The tunnel arch sprayed concrete I-beam to dismantle after?
No, I don't need it! I am a manufacturer of tunnel shotcrete and anchor support equipment. If necessary, give me a contact information! The price will be cheaper than that on the market!
The main supporting part of I-beam and shotcrete as initial support can not be removed
I-steel and arch initial support is not removed.But if the temporary arch by CD method or CRD method need to be removed.
