energy saving and environmental protection information?

1, such as in residential areas and other sensitive areas installed rubber and other shock-absorbing materials can reduce the noise generated by the vibration of the subway

2, as far as possible to use non-alkali materials, strict control (chloride ions, sodium ions) on the corrosion of steel and pollution of groundwater

3, as far as possible, do not use the injection of sodium silicate into the ground, the traditional process

4, should be vigorously promote the construction of shield machine

5, the building structure as far as possible to use polyvinyl chloride materials and low-smoke halogen-free flame-retardant materials

I can think of only these Oh also hope that the high people to add ~~